# 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 ads (none vs shown) and update cadence (every 5 days vs every 2 months). On price 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 October 12, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Learn CSS | Otum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/learn-css-styling-and-flexbox/id6757161168/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **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 | [Nagy Solaiman](https://appshunter.io/developer/6809016106) | [He LiNien](https://appshunter.io/developer/6776889501) |

## What reviewers say

### Learn CSS

[App page](https://appshunter.io/ios/app/learn-css-styling-and-flexbox/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, Vision Pro support

**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?

Learn CSS shows ads; Otum does not.

### 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 October 12, 2026 and Otum on September 30, 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.*