# FET ACADEMY vs Sun Institutions

The clearest difference is in-app purchases: Sun Institutions at none against FET ACADEMY's 1. Sun Institutions also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. FET ACADEMY sells 1 one-off in-app purchase. Sun Institutions asks for nothing beyond the download.

FET ACADEMY ships an update every 2 months, Sun Institutions every 2 weeks. The most recent releases landed on October 25, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | FET ACADEMY | Sun Institutions |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 56 MB | 33 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [FITNESS ENERGY TRANSFORMERS FET ACADEMY LTD](https://appshunter.io/developer/1652680076) | [Intense Technologies Limited](https://appshunter.io/developer/967960560) |

## What reviewers say

### FET ACADEMY

[App page](https://appshunter.io/ios/app/fet-academy/id6749005445)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diastasis Recti Specialist | $959.00 | one-time |


### Sun Institutions

[App page](https://appshunter.io/ios/app/sun-institutions/id6772962877)

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

**In-app purchases:** none


## Frequently asked questions

### Is FET ACADEMY free?

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

### Is Sun Institutions free?

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

### Do FET ACADEMY or Sun Institutions have ads?

Neither FET ACADEMY nor Sun Institutions shows ads.

### Which is updated more often, FET ACADEMY or Sun Institutions?

FET ACADEMY ships an update every 2 months, and Sun Institutions every 2 weeks. Most recently, FET ACADEMY was updated on October 25, 2026 and Sun Institutions on October 17, 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.*