# Learn ErLang | ErLangBook vs Ohmie

The clearest difference is price: Ohmie at Free against Learn ErLang | ErLangBook's $1.99. Ohmie also leads on chart position (#129 vs unranked). Learn ErLang | ErLangBook's advantage is in-app purchases (none vs 4) and ads (none vs shown). On device support there is nothing between them.

Ohmie is free to download; Learn ErLang | ErLangBook costs $1.99 up front. Ohmie sells 4 in-app purchases, starting at $7.99 per month. Learn ErLang | ErLangBook asks for nothing beyond the download.

## The numbers

| Metric | Learn ErLang | ErLangBook | Ohmie |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.5 (247 ratings)](https://appshunter.io/ios/app/ohmie-learn-electronics/id6779694265/reviews)** |
| Number of ratings | — | **247** |
| Positive reviews | — | 56.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 days |
| Monetization | — | Freemium |
| Best chart rank | — | **#129** |
| Size | 41 MB | 731 MB |
| Requires iOS | **13.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Muhammad Umair](https://appshunter.io/developer/1696049320) | [OHMIE LLC](https://appshunter.io/developer/1889012870) |

## What reviewers say

### Learn ErLang | ErLangBook

[App page](https://appshunter.io/ios/app/learn-erlang-erlangbook/id6754662195)

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

**In-app purchases:** none


### Ohmie

[App page](https://appshunter.io/ios/app/ohmie-learn-electronics/id6779694265)

**Currently charting:** #129 Top Grossing · Education (US App Store)

Learn electronics through engaging, game-like lessons and interactive circuit simulations. Master concepts from basic circuits to embedded systems and robotics with bite-sized daily practice. Progress is tracked on your device with no ads or accounts required.

**Highlights:** Live circuit simulations, Build schematics with real components, Interactive problem-solving lessons, Covers circuits, op-amps, embedded systems, and robotics, Gamified learning with XP and streaks, Progress saved locally, no account needed, Ad-free and tracking-free experience

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ohmie Pro | $7.99 | per month |
| Ohmie Pro Yearly Saver | $19.99 | per year |
| Ohmie Pro | $29.99 | per year |
| Ohmie Pro Annual | $29.99 | per year |


## Frequently asked questions

### Is Learn ErLang | ErLangBook free?

Learn ErLang | ErLangBook costs $1.99, with no in-app purchases.

### Is Ohmie free?

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

### Do Learn ErLang | ErLangBook or Ohmie have ads?

Ohmie shows ads; Learn ErLang | ErLangBook does not.

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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.*