Blundr vs Serene Chess

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 (≈400 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.

Serene Chess is a calm space for deep play: a strong engine, four thousand tactics puzzles, and a review that shows you where the game actually turned. Everything works offline, with no account, no ads, and no data collected. PLAY • A tunable opponent, from a gentle club player to full strength • Three playing styles: Defender, Balanced, Aggressor • Hints, takebacks, draw offers, resignation, and PGN sharing • Your opening named as you play it, from the standard ECO tables PUZZLES • 4,000 tactics puzzles bundled in the app and playable anywhere • Four difficulty bands, from Gentle to Severe • Choose the idea you want to practise: forks, pins, skewers, deflection, back-rank mates, endgames • A new puzzle every day, with streaks and honest progress REVIEW • The engine walks back through your finished game, move by move • Accuracy for both sides, and the moments that decided the result • See what the engine would have played instead • Tap any moment to jump straight to that position on the board QUIET BY DESIGN Soft wood tones, an evaluation bar you can switch off, gentle haptics, and a dark mode that stays dark. Nothing flashes, nothing nags, nothing is sold to you. Stockfish runs entirely on your device. No account, no network, no analytics: your games never leave your phone.