Free interval timer for boxing, HIIT, and other training methods
The iPhone strength log that counts reps in reserve on every set
Stage
Not given
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Founded
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Based in
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RO
Pricing model
Free
Freemium
Pricing
Not given
Free: unlimited sets and sessions, full history, CSV and JSON export, works offline, no account required. Pro: $4.99 per month or $29.99 per year (with first month free on annual plan).
Key features
Wall clock time reading for accuracy without internal counters
Customizable rounds, work, rest, and get-ready intervals
Keyboard controls for start, pause, and navigation
Share workout configurations via URL
Runs on phones, laptops, and gym displays without installation
Log weight, reps and reps in reserve in two taps between sets
Rest timer that starts itself with Live Activity
RIR-aware personal records
Plain-sentence reads of training trends
Import from Hevy, Strong and generic CSV exports
Works fully offline with optional sync
438 exercises in library
Four PR ladders per lift
RIR-adjusted estimated 1RM formula
What makes it different
Reads wall clock every frame instead of maintaining a counter to avoid timing drift
Entire screen changes color by phase so timer is readable from across a room
Every default number cites its source from rulebooks, statutes, or published studies
Records only count when effort backs them up, not just based on weight lifted
Plain sentence weekly reads of training progress instead of charts to interpret
Bursta
NotchLift