# Fitter vs Kapi

The clearest difference is in-app purchases: Kapi at none against Fitter's 1. Kapi also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Fitter sells 1 one-off in-app purchase. Kapi asks for nothing beyond the download.

Fitter ships an update weekly, Kapi every 9 days. The most recent releases landed on October 29, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Fitter | Kapi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (68 ratings)](https://appshunter.io/ios/app/fitter-bike/id1528225944/reviews)** | — |
| Number of ratings | **68** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Free with in-app purchases | — |
| Size | 39 MB | 48 MB |
| Requires iOS | 17 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jongheon Lee](https://appshunter.io/developer/1528225946) | [Nebo Lab LLC](https://appshunter.io/developer/6799788661) |

## What reviewers say

### Fitter

[App page](https://appshunter.io/ios/app/fitter-bike/id1528225944)

Improve your cycling efficiency and safety with AI-powered posture analysis.  Simply record a video of yourself riding to receive an easy diagnosis and corrections for improper saddle height, reducing injury risk.

**Highlights:** AI-powered posture diagnosis, Video analysis of riding posture, Saddle height correction, Injury risk reduction, Improved cycling efficiency

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | one-time |


### Kapi

[App page](https://appshunter.io/ios/app/kapi/id6799788659)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fitter free?

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

### Is Kapi free?

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

### Do Fitter or Kapi have ads?

Fitter shows ads; Kapi does not.

### Which is updated more often, Fitter or Kapi?

Fitter ships an update weekly, and Kapi every 9 days. Most recently, Fitter was updated on October 29, 2026 and Kapi on October 8, 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.*