Fastlance

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.

🏋️ 6 PRE-BUILT WORKOUTS

Ready-to-use interval templates:

- Quick HIIT - 20s work / 10s rest, 8 rounds (4 min)

- Tabata Classic - 20s work / 10s rest, 8 rounds (4 min)

- Power Circuit - 45s work / 15s rest, 10 rounds (10 min)

- Cardio Blast - 30s work / 30s rest, 12 rounds (12 min)

- Strength Focus - 60s work / 30s rest, 6 rounds (9 min)

- Sprint Training - 15s work / 5s rest, 12 rounds (4 min)

⚙️ 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.