# GFE PAX vs Krypton

The clearest difference is update cadence: Krypton at monthly against GFE PAX's every 13 months. GFE PAX's advantage is iOS requirement (9.3 vs 13.0). 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.

GFE PAX ships an update every 13 months, Krypton monthly. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | GFE PAX | Krypton |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Size | 16 MB | 31 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Equideclic](https://appshunter.io/developer/417942955) | [Formatio](https://appshunter.io/developer/1626809122) |

## What reviewers say

### GFE PAX

[App page](https://appshunter.io/ios/app/gfe-pax/id815511070)

**Features:** macOS Compatibility

**In-app purchases:** none


### Krypton

[App page](https://appshunter.io/ios/app/krypton/id1589984146)

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

**In-app purchases:** none


## Frequently asked questions

### Is GFE PAX free?

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

### Is Krypton free?

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

### Do GFE PAX or Krypton have ads?

Neither GFE PAX nor Krypton shows ads.

### Which is updated more often, GFE PAX or Krypton?

GFE PAX ships an update every 13 months, and Krypton monthly. Most recently, GFE PAX was updated on October 26, 2026 and Krypton 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.*