LearnClash vs QuizUp: Best QuizUp Alternative [2026]

100 million downloads. $55.6 million raised. Zero revenue model. QuizUp had everything except a future.

The best QuizUp alternative in 2026 is LearnClash: topic-based 1v1 quiz duels with an 8-tier ELO ranking system, 3-stage SRS built into every mode, and zero ads on any tier. QuizUp was the fastest-growing iOS game ever but shut down in March 2021. In January 2026 the original QuizUp team shipped a spiritual successor called Sway, and a separate unaffiliated app titled “QuizUp - The Game” appeared on iOS in 2025. None of them have what LearnClash has: skill-based ranking married to retrieval-practice memory.

This comparison covers what made QuizUp special, why it died, what the 2026 revivals actually deliver, and why LearnClash is the QuizUp alternative that treats every duel as a learning session. If you are searching for a quiz app like QuizUp or a true QuizUp replacement, this is the field guide.

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LearnClash vs QuizUp at a Glance

All three apps share the same core idea: pick a topic, answer questions, compete. LearnClash is the only one that adds 8-tier ELO ranking, 3-stage SRS, and difficulty scaling. QuizUp is gone. Sway is new. LearnClash is different by design.

Eight feature dimensions across the three apps. LearnClash fills the space QuizUp left empty.

Feature	LearnClash	QuizUp (2013-2021)	Sway (2026)
Status	Active (updated regularly)	Shut down March 2021	Active (launched Jan 27, 2026)
Team	Pluxia GmbH	Plain Vanilla → Glu Mobile	Rocky Road Inc (original QuizUp team)
Topics	Any topic you can imagine	1,200+ curated categories	Hundreds of curated topics
Questions	AI-generated, 3 difficulty levels	User-submitted, fixed pool	Curated, mixed difficulty
Duel format	18 questions across 6 topics	7 questions on 1 topic	Variable per tournament
Timing	Turn-based (48-hour window)	Real-time (simultaneous)	Real-time (live tournaments)
Ranking	ELO, 8 tiers (Iron to Phoenix)	Per-topic leaderboards	Per-city + per-topic leaderboards
Spaced repetition	3-stage SRS in every mode	None	None
Practice mode	9-question solo sessions with SRS	None	None documented
AI tutor	Clash (chat about any topic)	None	None
Ads	Zero on any tier	Free → ads added → users left	”Free forever, no pay-to-win”
Price	Free + Premium ($7.99/mo, $59.99/yr)	Free (later ads + IAPs)	Free (monetization TBD)
Platforms	iOS, Android	iOS, Android, Web (all defunct)	iOS, Android

What Happened to QuizUp?

QuizUp launched in November 2013 and hit 1 million users in eight days, making it the fastest-growing iOS game ever. LearnClash inherits that same energy for topic-based competition, with a sustainable foundation underneath it. The story of how QuizUp rose and fell in under eight years is a cautionary tale every quiz app should study.

QuizUp’s trajectory: fastest-growing iOS game to permanent shutdown in under eight years.

It started in Reykjavik. Thor Fridriksson, an Icelandic entrepreneur, sketched the idea on the back of an overdue electric bill during a dark Nordic winter. His company, Plain Vanilla Games, was broke. Their first game, a cartoon for toddlers called The Moogies, had flopped. So Fridriksson pitched Lionsgate on a Twilight fan trivia game. That branded quiz pulled in 2 million users and proved the concept: people wanted to compete on topics they cared about. With those numbers, he raised a $2.5 million Series A and built the general-purpose QuizUp we remember.

The November 2013 launch moment. 1 million users in 8 days. Fastest-growing iOS game ever. All from a Reykjavik studio that was one bill from bankruptcy six months earlier.

The growth was staggering. Within two weeks of launch, 1.5 million users had signed up and 70 million matches had been played. By May 2014, QuizUp had 20 million users. Users spent an average of 40 minutes per day in the app, rivaling Facebook mobile engagement. Investors from Sequoia Capital and Tencent poured in $55.6 million total.

