# Zkt Timer

> Zkt Timer is an advanced online Rubik's cube timer and speedcubing platform with live WCA competition tracking, real-time race rooms, algorithm trainer, smart cube BLE integration, and global leaderboards. Available on web, iOS, and Android via PWA and native apps.

## Core capabilities

- **Timer**: Millisecond-precision Rubik's cube timer with official WCA scramble algorithms, inspection countdown, penalty tracking (+2, DNF), multi-phase timing, and customizable UI
- **Scramble generation**: Client and server parity for all WCA events — 2x2, 3x3, 4x4, 5x5, 6x6, 7x7, 3x3 OH, 3x3 Blind, Pyraminx, Megaminx, Skewb, Square-1, Clock
- **Smart cube support**: BLE integration for GAN, Giiker, and Particula smart cubes with 3D visualization and gyroscope
- **Algorithm trainer**: OLL, PLL, F2L, ZBLL and more with per-algorithm stats, pattern visualization (2D + 3D), setup algorithm generation, PDF export
- **Puzzle solvers**: IDA*-based solvers for Cross, XCross, EOLine, EOCross, Roux FB, F2L, Petrus, ZZ, EODR, 2x2x2, SQ1, Pyraminx, Skewb
- **Competitions**: WCA competition tracking with live results, schedule, competitor assignments, personal bests
- **Multiplayer**: Real-time race rooms via Socket.IO, 1v1 battle mode, friend system
- **Data**: LokiJS local-first storage with IndexedDB, server sync, offline support, import/export (csTimer, Twisty Timer, Zkt Timer formats)
- **Stats**: Per-session and all-time statistics, averages, graphs, personal bests, cube-type buckets
- **Pro membership**: Advanced stats, unlimited sessions, PDF export, premium trainers

## Key pages

- [Home](https://zktimer.app/): Landing page with feature overview
- [Timer](https://zktimer.app/timer): Main Rubik's cube timer interface
- [Trainer](https://zktimer.app/trainer): Algorithm trainer for OLL, PLL, F2L, ZBLL
- [Live Rooms](https://zktimer.app/rooms): Real-time multiplayer race rooms
- [WCA Competitions](https://zktimer.app/community/competitions): All WCA Rubik's cube competitions worldwide with live results
- [Global Leaderboards](https://zktimer.app/ranks): Top solves and averages from all users
- [Pro](https://zktimer.app/pro): Premium membership features
- [Battle](https://zktimer.app/battle): 1v1 battle mode (mobile)
- [Sign Up](https://zktimer.app/signup): Create an account
- [Sitemap](https://zktimer.app/sitemap.xml): Full list of indexed URLs

## Technology

- Frontend: React 17, TypeScript, Redux, Apollo Client, LokiJS, SCSS + Tailwind CSS
- Backend: Node.js 20, Express, Apollo Server v2, type-graphql, Prisma ORM, PostgreSQL, Redis, Socket.IO
- Mobile: Capacitor v6 (iOS and Android native wrappers), web as PWA
- Rendering: Custom SSR pipeline with ReactDOM.hydrate
- Scrambles: Port of cstimer scramble engine
- Solvers: IDA* in Web Workers

## Supported languages

English, Turkish, Spanish, Russian. Cookie-based language switching with full in-app localization.

## Platforms

- Web: https://zktimer.app
- iOS App Store: https://apps.apple.com/app/zkt-timer/id6760920873
- Google Play Store: https://play.google.com/store/apps/details?id=com.zktimer.app
- PWA: Installable on any modern browser with offline support

## Links

- Sitemap: https://zktimer.app/sitemap.xml
- Robots: https://zktimer.app/robots.txt
- Instagram: https://www.instagram.com/zekakuputurkiye
- YouTube: https://www.youtube.com/@zekakuputurkiye