# Learn CSS vs Otum

The clearest difference is in-app purchases: Learn CSS at none against Otum's 1. Learn CSS also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). Otum's advantage is update cadence (every 5 days vs every 2 months). On price and ads there is nothing between them.

Both are free to download. Otum sells 1 one-off in-app purchase. Learn CSS asks for nothing beyond the download.

Learn CSS ships an update every 2 months, Otum every 5 days. The most recent releases landed on September 26, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Learn CSS | Otum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/learn-css-web-design-lab/id6757161168/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 116 MB | 4 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pejoal Hanna](https://appshunter.io/developer/1848573493) | [He LiNien](https://appshunter.io/developer/6776889501) |

## What reviewers say

### Learn CSS

[App page](https://appshunter.io/ios/app/learn-css-web-design-lab/id6757161168)

Master Cascading Style Sheets with interactive lessons, a real-time code editor, and gamified challenges. Learn fundamentals, responsive design, and modern layouts to build professional web designs.

**Highlights:** Interactive CSS tutorials, Real-time code editor, Daily coding tips and quizzes, Gamified learning with XP and achievements, Professional UI mockup assets, Offline lesson access

**Features:** macOS Compatibility

**In-app purchases:** none


### Otum

[App page](https://appshunter.io/ios/app/otum/id6790628529)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Unlock · One-Time Buy | $14.99 | one-time |


## Frequently asked questions

### Is Learn CSS free?

Learn CSS is free to download, with no in-app purchases.

### Is Otum free?

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

### Do Learn CSS or Otum have ads?

Neither Learn CSS nor Otum shows ads.

### Which is updated more often, Learn CSS or Otum?

Learn CSS ships an update every 2 months, and Otum every 5 days. Most recently, Learn CSS was updated on September 26, 2026 and Otum on September 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.*