# Strength Academy vs KO Interval Timer

The clearest difference is in-app purchases: Strength Academy at none against KO Interval Timer's 2. Strength Academy also leads on device support (4 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. KO Interval Timer sells 2 in-app purchases, starting at $3.99 per month. Strength Academy asks for nothing beyond the download.

## The numbers

| Metric | Strength Academy | KO Interval Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Size | 133 MB | 74 MB |
| Requires iOS | **15.5** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [StrengthAcademy Sarl](https://appshunter.io/developer/6780976435) | [VAVIVA](https://appshunter.io/developer/6807737098) |

## What reviewers say

### Strength Academy

[App page](https://appshunter.io/ios/app/strength-academy-coaching/id6780976433)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### KO Interval Timer

[App page](https://appshunter.io/ios/app/ko-interval-timer/id6807770200)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| English | $3.99 | per month |
| English | $29.99 | per year |


## Frequently asked questions

### Is Strength Academy free?

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

### Is KO Interval Timer free?

KO Interval Timer is free to download, with in-app purchases available.

### Do Strength Academy or KO Interval Timer have ads?

Neither Strength Academy nor KO Interval Timer 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.*