Blundr vs 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.

Chess-Buddy is a chess game where your computer opponent also talks with you using a powerful local LLM, Qwen 3 trained at 1.7 Billion parameters. This Chat system has been wrapped and designed to conform to this game giving a dynamic personality to the gameplay that feels alive and rich with a friendly buddy to play with. I like playing chess on my phone but I really like playing with a person. This isn't quite as nice as playing casual chess with a friend but it's pretty nice. Play chess against a real engine (the chess side of the AI is running on stockfish, the leading open source chess engine that everyone agrees is really great, with also selectable difficulty levels). After almost every move, Buddy reacts — with a short line, a funny face might happen, and occasionally a little shade. You can chat freely between moves too. Buddy will respond. It's less like playing against a computer and more like playing against a friend who happens to be very good at chess but awkward at conversation, Not to say it is a bad chat LLM it's just not set up to work like a personal assistant anymore, the conversation is with a LLM that is essentially now Chess-Buddy. Everything runs on your phone. No internet required. No account. No ads. No subscription. The chess engine and Buddy's brain are built in. --- CHESS • Full rules: all legal moves, castling, en passant, pawn promotion with a piece picker • Four difficulty levels — Friendly (800), Casual (1200), Competitive (1600), Expert (2200) • Undo moves and reset anytime • Game saves automatically — pick up exactly where you left off BUDDY • Reacts to the game with short, personality-driven commentary • 11 animated face states — Buddy goes mindblown when something wild happens • Chat freely: ask for help, vent about your last move, just hang out • Runs entirely on-device with a local AI model — no data leaves your phone DESIGN • Bright, friendly, cartoon — not a dark chess robot • Tap or drag pieces, whichever feels natural • Haptic feedback for captures, check, and checkmate • One screen. No menus to get lost in. ChessBuddy is made by Adrondak LLC. Chess engine: Stockfish (GPL v3) — stockfishchess.org Personality model: Qwen3-1.7B (Apache 2.0) — Qwen Team / Alibaba Cloud Inference runtime: llama.cpp (MIT) — Georgi Gerganov