Two apps in one: a multi-purpose Android calculator with 16+ specialized modes plus a simple Tasks to-do list with per-task stopwatches - in a retro 7-segment LCD theme with dark/light support and home-screen widgets.
Platform: Android
Get it on Google Play: https://play.google.com/store/apps/details?id=io.github.omniverse_lab.mathdeck
What's included
Calculator - 16+ modes:
Core: Basic, Scientific, Date & Time
Domain: Accounting, Civil, Electrical, Physics, Business
Visualization: Graph Plotter, 3D Shapes, Math & Stats
Lifestyle: Health & Fitness, Unit Conversion, Currency Converter
Tasks (To-Do) - a simple to-do list with a built-in per-task stopwatch, organized by Today / Yesterday / Tomorrow / Archive. Switch between Calculator and Tasks anytime.
Home-screen widgets - calculator shortcuts and a today's-tasks widget with quick-add.
All data stays on your device. No sign-up, no ads, no tracking.