Cool To Do vs Deep Charger

This is a simple, no-frills to-do application. Please use it for your shopping list or to-do list for the day.

Deep Charger is a private AI assistant that runs entirely on your device. No internet connection, no account, and no data ever leaves your iPhone. Ask a question and watch it think. Deep Charger works through problems step by step, showing its full reasoning with clean, beautifully rendered math. WHAT IT'S GREAT AT • Math & word problems — algebra, percentages, probability, arithmetic, solved step by step • Logic and reasoning puzzles • Small coding tasks and clear explanations • Rendered equations — fractions, exponents and more, shown properly • Follow-up questions — it remembers the conversation, so you can dig deeper 100% ON-DEVICE & PRIVATE • Runs a compact reasoning AI model locally on Apple Silicon • Works fully offline — try it in Airplane Mode • No sign-up, no tracking, no cloud • Your conversations stay on your phone BUILT FOR APPLE SILICON Deep Charger uses an optimized on-device engine (MLX / Metal) to run a real language model right on your iPhone — fast and battery-aware. GOOD TO KNOW Deep Charger is a compact reasoning model focused on math, logic and step-by-step thinking — not a web search engine or encyclopedia. It shines at problem-solving and reasoning; for the latest facts or live data, use a connected tool. Private. Offline. Always in your pocket.