# Common Error vs Attend Class

The clearest difference is update cadence: Attend Class at every 2 months against Common Error's every 35 months. Common Error's advantage is iOS requirement (7.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Common Error ships an update every 35 months, Attend Class every 2 months. The most recent releases landed on October 5, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Common Error | Attend Class |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 2 months** |
| Size | 7 MB | 65 MB |
| Requires iOS | **7.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Le Thi Quynh Ny](https://appshunter.io/developer/1321764676) | [JOHN OLUSEGUN ADEYEMO](https://appshunter.io/developer/1863708238) |

## What reviewers say

### Common Error

[App page](https://appshunter.io/ios/app/common-error/id1224350614)

**Features:** macOS Compatibility

**In-app purchases:** none


### Attend Class

[App page](https://appshunter.io/ios/app/attend-class/id6760977375)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Common Error free?

Common Error is free to download, with no in-app purchases.

### Is Attend Class free?

Attend Class is free to download, with no in-app purchases.

### Do Common Error or Attend Class have ads?

Neither Common Error nor Attend Class shows ads.

### Which is updated more often, Common Error or Attend Class?

Common Error ships an update every 35 months, and Attend Class every 2 months. Most recently, Common Error was updated on October 5, 2026 and Attend Class on October 4, 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.*