# Cogniprep vs ADF Test Trainer (JOA Prep)

The clearest difference is in-app purchases: Cogniprep at none against ADF Test Trainer (JOA Prep)'s 2. Cogniprep also leads on iOS requirement (11.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ADF Test Trainer (JOA Prep) sells 2 in-app purchases, starting at $9.99 per 7 days. Cogniprep asks for nothing beyond the download.

Cogniprep ships an update every 3 months, ADF Test Trainer (JOA Prep) every 6 weeks. The most recent releases landed on September 13, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Cogniprep | ADF Test Trainer (JOA Prep) |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 54 MB | 172 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Policeprep](https://appshunter.io/developer/1517346756) | [Seliant ApS](https://appshunter.io/developer/554676523) |

## What reviewers say

### Cogniprep

[App page](https://appshunter.io/ios/app/cogniprep/id1517346757)

Enhance your cognitive abilities with this interactive training application. It offers engaging exercises to boost calculation speed and understanding of mental processes. This app complements paid exam preparation courses.

**Highlights:** Interactive brain training, Improve calculation skills, Learn about mental processes, Fun and engaging exercises, Complements exam preparation

**Features:** macOS Compatibility

**In-app purchases:** none


### ADF Test Trainer (JOA Prep)

[App page](https://appshunter.io/ios/app/adf-test-trainer-joa-prep/id6748261766)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ADF Trainer, Weekly | $9.99 | per 7 days |
| ADF Trainer, Monthly | $14.99 | per month |


## Frequently asked questions

### Is Cogniprep free?

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

### Is ADF Test Trainer (JOA Prep) free?

ADF Test Trainer (JOA Prep) is free to download, with in-app purchases available.

### Do Cogniprep or ADF Test Trainer (JOA Prep) have ads?

Neither Cogniprep nor ADF Test Trainer (JOA Prep) shows ads.

### Which is updated more often, Cogniprep or ADF Test Trainer (JOA Prep)?

Cogniprep ships an update every 3 months, and ADF Test Trainer (JOA Prep) every 6 weeks. Most recently, Cogniprep was updated on September 13, 2026 and ADF Test Trainer (JOA Prep) on September 23, 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.*