• Nov 2013: Launch, 1M users in 8 days
• May 2014: 20M users, $55.6M raised, 40 min/day engagement
• May 2015: Social-network pivot, core trivia players pushed aside
• Aug 2016: NBC show canceled, 36 employees laid off
• Dec 2016: Sold to Glu Mobile for $7.5M
• Mar 2021: Servers shut down

But QuizUp never made money. Not really. In May 2015, the team pivoted QuizUp into a social network with profiles, messaging, and topic-based discussion forums. Core trivia players felt pushed aside. The pivot watered down the product. Then NBC signed a 10-episode TV show deal in September 2015, which was supposed to save everything. NBC canceled the show in August 2016 before it ever aired. All 36 employees were laid off. The Iceland office closed for good.

By peak valuation, Plain Vanilla had raised $55.6 million from Sequoia and Tencent. The company sold for $7.5 million. 87% value destruction in under four years.

Plain Vanilla sold QuizUp to mobile publisher Glu Mobile for $7.5 million in December 2016. Glu ran the app in maintenance mode for five years without real updates. When Glu added pushy ads and in-app purchases to squeeze cash, users left instead of paying. Electronic Arts acquired Glu in early 2021 and cleaned house. QuizUp was pulled from app stores on January 20, 2021. Servers went dark on March 24, 2021.

“We were so focused on growth that we forgot to build a business.” Thor Fridriksson, reflecting on QuizUp’s failure (PocketGamer, 2020)

Fridriksson has tried three more times since QuizUp. Trivia Royale (June 2020) hit 2.5 million downloads in three weeks and then shut down in June 2021 when Teatime Games ran out of money. Rocky Road (a hyperlocal mobile MMO) raised a $3M seed round in September 2023. And in January 2026 the same team shipped their most direct QuizUp successor yet, covered in the next section. The QuizUp formula clearly works. The business model is the hard part.

The 2025-2026 QuizUp Revivals: Sway and “QuizUp - The Game”

Two products revived the QuizUp concept in 2025-2026, and neither is the original. Sway is the official successor, built by Thor Fridriksson’s Rocky Road Inc and shipped January 27, 2026. “QuizUp - The Game” is an unaffiliated iOS and Android app that launched in 2025 using a name whose trademark Electronic Arts owns via its 2021 Glu Mobile acquisition. LearnClash sits alongside both as the QuizUp alternative that went a different direction entirely.

The 2026 QuizUp landscape: one official revival (Sway), one unaffiliated revival (QuizUp - The Game), and one app that built what QuizUp never had (LearnClash).

	Sway	QuizUp - The Game	LearnClash
Released	Jan 27, 2026	2025	2025 (active, updated regularly)
Team	Rocky Road Inc (original QuizUp creators)	Unaffiliated third party	Pluxia GmbH
Trademark	New brand (“Sway”)	Name matches EA-owned “QuizUp”	Independent brand
Format	Live daily tournaments + 1v1	Real-time duels (QuizUp-style)	Async 48-hour turn-based duels
Ranking	City + topic leaderboards, no ELO	No ranking system	8-tier ELO (Iron to Phoenix)
Learning	None	None	3-stage SRS
Ads	”Free forever, no pay-to-win”	Mixed reports	Zero ads, any tier

Sway picks up the real-time thread. Sway Live is a daily tournament where players compete against the world in real time, with creator-hosted game shows and real prizes. Topic breadth covers Taylor Swift, NBA, Harry Potter, Pokémon, Star Wars, Minecraft, world capitals, memes, and hip hop. Early reviews call it the most fun trivia app since QuizUp, though some users report question-quality inconsistencies and no report-error button.

When we tested Sway for 10 days in April 2026, the live-tournament loop felt fresh. Around five hosted tournaments run each day. What Sway rebuilds is the QuizUp energy: crowd, real-time stakes, per-round elimination. What Sway does not build is ranked skill progression or retention. Your wins are counted. They are not weighted by opponent skill. And nothing you miss comes back to be relearned.

April 2026 observation. Sway’s daily tournament window peaks at around 5 hosted runs per 24 hours. Miss the window and you wait. “QuizUp - The Game” has no tournament layer at all.

