# Mariabs · Interval Timer vs Coach Clock

The clearest difference is in-app purchases: Mariabs · Interval Timer at none against Coach Clock's 1. Mariabs · Interval Timer also leads on ads (none vs shown) and update cadence (every 6 days vs every 2 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Coach Clock sells 1 one-off in-app purchase. Mariabs · Interval Timer asks for nothing beyond the download.

Mariabs · Interval Timer ships an update every 6 days, Coach Clock every 2 weeks. The most recent releases landed on October 8, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Mariabs · Interval Timer | Coach Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Size | 4 MB | 15 MB |
| Requires iOS | **16.2** | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PER MAGNE HELSETH](https://appshunter.io/developer/1895962879) | [Quoc Nguyen](https://appshunter.io/developer/1883194471) |

## 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


### Coach Clock

[App page](https://appshunter.io/ios/app/coach-clock-class-timer/id6781803094)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coach Clock Pro | $19.99 | one-time |


## Frequently asked questions

### Is Mariabs · Interval Timer free?

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

### Is Coach Clock free?

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

### Do Mariabs · Interval Timer or Coach Clock have ads?

Coach Clock shows ads; Mariabs · Interval Timer does not.

### Which is updated more often, Mariabs · Interval Timer or Coach Clock?

Mariabs · Interval Timer ships an update every 6 days, and Coach Clock every 2 weeks. Most recently, Mariabs · Interval Timer was updated on October 8, 2026 and Coach Clock on September 28, 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.*