# KB Movement vs Fitness AI

The clearest difference is in-app purchases: KB Movement at none against Fitness AI's 1. KB Movement also leads on ads (none vs shown). Fitness AI's advantage is update cadence (every 4 days vs every 18 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Fitness AI sells 1 one-off in-app purchase. KB Movement asks for nothing beyond the download.

KB Movement ships an update every 18 months, Fitness AI every 4 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | KB Movement | Fitness AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 18 months | **Every 4 days** |
| Size | 101 MB | 29 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [lvlup-app, Inc.](https://appshunter.io/developer/1580197540) | [Oleksii Petrochenko](https://appshunter.io/developer/1669228110) |

## What reviewers say

### KB Movement

[App page](https://appshunter.io/ios/app/kb-movement/id6741211465)

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

**In-app purchases:** none


### Fitness AI

[App page](https://appshunter.io/ios/app/fitness-ai-program-generator/id6744560657)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO tier | $1.99 | one-time |


## Frequently asked questions

### Is KB Movement free?

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

### Is Fitness AI free?

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

### Do KB Movement or Fitness AI have ads?

Fitness AI shows ads; KB Movement does not.

### Which is updated more often, KB Movement or Fitness AI?

KB Movement ships an update every 18 months, and Fitness AI every 4 days. Most recently, KB Movement was updated on October 30, 2026 and Fitness AI 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.*