HappyKey vs Truly Simple Flashcards

HappyKey provides you with a simple keyboard with many useful math symbols. It will fulfill all of your math notation needs with numbers, superscripts, pi, math operators and relations, infinity, and beyond. Install the app first, then to setup the keyboard go to Settings > General > Keyboard > Keyboards > Add New Keyboard > HappyKey Note: This is not a calculator. This is an additional keyboard that makes it easier to type math notation. Credit for the keyboard functionality and design goes to the open source Tasty Imitation Keyboard by Alexei Baboulevitch (GitHub user archagon).

Truly Simple Flashcards is a clean, no-subscription spaced-repetition app for iPhone, iPad, and Mac. Whether you're a student cramming for exams, a language learner building vocabulary, a professional studying for boards, or simply an Anki refugee looking for a modern alternative, this app does the core job exceptionally well and stops there. Make decks, add cards, and study. The app decides when to show each card again using FSRS, which is the same modern spaced-repetition algorithm power users trust. By asking you to grade how hard a card was to recall, the schedule adapts, ensuring you only spend time on the concepts you are about to forget. Bring in your existing decks from Anki or a spreadsheet, export your decks to use elsewhere, study seamlessly across all your Apple devices, and own your software forever. Features: • Smart scheduling: Uses the proven FSRS algorithm to adapt to your memory, with an adjustable "target retention" rate per deck. • Two card types: Create classic front-and-back cards, or use fill-in-the-blank (cloze) cards to memorize words in context. Images are fully supported on either side of the card. • Simple imports: Bring your existing decks with you. Easily import Anki files (.apkg / .colpkg, including the newest formats) or CSV/TSV spreadsheets. • Two-way study: Turn on two-way review to test your recall back-to-front, which is especially effective for learning vocabulary words. • Paced learning: Set a daily limit for new cards so a huge imported deck doesn't overwhelm your study session. • Flip-through mode: Review a deck casually without affecting your spaced-repetition schedule. • Reliable device sync: Your decks sync privately and securely through your own personal iCloud account across your Mac, iPad, and iPhone. • Genuinely accessible: Built natively for Apple devices with full VoiceOver support, Dynamic Type for comfortable reading, light/dark modes, and calm, minimal motion. • Pay once, keep forever: Use one deck for free with unlimited cards. Unlock unlimited decks with a one-time, lifetime in-app purchase. No subscriptions, no ads, no hidden fees.