“QuizUp - The Game” is a different animal. The unaffiliated app on iOS and Android uses the exact brand name “QuizUp” in a market where Electronic Arts holds the trademark through its 2021 Glu Mobile acquisition. We installed it in April 2026 and found a format mimicking the 2013 QuizUp real-time duel loop but with a fraction of the content library and no ranking tiers. Whether it has a durable license or is simply operating in a gray zone, the UX does not reach QuizUp’s 2014 polish. So if you came here Googling “Sway vs QuizUp” or hunting a real QuizUp replacement, the short answer is: Sway rebuilds the format, “QuizUp - The Game” rents the name, and LearnClash builds what was missing underneath both.

Verdict: LearnClash for skill + memory. Sway for live nostalgia. Sway is the legitimate QuizUp successor by the same team, but it rebuilds QuizUp’s format, not its learning gaps. LearnClash built the ELO plus spaced-repetition engine QuizUp never had. See the full list of quiz apps compared for where the rest of the market sits.

Topics: Any Topic vs 1,200 Curated Categories

QuizUp’s topic library was its crown jewel. Over 1,200 categories covered everything from Harry Potter to advanced chemistry, each with its own fan community. LearnClash takes a different approach: type any topic and play right away, with questions at easy, medium, and hard difficulty. One is a curated library. The other is a search engine.

LearnClash generates questions on any topic you search. QuizUp’s 1,200-topic library was impressive but finite.

	LearnClash	QuizUp
Topic count	Unlimited (any topic)	1,200+ curated
Question source	AI-generated, validated	User-submitted
Difficulty levels	Easy, medium, hard (ELO-calibrated)	Single difficulty
Fresh content	Infinite, always new	Fixed pool, repeats
Quality control	Automated validation pipeline	Community moderation

QuizUp’s user-submitted questions had a charm to them. Fans wrote questions about their favorite shows and games with insider knowledge that only true fans would have. But quality varied wildly. When we compared question pools across 50 QuizUp topics before building our own system, some had hundreds of well-crafted questions. Others had a dozen poorly worded ones that repeated every few matches.

April 2026 benchmark. We pulled 50 random topics from QuizUp’s archived catalog and Sway’s live library, then asked LearnClash to generate three-difficulty questions for each. 50/50 shipped within 30 seconds. 0/50 were in “QuizUp - The Game.”

LearnClash generates questions on demand for any topic you type. Byzantine military tactics, 1990s one-hit wonders, Albanian folklore, the hash functions behind Bitcoin mining. None of it existed in QuizUp’s 1,200. Most of it is not in Sway either.

The trade-off is real, though: LearnClash does not have QuizUp’s per-topic fan communities. It focuses on the quiz itself.

Verdict: LearnClash for breadth and consistency. QuizUp’s curated library had deeper fan culture around individual topics, but that library is gone. LearnClash gives you infinite topics with reliable quality.

Competition: ELO Ranking vs Topic Leaderboards

QuizUp tracked wins on per-topic leaderboards. You could be #1 in Harry Potter and #847 in Geography, but there was no way to know your overall skill. LearnClash uses chess-style ELO rating across 8 tiers from Iron to Phoenix, where beating stronger opponents earns more rating points. Every duel in LearnClash is a ranked match with real stakes.

LearnClash tracks skill across 8 ranked tiers. QuizUp counted wins on flat leaderboards.

	LearnClash	QuizUp
Ranking type	ELO rating (global + per-topic)	Per-topic win/loss leaderboards
Tiers	8 (Iron, Bronze, Silver, Gold, Platinum, Emerald, Diamond, Phoenix)	None
Skill tracking	K-factor adjusts based on experience	Simple win count
Cross-topic skill	Yes (global ELO)	No
Progression feeling	Climb tiers, see rating change each duel	See position on leaderboard

New LearnClash players start at ELO 1300 (Gold II, the ladder average) with a K-factor of 40, meaning early matches produce big rating swings as calibration finds your true tier. After 10 duels, the K-factor drops to 20 for more stable progression. You can see exactly how each duel shifts your rating.

April 2026 data. Balanced LearnClash duels (opponents within ±80 ELO) produced win splits close to the 45-55% target. Unmatched pairings produced 30-70% swings, exactly as the math predicts.

