Learn chess openings through structured lessons and custom group creation. Access a database to search or build personalized learning sets. Use spaced repetition to review openings based on memory retention or practice at your own pace.
by Up Quark Labs, LLC★ 4.339 ratingsEducationFreeData updated 2026-09-06
Play chess against another player or the computer with adjustable ELO ratings. Save, share, delete, and rename games in the Chess Gallery. Import and export PGN files. Analyze game statistics. Access interactive chess openings and skill guides.
Practice chess tactics by solving exercises from real games. Identify moves for attacking the king. Learn in 1 and 2 moves. Exercises are organized by piece and difficulty. Track progress through structured lessons.
Create and study for subjects like languages, medicine, and anatomy. Use spaced repetition to review material efficiently. Track progress and set study goals. Export for offline use. Sync across devices.
View real-time fishing run data including statistics, weather updates, and port information. Track openings and boat activity. Access data for Bristol Bay commercial fishing season. Requires yearly subscription for premium content.
Text through familiarization with selective letter and word removal, tap-to-reveal features, and speech-to-text playback. Reinforce retention with unscramble, fill-in-the-blank, and typing exercises. Track progress and review memorized content.
With interactive lessons covering 40+ real-life topics. Practice vocabulary with 6000+ essential words. Use smart repetition to reinforce memory. Listen, speak, read, and write through structured exercises.
Learn with interactive lessons and real-life dialogues
Learn through beginner-friendly lessons with clear explanations and real-life examples. Practice speaking with instant feedback. Access real-life dialogues and interactive exercises. Track progress and review vocabulary regularly.
Learn with intelligent that use spaced repetition to optimize review timing. Join an online community to practice with other learners. Track progress and prioritize high-impact cards to improve retention.
Learn Kanji by writing characters with on-screen input. Receive instant feedback on accuracy. Use spaced repetition system to review characters over time. Track progress and set learning goals. Sync data across devices.
Learn languages using spaced repetition and an AI tutor. Create personalized study plans, practice , and speak with an AI assistant. Focus on essential words for everyday communication. Track progress and review lessons regularly.
Solve chess combinations with structured, theme-based puzzles. Filter by difficulty and theme. Track progress and review solutions. Export puzzles for offline practice. Sync with cloud storage for cross-device access.
Learn with clinical dialogues based on real hospital cases. Practice terminology used in emergency care and daily rounds. Engage in interactive speaking scenarios to improve communication skills.
Create custom flashcard lists with text and images. Set reminders for review. Translate cards using 20+ languages. Shuffle cards to avoid memorization. Use spaced repetition for retention. Access pronunciation guides.
Learn through AI-generated stories in multiple languages. Practice with listening, pronunciation, and writing tests. Use spaced repetition to reinforce memory. Track progress with visual and interactive exercises.
Play against AI simulations based on Sergey style. Practice 120 exercises to improve tactics and strategy. Learn theory through structured lessons covering openings, middle game, and endgame.
Through daily lessons covering grammar, vocabulary, and speaking. Practice words with audio and translations. Use smart repetition to reinforce memory. Track progress with built-in exercises and quizzes.
Learn through spaced repetition using the SM2 algorithm to reinforce memory retention. Create with questions and answers. Review based on performance to optimize recall. Automatically backup data to iCloud for secure storage.