# IntervalForge — Interval Timer — No Subscription Workout Timer

> No Subscription Workout Timer (iPhone/iPad app by Shuto Nishiyama.)

- Source: https://appshunter.io/ios/app/intervalforge-interval-timer/id6759606731 (this page in markdown: same URL + `.md`)
- Developer: [Shuto Nishiyama](https://appshunter.io/developer/1879174354)
- Category: Health & Fitness, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 1 MB
- Languages: American English, Japanese
- Released: 2026-03-21
- Data updated: 2026-07-22
- User reviews in markdown: https://appshunter.io/ios/app/intervalforge-interval-timer/id6759606731/reviews.md

## What is IntervalForge?

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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| IntervalForge Pro | $2.99 | one-time |



## Version history (last 5 releases)

### 1.0.6 — 2026-07-14

Minor improvements.

### 1.0.5 — 2026-06-21

Minor improvements.

### 1.0.4 — 2026-04-29

Minor improvements.

### 1.0.3 — 2026-04-14

Minor improvements.

### 1.0.2 — 2026-04-10

Minor improvements.

## More apps by Shuto Nishiyama

- [ScanPDF Lite](https://appshunter.io/ios/app/scanpdf-lite/id6759512455)
- [MuscleMemo - Workout Log](https://appshunter.io/ios/app/musclememo-workout-log/id6759721047)
- [CopyPaste AI - Formal & Email](https://appshunter.io/ios/app/copypaste-ai-formal-and-email/id6761990947)

All apps by Shuto Nishiyama: https://appshunter.io/developer/1879174354

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-22.*