# Fuse vs Kiiro

The clearest difference is in-app purchases: Fuse at none against Kiiro's 3. Fuse also leads on iOS requirement (8.0 vs 18.0). Kiiro's advantage is update cadence (fortnightly vs every 47 months). On price, ads and device support there is nothing between them.

Both are free to download. Kiiro sells 3 in-app purchases, starting at $14.99 per month. Fuse asks for nothing beyond the download.

Fuse ships an update every 47 months, Kiiro fortnightly. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Fuse | Kiiro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/kiiro-running-trainer-and-plans/id6749277384/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 47 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 5 MB | 55 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Cynd Co.,Ltd.](https://appshunter.io/developer/512501162) | [endurance101 OÜ](https://appshunter.io/developer/1824960103) |

## What reviewers say

### Fuse

[App page](https://appshunter.io/ios/app/fuse/id1021877453)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kiiro

[App page](https://appshunter.io/ios/app/kiiro-running-trainer-and-plans/id6749277384)

This app helps runners understand their training by analyzing data like training load, heart rate zones, and progress. It provides clear insights and warnings to prevent overtraining and ensure effective workouts.

**Highlights:** Training load analysis, Heart rate zone tracking, Progress visualization, VO2 max trends, Automatic route matching, Personal records

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $14.99 | per month |
| Annual | $99.99 | per year |
| Yearly | $99.99 | per year |


## Frequently asked questions

### Is Fuse free?

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

### Is Kiiro free?

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

### Do Fuse or Kiiro have ads?

Neither Fuse nor Kiiro shows ads.

### Which is updated more often, Fuse or Kiiro?

Fuse ships an update every 47 months, and Kiiro fortnightly. Most recently, Fuse was updated on November 1, 2026 and Kiiro on November 5, 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.*