Repeatedly vs Proof Fidget

Master Any Subject with Science-Backed Spaced Repetition Repeatedly transforms how you learn and retain knowledge. Create flashcards with your favorite AI tools, then import the markdown files for scientifically-optimized spaced repetition learning. Beyond Simple Flashcards * Rich context cards with examples, explanations, and detailed information * See the full picture after your initial recall attempt * Build interconnected knowledge, not isolated facts * Perfect for complex subjects like programming, sciences, and professional development Simple AI-Powered Workflow * Create flashcards with ChatGPT, Claude, Gemini, or any AI tool * Ask AI to generate markdown flashcard files from articles, books, notes * Import the markdown files directly into Repeatedly * Start studying with proven spaced repetition immediately * Note: Requires your own AI subscriptions - no AI included Your Data, Your Control * Standard markdown format - no vendor lock-in * Edit cards in any text editor (VS Code, Obsidian, Notes) * Future-proof your learning investment * Version control with Git, process with scripts * Readable decades from now, long after apps disappear Intelligent Features * Scientifically-proven Leitner system spacing (1, 2, 4, 7, 15 day intervals) * iCloud sync across all your devices * Organize with nested decks for any subject * Import text and markdown files with frontmatter Perfect For: * Students mastering complex subjects * Developers learning new technologies * Professionals staying current in their field * Anyone building a personal knowledge base Create cards with AI, study with science. Own your knowledge forever.

ProofFidget is a puzzle-driven way to learn the feel of doing math: not by memorizing procedures, but by making correct moves, one step at a time, until a proof truly holds together. Each puzzle gives you a clear goal and a partially-complete derivation. You spin the wheel to choose your next move, then commit to a step and watch the proof line up. If you’re right, you progress; if you’re wrong, you learn quickly why it didn’t fit. The result is a tight feedback loop that makes abstract ideas concrete and surprisingly fun. You’ll work across a growing set of subjects, including: Logic and proof techniques: build confidence with implication, contradiction, and structured reasoning. Algebra: make valid transformations while keeping equations balanced, supported by visual “balance scale” diagrams. Number theory: practice modular arithmetic, divisibility, and gcd-style reasoning with intuitive visuals. Geometry and beyond: use diagrams to ground symbolic steps in something you can see. ProofFidget is designed for short, satisfying sessions, but it also rewards deeper play: you start noticing patterns, choosing steps for the right reasons, and developing proof instincts that transfer to real coursework and problem-solving. If you’ve ever thought “I understand the formula, but I don’t understand why,” ProofFidget is built for that moment.