# Dirac equation vs Algo Viewer

The clearest difference is in-app purchases: Dirac equation at none against Algo Viewer's 1. Dirac equation also leads on iOS requirement (17 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Algo Viewer sells 1 one-off in-app purchase. Dirac equation asks for nothing beyond the download.

## The numbers

| Metric | Dirac equation | Algo Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 months |
| Size | 5 MB | 18 MB |
| Requires iOS | **17** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Abraham Abreu](https://appshunter.io/developer/1260832200) |

## What reviewers say

### Dirac equation

[App page](https://appshunter.io/ios/app/dirac-equation/id6739155551)

**Features:** macOS Compatibility

**In-app purchases:** none


### Algo Viewer

[App page](https://appshunter.io/ios/app/algo-viewer/id6754825780)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $0.99 | one-time |


## Frequently asked questions

### Is Dirac equation free?

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

### Is Algo Viewer free?

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

### Do Dirac equation or Algo Viewer have ads?

Neither Dirac equation nor Algo Viewer shows ads.

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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.*