# Interval Workouts & Exercises vs Kuromaru

The clearest difference is update cadence: Interval Workouts & Exercises at fortnightly against Kuromaru's monthly. Kuromaru's advantage is iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Interval Workouts & Exercises sells 2 in-app purchases, starting at $69.99 per year and Kuromaru sells 1 in-app purchase, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Interval Workouts & Exercises ships an update fortnightly, Kuromaru monthly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Interval Workouts & Exercises | Kuromaru |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 163 MB | 104 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RARUS-SOFT, OOO](https://appshunter.io/developer/1501340314) | [Motion Nexus GmbH](https://appshunter.io/developer/1654323603) |

## What reviewers say

### Interval Workouts & Exercises

[App page](https://appshunter.io/ios/app/interval-workouts-and-exercises/id6449491895)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access - Yearly | $69.99 | per year |
| Full Access - Yearly | $69.99 | per year |


### Kuromaru

[App page](https://appshunter.io/ios/app/kuromaru/id6741827222)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Pro Subscription | $12.99 | per month |


## Frequently asked questions

### Is Interval Workouts & Exercises free?

Interval Workouts & Exercises is free to download, with in-app purchases available.

### Is Kuromaru free?

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

### Do Interval Workouts & Exercises or Kuromaru have ads?

Neither Interval Workouts & Exercises nor Kuromaru shows ads.

### Which is updated more often, Interval Workouts & Exercises or Kuromaru?

Interval Workouts & Exercises ships an update fortnightly, and Kuromaru monthly. Most recently, Interval Workouts & Exercises was updated on November 3, 2026 and Kuromaru on October 30, 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.*