Khan Academy KidsKhan Academy Kids is a free, ad-free educational app for children ages 2–8 covering reading, math, writing, and social-emotional learning with thousands of interactive activities.(0)Research & Education·Online Learning Platforms·Study Assistants0
Speakable AISpeakable helps K-12 ELL and World Language teachers assign AI-scored speaking and writing practice in 100+ languages, with instant feedback, student portfolios, and proficiency benchmarks.(0)Audio & Voice Tools·Online Learning Platforms·Study Assistants0
World Stamps Catalog AppWorld Stamps Collecting is a free philately app with a comprehensive world stamp catalog powered by colnect.com. Filter by country, year, series, and more.(0)Productivity·Research & Education·Knowledge Management Tools0
Tycho TrackerDetect faint and fast-moving asteroids with Tycho Tracker. Uses Synthetic Tracking, GPU acceleration, and the Gaia EDR3 catalog for precision astrometry under 0.5 arcseconds.(0)Data & Analytics·Research & Education·AI Research Tools0
TonestroLearn saxophone, trumpet, flute, clarinet, violin, and more with Tonestro. Get live AI feedback on pitch and rhythm, video lessons, and sheet music — all in one app.(0)Audio & Voice Tools·Online Learning Platforms·Study Assistants0
TenzonePlay Tenzone, the free number puzzle game where you drag cookies to sum 10, chain combos, and compete on global leaderboards. Available on iPhone, iPad, and Mac.(0)Productivity·Research & Education0
NotevisionNotevision helps musicians master sight reading, music theory, chords, and rhythm through adaptive interactive exercises on iPhone, iPad, and Mac.(0)Online Learning Platforms·Study Assistants0
Music Tutor (Sight-reading)Practice and improve your music sight-reading skills with Music Tutor. Supports treble, bass, and alto clefs, MIDI instruments, and Apple Watch.(0)Online Learning Platforms·Study Assistants0
DSO PlannerDSO Planner is the most powerful astronomy observation planning app for Android, featuring 113 million stars, massive DSO databases, telescope integration, and a night-mode UI for field use.(0)Productivity·Research & Education0
WebMathWebMath is a teacher-designed, standards-aligned math app for kids ages 4–11. Features personalized practice, interactive games, and adaptive learning for kindergarten through 5th grade.(0)Research & Education·Online Learning Platforms·Study Assistants0
