# Hydra Trainer vs BaPsyPrep

The clearest difference is in-app purchases: Hydra Trainer at none against BaPsyPrep's 1. Hydra Trainer also leads on iOS requirement (18.5 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. BaPsyPrep sells 1 in-app purchase, starting at $11.99 per month. Hydra Trainer asks for nothing beyond the download.

Hydra Trainer ships an update weekly, BaPsyPrep every 10 days. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Hydra Trainer | BaPsyPrep |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Free | — |
| Size | 39 MB | 79 MB |
| Requires iOS | **18.5** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Midnite Compile GmbH](https://appshunter.io/developer/1850145762) | [Juan Eduardo Huke](https://appshunter.io/developer/1860414223) |

## What reviewers say

### Hydra Trainer

[App page](https://appshunter.io/ios/app/hydra-trainer/id6754796903)

This app offers targeted cognitive training for demanding selection processes, including police, special forces, and leadership courses. It features a variety of exercises to improve logical thinking, pattern recognition, memory, and attention, with adaptive difficulty and progress tracking.

**Highlights:** Number sequences and equations, Matrix and pattern recognition, Anagrams and word finding, Pauli-style arithmetic tests, Folding template test, Occluded motion test, Memory test, Stroop, d-Test & Form Focus Test

**Features:** macOS Compatibility

**In-app purchases:** none


### BaPsyPrep

[App page](https://appshunter.io/ios/app/bapsyprep/id6757331606)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Zugang (Monatlich) | $11.99 | per month |


## Frequently asked questions

### Is Hydra Trainer free?

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

### Is BaPsyPrep free?

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

### Do Hydra Trainer or BaPsyPrep have ads?

Neither Hydra Trainer nor BaPsyPrep shows ads.

### Which is updated more often, Hydra Trainer or BaPsyPrep?

Hydra Trainer ships an update weekly, and BaPsyPrep every 10 days. Most recently, Hydra Trainer was updated on September 21, 2026 and BaPsyPrep on September 9, 2026.

---

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