# HIIT Timer & Trainer vs PeakInterval

HIIT Timer & Trainer and PeakInterval are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. HIIT Timer & Trainer sells 2 one-off in-app purchases and PeakInterval sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

HIIT Timer & Trainer ships an update every 2 days, PeakInterval every 4 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | HIIT Timer & Trainer | PeakInterval |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 4 days |
| Size | 3 MB | 5 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Anton Popov](https://appshunter.io/developer/6773402224) | [OANA RINALDI](https://appshunter.io/developer/1709880614) |

## What reviewers say

### HIIT Timer & Trainer

[App page](https://appshunter.io/ios/app/hiit-timer-and-trainer/id6773600697)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock presets | $0.99 | one-time |
| Your Training Plans | $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 (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peak Plus Monthly | $3.99 | per month |
| Peak Plus Annual | $24.99 | per year |


## Frequently asked questions

### Is HIIT Timer & Trainer free?

HIIT Timer & Trainer is free to download, with in-app purchases available.

### Is PeakInterval free?

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

### Do HIIT Timer & Trainer or PeakInterval have ads?

Neither HIIT Timer & Trainer nor PeakInterval shows ads.

### Which is updated more often, HIIT Timer & Trainer or PeakInterval?

HIIT Timer & Trainer ships an update every 2 days, and PeakInterval every 4 days. Most recently, HIIT Timer & Trainer was updated on October 28, 2026 and PeakInterval on October 31, 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.*