Stopwatch for Sports

Start your FREE 2-day Pro trial! Unlock interval training, heart rate tracking, and session history. Train smarter with iStopwatch.

Your all-in-one stopwatch, countdown timer, and workout companion - built for athletes, coaches, and anyone who values precision timing.

Track every second with lab-grade accuracy. Monitor your heart rate in real time. Crush your HIIT, Tabata, or Boxing intervals. iStopwatch is the only timer app you'll ever need.

PRECISION STOPWATCH

• Lap and split timing accurate to 1/100th of a second
• Live lap statistics - average, best, and worst times at a glance
• Unlimited lap recording with full session history
• Export and share your results instantly

COUNTDOWN TIMER

• Set hours, minutes, and seconds with intuitive wheel pickers
• Quick-start presets: 1, 3, 5, and 10 minutes
• Circular progress ring with animation
• Add time on the fly without losing your countdown

INTERVAL TIMER [PRO]

• Built-in presets for Tabata (20/10), HIIT (40/20), and Boxing (3min/1min)
• Fully customizable work, rest, and round settings
• Visual phase indicators with color-coded progress
• Haptic feedback keeps you in the zone

HEART RATE MONITOR [PRO]

• Real-time BPM from Apple Watch via HealthKit
• 24-hour heart rate history chart
• Min, max, and average stats
• Animated live heart visualization

STEP COUNTER

• Daily step count from Apple Health
• Weekly progress tracking with goals
• Battery efficient tracking

SESSION HISTORY [PRO]

• Automatic session saving
• Review laps, stats, and trends
• Delete or share sessions

SMART ALARMS

• Custom alarms with clean interface
• Stay on schedule for training

WHY ATHLETES CHOOSE ISTOPWATCH

• Clean, focused interface
• No ads
• Apple Watch and HealthKit support
• Lightweight and fast

FREE TO START Core features are free. Upgrade to Pro with a one-time purchase to unlock Interval Timer, Heart Rate Monitor, and Session History.