# Fast App. vs Knox Digital

The clearest difference is update cadence: Knox Digital at every 2 weeks against Fast App.'s every 18 months. Knox Digital also leads on iOS requirement (15.5 vs 26.0). 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 App. ships an update every 18 months, Knox Digital every 2 weeks. The most recent releases landed on September 17, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Fast App. | Knox Digital |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 2 weeks** |
| Size | 4 MB | 110 MB |
| Requires iOS | 26.0 | **15.5** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Abid Hussain](https://appshunter.io/developer/1610167314) | [Muhammad Aitizaz](https://appshunter.io/developer/1886262677) |

## What reviewers say

### Fast App.

[App page](https://appshunter.io/ios/app/fast-app/id1610167312)

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

**In-app purchases:** none


### Knox Digital

[App page](https://appshunter.io/ios/app/knox-digital/id6760792436)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fast App. free?

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

### Is Knox Digital free?

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

### Do Fast App. or Knox Digital have ads?

Neither Fast App. nor Knox Digital shows ads.

### Which is updated more often, Fast App. or Knox Digital?

Fast App. ships an update every 18 months, and Knox Digital every 2 weeks. Most recently, Fast App. was updated on September 17, 2026 and Knox Digital on September 23, 2026.

---

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