Vault Timer

Designed for Every Athlete

Purpose-built for HIIT, strength training, boxing, BJJ, and custom interval workouts

🎙️

Professional Voice Cues

Two premium voice packs (Brian & Amy) guide you through every round, announcing work periods, rest intervals, and round counts. Completely customizable volume and toggle on/off.

Brian & Amy voice packs included
Announcements for work, rest, and rounds
Adjustable volume control (0-100%)
Toggle voice on/off per session

🏗️

Custom Workout Builder

Create unlimited workout presets with precision control. Build circuits, EMOM workouts, or anything in between. Organize exercises by sport with our built-in exercise library.

55+ pre-built exercises (Strength, Cardio, Core, Combat, Recovery)
Custom exercise support
Adjustable work/rest times per exercise
Multiple sets and rounds
Circuit and Rep Counting modes

⏱️

Precision Timer

Crystal-clear display with large, readable text and a visual progress ring that fills as each interval completes. Color-coded phases for instant visual feedback.

Large, easy-to-read countdown display
Visual progress ring (fills during intervals)
Color-coded phases: green (work), blue (rest), amber (10s warning), red (5s warning)
Full-screen immersive mode

📊

Progress Tracking & History

Track every workout you complete. View your history, build streaks, and watch your consistency grow. All data stored locally on your device.

Complete workout history
Workout streaks
Total rounds and duration tracking
Local device storage (no cloud required)

📳

Haptic Feedback

Feel every transition with precise haptic feedback on phase changes. Haptics can be toggled on/off in settings, giving you the choice of how immersive your experience is.

Haptic feedback on phase transitions
Toggle on/off in settings
Works on all supported iPhones

🔒

Background Timer & Lock Screen

Keep training even when your screen is locked. Timer runs in the background with local notifications alerting you to phase changes. Perfect for outdoor training.

Runs in background during workouts
Local notifications at phase transitions
Prevents screen lock during active timer
Battery efficient

⚙️

Sport-Specific Presets

Start instantly with built-in presets for HIIT, Fat Burn, Strength, Boxing, and BJJ. Each preset is optimized for that specific sport.

HIIT (30s work / 30s rest)
Fat Burn (40s work / 20s rest)
Strength (45s work / 90s rest)
Boxing (3m rounds / 1m rest)
BJJ (5m rounds / 1m rest)

🎨

Appearance Customization

Choose from multiple color themes and customize the app to match your style. Full dark mode support with no eye strain.

Multiple color themes
Color background option tints timer to match phase
Full dark mode support
Clean, distraction-free interface

Quick Start Presets

Jump into a preset workout or customize your own

⚡

HIIT

30s work / 30s rest • 10 rounds

🔥

Fat Burn

40s work / 20s rest • 8 rounds

💪

Strength

45s work / 90s rest • 6 rounds

🥊

Boxing

3m rounds / 1m rest • 12 rounds

🥋

BJJ

5m rounds / 1m rest • 6 rounds

✏️

Custom

Build your own workout

Built with Quality

Professional engineering meets beautiful design

Native iOS Performance

Built with React Native and Expo for smooth, responsive performance across all iPhone models. Optimized for speed and battery efficiency.

Privacy First

All data stored locally on your device. No cloud syncing, no data collection, no tracking. Your workouts stay private.

Offline First

Complete timer functionality offline. Internet connection not required. Notifications use local system, no external services.

Accessible Design

Large, readable text. High contrast colors. Full support for system accessibility features. Designed for all athletes.

Battery Optimized

Efficient background timer that minimizes battery drain. Runs smoothly even during long training sessions.

Always Updated

Regular updates with new features and improvements. Your one-time purchase includes all future updates.

Premium Interval Training