# EyeMed vs Causal Loop Diagram

The clearest difference is in-app purchases: Causal Loop Diagram at none against EyeMed's 3. EyeMed's advantage is update cadence (every 6 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. EyeMed sells 3 in-app purchases, starting at $2.99 per 7 days. Causal Loop Diagram asks for nothing beyond the download.

EyeMed ships an update every 6 days, Causal Loop Diagram every 3 weeks. The most recent releases landed on October 22, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | EyeMed | Causal Loop Diagram |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Size | 18 MB | 4 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Igor Stojanovic](https://appshunter.io/developer/1823750175) | [seiji honda](https://appshunter.io/developer/1896430544) |

## What reviewers say

### EyeMed

[App page](https://appshunter.io/ios/app/eyemed-adhd-solver/id6761648698)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Monthly subscription | $9.99 | per month |
| Focus Pro Yearly | $24.99 | per year |


### Causal Loop Diagram

[App page](https://appshunter.io/ios/app/causal-loop-diagram/id6769942289)

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

**In-app purchases:** none


## Frequently asked questions

### Is EyeMed free?

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

### Is Causal Loop Diagram free?

Causal Loop Diagram is free to download, with no in-app purchases.

### Do EyeMed or Causal Loop Diagram have ads?

Neither EyeMed nor Causal Loop Diagram shows ads.

### Which is updated more often, EyeMed or Causal Loop Diagram?

EyeMed ships an update every 6 days, and Causal Loop Diagram every 3 weeks. Most recently, EyeMed was updated on October 22, 2026 and Causal Loop Diagram on October 10, 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.*