Comparison

Chessight vs Blundr

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Chessight

Features
Read full description

Chessight is the fastest way to analyze, review, and learn from your chess games — all on your iPhone. Import your own games or analyze chess.com matches from any username. A full Stockfish 18 engine runs locally on your device to classify every move as brilliant, great, best, inaccuracy, mistake, or blunder — exactly like the big chess sites, but without an account or monthly subscription. WHAT YOU CAN DO • Analyze any PGN — paste a game or import via share sheet • Pull chess.com games by username with one tap • See move-by-move accuracy, classifications, and eval graph • Tap any move for a detailed breakdown with best alternatives • Explore variations freely — play "what if" lines and get instant evaluation • Share positions with a single tap PLAY & TRAIN • Play against Stockfish at adjustable depth (1–20) • Solve the daily chess.com puzzle • Browse 37+ famous checkmate patterns • Edit any position with a flexible board editor PRIVACY FIRST • The Stockfish engine runs entirely on your device — your games never leave your phone • No account required • Chess.com game data fetched through their public API FREE OR PREMIUM • One free deep analysis every day • Watch a short ad to unlock additional analyses • Or buy Premium once — unlimited analyses, no ads, forever • Premium is Family Shareable WHAT'S INCLUDED • Stockfish 18 with NNUE neural evaluation • Interactive board with legal-move highlighting • Opening book detection • Accuracy stats across games • iPad-optimized two-column layout • Works on iPhone and iPad (portrait and landscape) Download Chessight today and start analyzing every move you make.

About

Blundr

Features
Read full description

Blundr is the chess training app built around YOUR weaknesses. Play, learn, and improve with an AI coach that watches every move and tells you what you missed — grounded in real Stockfish analysis, not vibes. WHAT'S INSIDE • Play vs AI bots tuned from beginner-friendly (ā‰ˆ400 ELO) all the way up to grandmaster strength. • Ranked play against real opponents with ELO-based matchmaking after a 5-game calibration window. • Friends — search by username, send game challenges, see who's online. • In-game chat (consent-gated, with one-tap reporting). • Tactics — hundreds of curated puzzles by theme and difficulty, with retry support. • Practice drills — middlegame plans, endgame technique, opening continuations. Free for everyone. • Opening explorer — full move-by-move PGN replay for the most-played lines. • Post-game AI review — engine analysis, blunder detection, and an annotated game story (3 free per month). BLUNDR PRO For serious improvers, Pro unlocks: • Unlimited AI Coach chat with grounded game context. • Unlimited post-game AI reviews and engine analysis. • Live coaching after every practice drill and opening line — your AI coach narrates every move you make against the engine. • Climb — a personalised training roadmap that targets your weaknesses with daily tactics, opening drills, and ladder game goals. • Date Mode — discover compatible chess players, send invitations, play move-by-move date games. Pro is purchased on the web at blundr.co/pricing and powers your account across both web and iOS. Cancel any time. WHY BLUNDR Most chess apps drown you in courses. Blundr does the opposite — it watches you play, finds the patterns where you lose ELO, and feeds you exactly the position-shapes you need to drill. The AI coach is grounded in your actual games, not a generic curriculum. GROWN-UP MODERATION Chat is opt-in and consent-gated. Every chat surface has a Report button that goes straight to a human moderation queue. Repeat offenders get muted or removed. QUESTIONS / FEEDBACK We read every email at support@blundr.co. Pull-to-refresh on the dashboard is the fastest way to recover from a flaky connection. Terms of Use (EULA): https://www.blundr.co/terms Privacy Policy: https://www.blundr.co/privacy Subscriptions: - Blundr Pro Monthly — auto-renewing monthly subscription - Blundr Pro Annual — auto-renewing annual subscription Payment will be charged to your Apple Account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Subscriptions may be managed and auto-renewal turned off in your Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. — Built for serious improvers.

Screenshots

Chessight4 screens
Blundr4 screens

Verdict

The call

The clearest difference is ads: Blundr at none against Chessight's shown. Blundr also leads on update cadence (every 4 days vs every 9 days). Chessight's advantage is iOS requirement (13.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Chessight sells 1 one-off in-app purchase and Blundr sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Chessight ships an update every 9 days, Blundr every 4 days. The most recent releases landed on September 13, 2026 and September 17, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Chessight versus Blundr: the parameters behind the verdict, then further details
ParameterChessightBlundr
PriceFreeFree
Update frequencyEvery 9 daysEvery 4 days — better
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS13.0 — better15.1
Further details — not scored
Size186 MB32 MB
Age rating4+17+
DeveloperJayanth S PChristopher Macier

In-app purchases

1 purchases

Chessight

One-time1
  • Chessight Premium$4.99
2 purchases

Blundr

Subscriptions2
  • Blundr Pro$12.991 Month
  • Blundr Pro$104.991 Year

Questions

Is Chessight free?
Chessight is free to download, with in-app purchases available.
Is Blundr free?
Blundr is free to download, with in-app purchases available.
Do Chessight or Blundr have ads?
Chessight shows ads; Blundr does not.
Which is updated more often, Chessight or Blundr?
Chessight ships an update every 9 days, and Blundr every 4 days. Most recently, Chessight was updated on September 13, 2026 and Blundr on September 17, 2026.

Other comparisons