# Memorization Techniques vs Control Shrimp

The clearest difference is in-app purchases: Control Shrimp at none against Memorization Techniques's 1. Control Shrimp also leads on update cadence (daily vs every 10 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Memorization Techniques sells 1 one-off in-app purchase. Control Shrimp asks for nothing beyond the download.

Memorization Techniques ships an update every 10 days, Control Shrimp daily. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Memorization Techniques | Control Shrimp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Daily** |
| Size | 196 MB | 42 MB |
| Requires iOS | 14.0 | 14.0.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | +4 | 4+ |
| Developer | [Man Hung Sun](https://appshunter.io/developer/1471605573) | [Miguel Bustamante Feijoo](https://appshunter.io/developer/1785793990) |

## What reviewers say

### Memorization Techniques

[App page](https://appshunter.io/ios/app/memorization-techniques/id1618263817)

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

**In-app purchases (1)**

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


### Control Shrimp

[App page](https://appshunter.io/ios/app/control-shrimp/id6739515324)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Memorization Techniques free?

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

### Is Control Shrimp free?

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

### Do Memorization Techniques or Control Shrimp have ads?

Neither Memorization Techniques nor Control Shrimp shows ads.

### Which is updated more often, Memorization Techniques or Control Shrimp?

Memorization Techniques ships an update every 10 days, and Control Shrimp daily. Most recently, Memorization Techniques was updated on October 5, 2026 and Control Shrimp on October 12, 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.*