# ATG PROTOCOL GYM vs CoreTech.

The clearest difference is update cadence: CoreTech. at fortnightly against ATG PROTOCOL GYM's every 26 months. ATG PROTOCOL GYM's advantage is iOS requirement (12.0 vs 15.0). 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.

ATG PROTOCOL GYM ships an update every 26 months, CoreTech. fortnightly. The most recent releases landed on September 9, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | ATG PROTOCOL GYM | CoreTech. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Fortnightly** |
| Size | 43 MB | 30 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thinkit doo](https://appshunter.io/developer/1392908612) | [Dusan Borovnica](https://appshunter.io/developer/1859686891) |

## What reviewers say

### ATG PROTOCOL GYM

[App page](https://appshunter.io/ios/app/atg-protocol-gym/id6444529311)

**Features:** macOS Compatibility

**In-app purchases:** none


### CoreTech.

[App page](https://appshunter.io/ios/app/coretech/id6758862555)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ATG PROTOCOL GYM free?

ATG PROTOCOL GYM is free to download, with no in-app purchases.

### Is CoreTech. free?

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

### Do ATG PROTOCOL GYM or CoreTech. have ads?

Neither ATG PROTOCOL GYM nor CoreTech. shows ads.

### Which is updated more often, ATG PROTOCOL GYM or CoreTech.?

ATG PROTOCOL GYM ships an update every 26 months, and CoreTech. fortnightly. Most recently, ATG PROTOCOL GYM was updated on September 9, 2026 and CoreTech. on September 14, 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.*