Fastlance is a powerful interval timer app for HIIT, Tabata, and circuit training. Simple, fast, and effective - get into your workout in seconds with precise timing and motivating feedback.
⚙️ CUSTOM TIMER Create your own intervals: - Set work time: 5-300 seconds - Set rest time: 5-300 seconds - Set rounds: 1-50 - Quick preset buttons (20/10, 30/30, 45/15, 60/30) - Instant validation and start
⏱️ PROFESSIONAL TIMER - Large countdown display (minutes:seconds) - Clear work/rest phase indicators - Round counter (Round X of Y) - Start/Pause/Resume controls - Reset anytime - Automatic phase transitions
📊 PROGRESS TRACKING - Total workouts completed counter - Total training minutes accumulated - Daily streak tracker (consecutive days) - Auto-save after each workout - Persistent statistics (survives app restart) - Visual stats display with emojis
🎯 ONE-TAP START Every workout starts with a single tap: 1. Choose a preset workout OR create custom 2. Tap "START WORKOUT" button 3. Timer begins countdown immediately 4. Audio and vibration guide you through 5. Statistics update automatically when done
✨ KEY FEATURES - 6 ready-to-use workout templates - Unlimited custom timer creation - Real countdown timer (updates every second) - Work phase → Rest phase → automatic transitions - Round counter with progress display - Pause and resume anytime - Complete workout dialog with summary - Streak system for motivation - Sound beeps and vibration patterns - No ads, no subscriptions, no login - Works 100% offline - No data collection - Modern, clean interface - Orange and blue theme - Status bar color matching
💪 PERFECT FOR - HIIT (High-Intensity Interval Training) - Tabata protocol workouts - Circuit training sessions - Boxing and MMA rounds - CrossFit WODs - Cardio intervals - Sprint training - Strength training - Bodyweight exercises - Home workouts - Gym training - Outdoor fitness
🔥 HOW IT WORKS The timer runs through your selected intervals: 1. WORK phase - exercise time (timer counts down) 2. REST phase - recovery time (automatic transition) 3. Repeat for the number of rounds you chose 4. COMPLETE - dialog shows summary, stats update
During workout: - "WORK TIME!" - green border, timer counting down - "REST TIME" - blue border, recovery countdown - Beep sounds at 3, 2, 1 seconds - Vibration on every phase change - Pause button to take breaks - Reset button to start over
📱 TECHNICAL - Minimum Android 5.0 (API 21) - Target Android 14 (API 34) - Single Activity architecture - Handler-based precise timing - SharedPreferences for data storage - ToneGenerator for beep sounds - Vibrator for haptic feedback - No external dependencies - Battery efficient - Small app size
🔒 PRIVACY Your data stays on your device: - No internet connection required - No account registration - No cloud sync - No data collection - No analytics or tracking - All stats stored locally - Safe for all ages
⚠️ IMPORTANT - Only requires VIBRATE permission (for haptic feedback) - Timer continues if you minimize the app - Statistics are saved automatically after each workout - Streak resets if you skip a day - Custom timer validates input (prevents errors)
Perfect for anyone who wants effective interval training with professional timing and progress tracking.