Competition-Grade Speedcubing & Rubik's Cube Stackmat Timer
Built with Flutter • Offline-First • Multi-Touch Telemetry • Dual Stateful Leaderboards
Tempest is a modern, high-precision speedcubing timer designed for cubers who demand authentic competition-feel practice. Featuring hardware-grade Stackmat two-hand multi-touch timing with cancellation mechanics, multi-user tracking, dynamic event profiles, dual stateful leaderboards, and celebratory animations, Tempest brings a sleek, distraction-free experience to speedsolving.
-
Two-Hand Stackmat Emulation: Touch both pads on touchscreen devices, or hold
[Z](Left Hand) +[M](Right Hand) on desktop & web. -
Arming States: Hold for
$\ge 300\text{ms}$ (Amber holding$\rightarrow$ Pistachio green ready). - Instant Start: Monotonic millisecond-precision timer starts precisely when both hands leave the screen or keys are released simultaneously.
- Cancel Start: Lift one hand while keeping the other down to cancel the start without triggering a false clock.
-
Instant Stop: Tap anywhere on screen or slap any key (
[Z],[M],[Space]) to lock your solve time immediately. -
Spacebar Quick Mode: Hold
[Space]to arm both hands simultaneously on desktop. -
Instant Scramble Refresh: Press
[R]to generate a new scramble sequence on the fly. -
Distraction-Free Fullscreen Mode: Dedicated fullscreen toggle (
[F]key or button) displaying only the high-contrast digits and Left/Right handpads (exit via[Esc]).
- Top Avatar Bar: Switch between cubists with a single tap.
- Manage Users Dialog: Add, rename, switch, and remove profiles directly from the home screen.
- Pre-configured WCA events: 3x3x3, 2x2x2, 4x4x4, 5x5x5, and Pyraminx.
- Dynamic Profile Creator: Add custom categories and non-standard puzzles with dedicated tracking.
- Profile Leaderboard (Global): Ranks all local users by their single best time on the active puzzle, with Gold 🥇, Silver 🥈, and Bronze 🥉 podium badges. Supports toggling between Best Order (Default) and Chronological Order.
- User History (Local): Complete solve log with timestamps, penalties (
+2,DNF), and solve deletion. - Slide-out Summary: Automatically slides in after every solve with your new rank and record highlighted.
- Personal Best (PB): Confetti particle explosion and celebration banner.
- Profile Record: Flying golden trophies 🏆 emerging upwards from the bottom of the screen.
- Theme Palette: Dark Navy (
#0A1128) & Pistachio Green (#93C572). - Corner Style Toggle: Switch seamlessly between Rounded (smooth organic curves) and Sharp (clean geometric brutalist edges).
- Light & Dark Mode: True dark mode for AMOLED battery saving and crisp light mode for daylight practice.
- Framework: Flutter (Dart 3)
- Design Philosophy: SOLID & Feature-Driven Architecture
- Modularity: Strict code health enforcement — every file is under 400 lines of code.
- Storage: Offline-first local storage using
shared_preferencesand strongly-typed JSON models. - CI / CD: Multi-platform automated GitHub Actions workflow building and publishing releases across 5 operating systems on every semver tag.
Every push automatically builds, tests, and releases packages for all major operating systems:
| Platform | Format | Release Asset | Description |
|---|---|---|---|
| Android | .apk |
Tempest-*.apk |
Signed release APK ready for direct install or F-Droid |
| iOS | .ipa |
Tempest-*.ipa |
Sideloadable IPA (AltStore, Sideloadly, TrollStore) |
| Linux | .AppImage |
Tempest-*.AppImage |
Standalone portable executable for all Linux distributions |
| Windows | .msi |
Tempest-*.msi |
Windows Installer with standard installation wizard |
| Windows | .exe / .zip |
Tempest-*.exe / .zip |
Portable standalone Windows executable and runtime bundle |
| Web | Web App | zeroneroiv.github.io/Tempest | Live instant web app hosted on GitHub Pages |
| Web | .zip |
Tempest-*-web.zip |
Offline-first HTML5/Wasm web application bundle |
👉 Download All Platform Builds from Latest Release
- Flutter SDK (3.13.5 or newer)
# Clone the repository
git clone https://github.com/ZeroNeroIV/Tempest.git
cd Tempest
# Install dependencies
flutter pub get
# Run static analysis
flutter analyze
# Run unit & widget test suite
flutter test
# Run app on connected device or emulator
flutter runZeroNeroIV (Alameen Mahmoud Mohammed Sabbah)
- GitHub: @ZeroNeroIV
- Email: alameensabbahj@gmail.com
Contributions are welcome! Please check out our Contributing Guide and Code of Conduct.
- Fork the repo.
- Create your branch (
git checkout -b feature/cool-feature). - Commit your changes (
git commit -m "feat: add inspection voice countdown"). - Push to the branch (
git push origin feature/cool-feature). - Open a Pull Request.
Copyright (c) 2026 ZeroNeroIV (Alameen Mahmoud Mohammed Sabbah).
This software is distributed under a Non-Commercial License.
- Free for Personal & Educational Use: You are free to view, download, compile, and use Tempest for personal practice, competitions, and non-commercial purposes.
- Commercial Restrictions: Commercial sale, sublicensing, monetization, or paid distribution without an explicit prior commercial license and royalty agreement with the author is strictly prohibited. For commercial licensing inquiries, contact @ZeroNeroIV or email alameensabbahj@gmail.com.
See the LICENSE file for full legal terms.