Swimming Lap Tracker

Swimming Lap Tracker is a precise lap counter, interval timer and swim workout log for Apple Watch and iPhone.

Mark laps with the Digital Crown or the Action Button on Apple Watch Ultra. You control exactly when each lap or interval is recorded, without relying on automatic lap detection. Live swim metrics stay visible on your wrist, with detailed analysis waiting on iPhone.

BUILD CUSTOM SWIM SETS

Create structured training sessions in the Set Builder, then sync them to Apple Watch.

• Build complete workouts with multiple named stages
• Set distance or repeats with a separate interval distance
• Choose stroke, drills, equipment, rest and notes
• Add breathing targets and bilateral breathing
• Reorder stages and keep multiple training sets
• Follow stage-by-stage prompts and progress on Apple Watch
• Sync new, edited and deleted sets between iPhone and Watch

PRECISE LAP AND INTERVAL TRACKING

• Fast manual lap marking with the Digital Crown
• Action Button support on Apple Watch Ultra
• Manual Lap Mode for separate swim and rest timing
• Interval modes with distance, fixed rest or manual rest
• Repeat intervals with optional send-off times
• Mixed-distance interval sessions
• Metres and yards
• Pool presets or custom lengths from 1m to 250m or 1y to 250y
• Open Water Mode with GPS distance

LIVE METRICS ON APPLE WATCH

See lap time, total time, distance, completed lengths, strokes and heart rate while you swim. Custom workouts also show the current stage, interval progress, stroke, drill, equipment, breathing target and rest.

DETAILED SWIM ANALYSIS ON IPHONE

Review total distance, duration, average pace, individual lap and interval times, custom workout stages, heart rate, strokes, active calories, motion charts and recorded swim locations. Motion data can also be exported as CSV.

Swimming Lap Tracker supports metre and yard results and saves completed workouts to Apple Health.

HOW IT WORKS

Choose your pool length or Open Water Mode, select a workout mode and tap Start Swim. Mark each lap or interval from your wrist while Swimming Lap Tracker records your workout for later review.

PERMISSIONS

Health access is required to record workouts and heart rate. Motion access enables stroke and movement analysis. Location access enables swim locations and open-water GPS distance.

APPLE WATCH ULTRA ACTION BUTTON

After installation, open Settings on Apple Watch and choose Action Button. Select Swimming Lap Tracker as the app, set First Press to Start a Workout, and choose Swim Laps as the workout. Open Swimming Lap Tracker with the Action Button before using it to mark laps.

Requires iOS 18.2 or later and watchOS 11.2 or later.