# Mariabs · Interval Timer vs AmpHIIT

The clearest difference is in-app purchases: Mariabs · Interval Timer at none against AmpHIIT's 3. Mariabs · Interval Timer also leads on device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. AmpHIIT sells 3 one-off in-app purchases. Mariabs · Interval Timer asks for nothing beyond the download.

## The numbers

| Metric | Mariabs · Interval Timer | AmpHIIT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | — |
| Size | 4 MB | 7 MB |
| Requires iOS | **16.2** | 17.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [PER MAGNE HELSETH](https://appshunter.io/developer/1895962879) | [Steven Mayer](https://appshunter.io/developer/480483414) |

## What reviewers say

### Mariabs · Interval Timer

[App page](https://appshunter.io/ios/app/mariabs-interval-timer/id6765472133)

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

**In-app purchases:** none


### AmpHIIT

[App page](https://appshunter.io/ios/app/amphiit/id6784050589)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AmpHIIT | $0.99 | one-time |
| AmpHIIT | $1.99 | one-time |
| AmpHIIT | $3.99 | one-time |


## Frequently asked questions

### Is Mariabs · Interval Timer free?

Mariabs · Interval Timer is free to download, with no in-app purchases.

### Is AmpHIIT free?

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

### Do Mariabs · Interval Timer or AmpHIIT have ads?

Neither Mariabs · Interval Timer nor AmpHIIT shows ads.

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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.*