QuizUp leaderboards were fun to check, but they rewarded volume over skill. Play 500 games on a topic and you would rank high regardless of win rate. LearnClash’s ELO rewards consistency. A player who wins 70% of their matches at Gold tier is genuinely better than someone who grinds 1,000 games at Bronze. Neither Sway nor “QuizUp - The Game” built ELO either. Sway uses city leaderboards and per-topic ranks. The unaffiliated revival has no ranking at all. LearnClash remains the only ranked alternative. See how the ELO rating system works for the K-factor math and the LearnClash statistics page for the current tier distribution.

🌍 Test your geography ELO

Verdict: LearnClash. QuizUp had leaderboards. Sway has leaderboards. Only LearnClash has a real ranking system.

Learning: Spaced Repetition vs Play-and-Forget

QuizUp had zero learning features. You answered questions, saw if you got them right, and moved on. Nothing tracked what you knew or did not know. Nothing scheduled review. LearnClash builds a 3-stage SRS system into every game mode, so questions you miss come back at timed intervals until you have mastered them. Sway and “QuizUp - The Game” inherit QuizUp’s gap: neither tracks retention. Every LearnClash duel is also a study session.

LearnClash SRS keeps retention high over weeks and months. QuizUp (and its 2026 revivals) have no retention system.

	LearnClash	QuizUp	Sway (2026)
Spaced repetition	3-stage SRS in every mode	None	None
Practice mode	9-question solo sessions, offline	None	None documented
Mastery tracking	3 stages (wrong → 7-day known → 90-day mastered)	None	None
Knowledge retention	Compounds over weeks and months	Resets every game	Resets every tournament
AI tutor	Clash (chat about any question/topic)	None	None

This is the biggest gap. QuizUp was fun. Sway rebuilds that fun. LearnClash is learning dressed up as fun.

How 3-stage SRS works. Wrong answer today → 7-day review. Correct at 7 days → 90-day review. Correct at 90 days → mastered, exits pool. Miss at any stage → back one step. Simple, ruthless, cumulative.

Think about it this way. You miss a question about the Treaty of Westphalia in a LearnClash duel. In QuizUp, that question vanished forever. In LearnClash, it enters the 3-stage SRS cycle and will reappear until you own it. In LearnClash data, 72% of review questions pass the 7-day known check and 81% pass the 90-day mastered check. See the live retention numbers for the full tier-by-tier breakdown.

The testing effect is one of the most replicated findings in memory science. Pulling facts from memory makes them stick far better than rereading. LearnClash’s SRS is built on this research. QuizUp, Sway, and “QuizUp - The Game” never tried. For the full science, read how spaced repetition actually works and how to study effectively using retrieval practice.

Cepeda et al. (2006) found that spaced practice produced retention rates 10-30% higher than massed practice across all reviewed studies. A 2024 systematic review on practicing physicians replicated the effect across professional learning contexts.

And that changes everything.

Practice mode gives you 9 focused questions on any topic, playable offline. It is pure SRS: the questions you struggle with appear more often. Premium unlocks unlimited practice sessions. Free players get one per day, which is still more structured learning than QuizUp, Sway, or the unaffiliated revival offer.

Verdict: LearnClash. Not close. QuizUp was play-and-forget. Sway is play-and-forget with better prizes. LearnClash is play-and-remember. Read more about the testing effect and how retrieval practice works or the broader case for competitive learning.

Multiplayer: Turn-Based vs Real-Time

QuizUp matched players in real time. Both answered the same questions at once with a countdown timer. The rush of competing live against a stranger on the other side of the planet was a huge part of QuizUp’s appeal. Sway revived that exact loop in 2026, including a daily live-tournament layer with creator hosts. LearnClash took the opposite road: async turn-based duels with a 48-hour window per turn. Different formats, different strengths.

LearnClash: play on your schedule across 6 topics. QuizUp (and Sway): both players race at once.

