# Fast vs KBox

The clearest difference is update cadence: KBox at every 5 weeks against Fast's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Fast ships an update every 3 months, KBox every 5 weeks. The most recent releases landed on October 18, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Fast | KBox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Size | 8 MB | 10 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DOCAPOSTE FAST](https://appshunter.io/developer/1803359163) | [Qualigraf](https://appshunter.io/developer/398960166) |

## What reviewers say

### Fast

[App page](https://appshunter.io/ios/app/fast-parapheur/id568376495)

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

**In-app purchases:** none


### KBox

[App page](https://appshunter.io/ios/app/kbox/id1496588031)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fast free?

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

### Is KBox free?

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

### Do Fast or KBox have ads?

Neither Fast nor KBox shows ads.

### Which is updated more often, Fast or KBox?

Fast ships an update every 3 months, and KBox every 5 weeks. Most recently, Fast was updated on October 18, 2026 and KBox on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*