
Free
About
NO ADS
Defective Interval Timer makes it easy to create and run timed interval sessions for workouts, stretching, training, recovery, practice, and everyday activities.
Choose your work time, rest time, number of rounds, and alert volume, then start the timer and follow clear visual, audio, vibration, and notification cues as you move through each interval.
Use quick settings to build your own timing pattern or choose from included Northwick Fitness-inspired presets for endurance training, superset/power sessions, and pre- or post-workout stretching.
FEATURES
• Custom work and rest intervals
• Up to 99 rounds
• Quick timer setup
• Northwick Fitness-inspired presets
• Pause and resume controls
• Hold-to-reset protection
• Clear work, rest, paused, and finished indicators
• Audio alerts for interval changes
• Vibration feedback
• Adjustable alert volume
• Background interval notifications
• Displays elapsed and total session time
• Optional $1 Support Developer purchase
• Works without an account
• No internet connection required for timer use
• No ads
The optional Support Developer purchase does not unlock content, remove restrictions, change timer features, or provide any advantage.
Whether you are exercising, stretching, studying, practicing, or completing timed tasks, Defective Interval Timer helps keep every session organized.
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What's New in DefectiveIntervalTimer
1.1
August 21, 2026
This update adds an optional $1 Support Developer purchase and includes general compatibility and interface improvements. The existing interval timer, presets, alerts, vibration, and background timing features remain unchanged.
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