	LearnClash	QuizUp	Sway (2026)
Format	Turn-based (async)	Real-time (at once)	Real-time (tournaments)
Time per turn	48-hour window	Instant (both play live)	Tournament-paced
Players per match	2 (1v1)	2 (1v1)	Up to hundreds per tournament
Questions per duel	18 (6 topics, 3 each)	7 (1 topic)	Variable per round
Topic selection	Player picks; algorithm ensures 6 diverse topics	Player picks 1 topic	Host picks tournament theme

QuizUp’s real-time model was exciting in the moment. Both players racing through the same questions, watching each other’s answers pop up. That adrenaline hit is hard to match in async play. Sway Live rebuilds exactly that energy with hosted tournaments and real prizes.

But real-time has costs. You need both players online at the same time. Finding an opponent can mean waiting. Disconnects kill matches. And because questions are live, speed often matters more than knowledge. Players who memorize the question pool can tap answers before reading the full text.

The tradeoff in one line. Real-time rewards reflexes. Turn-based rewards range.

LearnClash’s turn-based format means you play when it suits you. Morning commute, lunch break, before bed. Your opponent plays on their schedule. No waiting, no disconnects, no speed-tapping edge. The 48-hour window gives everyone time to think. And because duels span six topics with three questions each, winning takes range, not just one specialty. So which is better? Honest answer: it depends on what you want.

Verdict: different jobs. Sway wins for live thrill and tournament pageantry. LearnClash wins for pace, depth, and skill building. If you loved QuizUp’s instant matches and just want that feeling back, Sway is the closer match. If you want your wins to mean something and your knowledge to stick, LearnClash’s pacing is the feature.

Pricing and Ads: The Lesson QuizUp Taught Everyone

QuizUp’s death is a warning to every quiz app. Ads kill engagement. The original QuizUp was completely free with no ads. Users loved it because it did not interrupt the experience. When Glu Mobile added pushy ads and in-app purchases, users walked away. Sway studied that lesson too, and promises “free forever, no pay-to-win” on its marketing page. LearnClash went a different direction: subscription for more features, zero ads for everyone.

LearnClash charges for more features, not fewer interruptions. QuizUp’s ad-based monetization drove users away. Sway’s monetization path is still being written.

	LearnClash	QuizUp (at shutdown)	Sway (2026)
Ads (free tier)	Zero	Unskippable video ads between matches	None announced
Ads (paid tier)	Zero	Ad removal was a paid feature	No paid tier yet
Subscription	$7.99/mo or $59.99/yr (7-day free trial)	None (ads + IAPs only)	None announced
Free tier includes	Unlimited duels, all topics, ELO, daily SRS	Base game with ads	All tournaments, city play
Pay-to-win	No	Power-ups available for purchase	”No pay-to-win” (stated)

QuizUp’s users were not cheap. They loved the app. They played 40 minutes a day. But when Glu tried to monetize that engagement through ads and pay-to-win mechanics, the very thing that made users loyal (an uninterrupted quiz experience) was the first thing to go. Users did not pay to remove ads. They uninstalled.

The rule QuizUp proved. Quiz app users hate ads enough to quit. No amount of 40-minute engagement saves you once the ads arrive.

Sway is betting it can stay free forever. That is a brave promise from a team that already watched one quiz app die under the weight of its own servers. The unaffiliated “QuizUp - The Game” has no clear monetization statement at all. LearnClash took the opposite approach from Glu: zero ads on any tier, full stop. Not on the free plan. Not hidden behind a paywall. The free tier includes unlimited duels, all topics, 8-tier ELO rankings, and one daily practice session. Premium ($7.99/month or $59.99/year with a 7-day free trial) adds unlimited practice, advanced stats, extra streak freezes, and exclusive cosmetic rewards. The model is simple: subscriptions, not ads. Premium users pay for more features, not fewer breaks. That is the gap between building value and charging to remove pain.

Verdict: LearnClash. QuizUp proved that quiz app users hate ads enough to quit. Sway’s “free forever” has yet to survive its first server bill. LearnClash is the only major QuizUp alternative with zero ads in any tier and a stated subscription model. See the full list of quiz apps compared or check the LearnClash pricing page.

What QuizUp Never Built: ELO + Spaced Repetition

Here is the opinionated take, and it shapes every LearnClash design decision. QuizUp died because it had no retention engine. 100 million downloads with nothing to bring users back once they had mastered their favorite topic. Sway is rebuilding the front door. LearnClash built the back door QuizUp never had: skill-ranked matchmaking plus spaced repetition.

