IntervalForge — Interval Timer

No subscription. Buy once. Interval timer for HIIT, strength training & Tabata with Live Activity on your Lock Screen. 3 built-in presets to get you started instantly.

72-point digits you can read from across the gym. Live Activity countdown right on your Lock Screen. Pay once, use forever — no subscriptions.

READY-MADE PRESETS Three built-in templates to get you started instantly: Tabata Classic (20s/10s × 8 sets), HIIT 30/15 (3 sets with 60s rest), and Circuit 3-Exercise (4 sets with 90s rest).

BIG NUMBERS FOR THE GYM 72-point digits you can read from a distance. The entire screen turns red during work and green during rest — a quick glance tells you exactly where you are.

LIVE ACTIVITY See your countdown on the Lock Screen and Dynamic Island in real time. No need to open the app to check your remaining time. Live Activity is available for free.

BACKGROUND TIMER Lock your screen, switch apps, play music — the timer keeps running. Notifications alert you at every interval change.

FULLY CUSTOMIZABLE Set work and rest durations, number of sets, and rest between sets. Add a name, icon, and color to each workout.

BUY ONCE, USE FOREVER No monthly fees. The Pro upgrade ($2.99) is a one-time purchase that unlocks unlimited workout saves and preset editing. Free users get 3 presets plus 1 custom workout.

FEATURES

• Buy once — no subscriptions
• 72pt large display
• Live Activity & Dynamic Island (free)
• Full-screen color indicators (red = work, green = rest)
• 3-second countdown alerts
• Haptic feedback
• Background operation
• 3 preset templates
• Workout history
• Screen sleep prevention