# IntervalForge vs PeakInterval

The clearest difference is in-app purchases: PeakInterval at none against IntervalForge's 1. PeakInterval also leads on update cadence (every 3 days vs every 2 weeks) and iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. IntervalForge sells 1 one-off in-app purchase. PeakInterval asks for nothing beyond the download.

IntervalForge ships an update every 2 weeks, PeakInterval every 3 days. The most recent releases landed on September 10, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | IntervalForge | PeakInterval |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 1 MB | 3 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Shuto Nishiyama](https://appshunter.io/developer/1879174354) | [OANA RINALDI](https://appshunter.io/developer/1709880614) |

## What reviewers say

### IntervalForge

[App page](https://appshunter.io/ios/app/intervalforge-interval-timer/id6759606731)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

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


### PeakInterval

[App page](https://appshunter.io/ios/app/peakinterval-hiit-timer/id6790185600)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is IntervalForge free?

IntervalForge is free to download, with in-app purchases available.

### Is PeakInterval free?

PeakInterval is free to download, with no in-app purchases.

### Do IntervalForge or PeakInterval have ads?

Neither IntervalForge nor PeakInterval shows ads.

### Which is updated more often, IntervalForge or PeakInterval?

IntervalForge ships an update every 2 weeks, and PeakInterval every 3 days. Most recently, IntervalForge was updated on September 10, 2026 and PeakInterval on September 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*