Blunderzone vs Stockfish Chess Analysis
Price, ratings, monetisation and update history for both games, side by side โ with what reviewers say about each.
Blunderzone
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Turn your chess mistakes into focused practice with Blunderzone. Connect Lichess or Chess.com, review your games, and train the positions where you missed a better move. โข Game Tactics: puzzles from your own games. โข Quick Tactics: short sessions of 10 puzzles. โข Memory Training: revisit positions with spaced repetition. โข AI explanations: understand mistakes and better continuations in your account language. โข Track your progress, training streaks and game statistics. โข Optional reminders help you keep a training routine. Choose from 20 interface languages. Free, Basic and Premium plans offer different game import, analysis and AI explanation allowances. Paid memberships are optional; prices are shown in the app before purchase. โข 20 AI explanations / 100 AI explanations. One-time purchase. Credits never expire and are shared across your devices. One credit unlocks one new explanation. Privacy Policy: https://blunder.zone/privacy-policy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Stockfish Chess Analysis
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Play chess, analyse your positions, solve puzzles, and improve your skills, all in one app. SCG brings chess analysis, gameplay, daily puzzles, lessons, and position setup in a simple and focused experience. Whether you want to play a quick game, do analysis, or sharpen your tactics, SCG has you covered! Key Features: โ Chess Analysis: Analyse positions with engine evaluations and understand your games more deeply. โ Play Chess: Challenge the computer, play with a friend, or create a private room to play online. โ Difficulty Selection: Adjust the opponent's strength and choose a level that matches your skills. โ Custom Position Setup: Build any chess position on the board, then analyse it or start playing directly. โ Daily Puzzles: Solve daily challenges and puzzles to practise calculation and tactical thinking. โ Learn Chess: Follow interactive lessons on how the pieces move and understand the fundamentals. โ Hints & Undo: Get a hint when you need help or undo moves while practising and exploring. โ Board Customization: Personalize your experience with different board styles, piece sets, and more. โ 2D & 3D Boards: Play on a traditional 2D chessboard or switch to an immersive 3D board. โ Customizable Experience: Enable or disable music, sound, and haptics to match your preferences. Download SCG now and make every move an opportunity to improve! About Subscription: The free version of SCG offers limited access. A Pro subscription unlocks all features, customization, and full app experience. Privacy Policy: https://game-q.top/privacy-policy/ Terms of Use: https://game-q.top/terms-conditions/ Support: https://game-q.top/support/
Screenshots
Verdict
The clearest difference is ads: Blunderzone at none against Stockfish Chess Analysis's shown. Blunderzone also leads on update cadence (weekly vs every 2 weeks) and iOS requirement (15.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Blunderzone sells 4 in-app purchases, starting at $3.99 per month and Stockfish Chess Analysis sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Blunderzone ships an update weekly, Stockfish Chess Analysis every 2 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Blunderzone | Stockfish Chess Analysis |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly โ better | Every 2 weeks |
| Ads | No โ better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 15.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 187 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | RANKA s.r.o. | Nikita Bohara |
In-app purchases
Blunderzone
- Blunderzone Basic$3.991 Month
- Blunderzone Premium$6.991 Month
- 20 AI explanations$4.00
- 100 AI explanations$18.00
Stockfish Chess Analysis
- SCG Pro Weekly Subscription$3.997 Days
- SCG Pro Yearly Subscription7 Days trial$19.991 Year
- SCG Pro Lifetime GiftPlan$9.99
Questions
Is Blunderzone free?
Is Stockfish Chess Analysis free?
Do Blunderzone or Stockfish Chess Analysis have ads?
Which is updated more often, Blunderzone or Stockfish Chess Analysis?
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