Independent apps that work offline and never ask you to sign up. No accounts, no tracking, no ads.
CalcRef puts 100+ calculus formulas, 6 reference tables, flashcard quizzes, and a unit converter in one free offline app for AP and college students.
Discretica is a discrete math app for CS students: truth table builder, proof trainer, 7 calculators, and 500+ guided practice problems — fully offline.
Convert HEIC to JPG, PNG & WebP on your iPhone with ConvertPix — a free, 100% offline image converter that batch converts, resizes, and compresses photos.
Fahm is a privacy-first iOS app for learning Modern Standard Arabic offline: 1,000+ words with tashkeel, 38 grammar lessons, spaced repetition. No ads ever.
Hafiza is a privacy-first iOS app to learn Turkish offline: 1,000+ words, 105 lessons, 30 grammar guides and spaced repetition. No ads, no tracking.
Learn Urdu the way it is spoken at home. BolNama pairs Nastaliq script, Roman Urdu guides and native Pakistani audio with spaced repetition. Free to start.
Octet puts 80+ organic chemistry reactions, step-by-step mechanisms, 25 functional groups, 60+ reagents, and pKa, IR & NMR tables in your pocket. Free on iOS.
Free iOS periodic table app with IUPAC and NIST verified data for all 118 elements, molar mass calculator, equation balancer, quizzes, and offline access.
PhysRef puts hundreds of physics formulas, built-in calculators, physical constants, and a 14-category unit converter on your iPhone — fully offline and free.
ClearLung helps you quit smoking with CBT lessons, mindfulness exercises, an SOS craving button, and progress tracking — 100% private, on-device, ad-free.