The engine QuizUp never built. Without ELO and SRS, every topic mastered was a user lost.

What the retention engine needs	QuizUp	Sway	LearnClash
Skill-weighted matchmaking	Per-topic win counts	Per-city + topic leaderboards	8-tier ELO, K-factor adjusted
Forgetting-curve review loop	None	None	3-stage SRS (7d, 90d intervals)
Re-engagement trigger	Push notifications only	Daily tournament hook	SRS review + quest streaks
Progression ceiling	None (hit #1 once, done)	Tournament leaderboard refresh	ELO tier climb + mastery pool
Learning compounding	Zero	Zero	Retention stacks over months

Think about what QuizUp’s 40-minute daily sessions actually produced. A player mastered their topic in month one. Then they hit the top of their per-topic leaderboard. Then what? The app had no way to say “here is a harder opponent” or “here is the 7-day review from your weak spots.” The engagement flywheel ran out of spokes.

The two parts of LearnClash’s answer. ELO makes every duel matter (beating up earns more than beating down). 3-stage SRS makes every question matter (miss it, it returns until you own it).

LearnClash’s ELO matches a Silver player against Gold upward; beating Gold earns more rating points than beating another Silver. A Phoenix-tier player cannot grind easy wins because the system matches them upward. The 3-stage SRS cycle brings yesterday’s misses back in 7 days and passes them to 90-day review on success. You can see the system working in your weekly stats view. Sway might build this eventually. “QuizUp - The Game” almost certainly will not. Until one of them does, LearnClash is the QuizUp alternative where the game keeps getting harder because you keep getting better.

Verdict: LearnClash, structurally. QuizUp is a cautionary tale in product-market fit without a retention engine. LearnClash is what happens when you ship that engine first.

Who Should Download LearnClash

The seven-point match profile for LearnClash.

Download LearnClash if:

• You miss QuizUp’s topic-based duels and want that format back
• You want a ranking system that tracks real skill, not just win counts
• You care about retaining knowledge, not just having fun for five minutes
• You want zero ads without paying to remove them
• You liked QuizUp’s breadth but want better question quality and infinite topics
• You want an app that is actively developed, not abandoned in maintenance mode
• You want to play on your schedule with 48-hour turns

Who Might Prefer Sway or the QuizUp Revival Instead

The short-list profile for Sway over LearnClash. Different job, different app.

Be honest: Sway delivers some things LearnClash does not, and that is by design.

• You miss real-time simultaneous play with both players racing through questions at the same moment. Sway Live rebuilds exactly that feeling. LearnClash’s async format is a different experience.
• You want tournament pageantry with a live host and real prizes. Sway’s daily tournaments are the direct descendant of QuizUp’s old topic leaderboards. LearnClash has no tournament layer.
• You valued topic-specific fan communities and hand-curated questions written by enthusiasts. Sway’s curated library and city-based social ties are closer to that than LearnClash’s any-topic AI approach.
• You want the QuizUp brand nostalgia, literally. “QuizUp - The Game” keeps the name on the icon, if that matters more than the features underneath.

The original QuizUp is not coming back. Electronic Arts owns the trademark; the 2013-2021 server-side content is offline. But the demand QuizUp proved, 100 million downloads of topic-based quiz duels, is clearly still real. Sway is rebuilding the format. LearnClash is building what the format was missing.

The Bottom Line

LearnClash is the QuizUp alternative that built the retention engine QuizUp never shipped. QuizUp proved that 100 million people want to compete on topics they care about. Sway rebuilt the live-tournament format for that audience in January 2026. “QuizUp - The Game” borrowed the name. Neither solves the problem QuizUp could not solve: once you have mastered a topic, why come back tomorrow?

The short-version pick. LearnClash for skill + memory. Sway for live nostalgia.

LearnClash answers that with ELO ranking, 3-stage SRS, any-topic AI, and a zero-ads model that does not wreck the experience to pay for servers. Each round takes three minutes. If you are comparing further, read LearnClash vs Trivia Crack or the current state of LearnClash in data. The short version: LearnClash is the QuizUp alternative that actually learns from history.

⚡ Start your first duel