# Psychology vs Tensei Algorithm

The clearest difference is in-app purchases: Tensei Algorithm at none against Psychology's 1. Psychology's advantage is ads (none vs shown) and iOS requirement (14.0 vs 26.2). On price, update cadence and device support there is nothing between them.

Both are free to download. Psychology sells 1 one-off in-app purchase. Tensei Algorithm asks for nothing beyond the download.

Psychology ships an update every 10 days, Tensei Algorithm every 5 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Psychology | Tensei Algorithm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 5 days** |
| Size | 179 MB | 29 MB |
| Requires iOS | **14.0** | 26.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Man Hung Sun](https://appshunter.io/developer/1471605573) | [KAORU IMAI](https://appshunter.io/developer/1890363790) |

## What reviewers say

### Psychology

[App page](https://appshunter.io/ios/app/psychology-brain-control/id1618784784)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade | $0.99 | one-time |


### Tensei Algorithm

[App page](https://appshunter.io/ios/app/tensei-algorithm/id6761587481)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Psychology free?

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

### Is Tensei Algorithm free?

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

### Do Psychology or Tensei Algorithm have ads?

Tensei Algorithm shows ads; Psychology does not.

### Which is updated more often, Psychology or Tensei Algorithm?

Psychology ships an update every 10 days, and Tensei Algorithm every 5 days. Most recently, Psychology was updated on October 27, 2026 and Tensei Algorithm on October 25, 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.*