# Astropédia vs Dev Mastery

The clearest difference is in-app purchases: Astropédia at none against Dev Mastery's 1. Astropédia also leads on ads (none vs shown) and iOS requirement (14.0 vs 17.0). Dev Mastery's advantage is update cadence (every 4 days vs every 10 days). On price and device support there is nothing between them.

Both are free to download. Dev Mastery sells 1 in-app purchase, starting at $8.99 per month. Astropédia asks for nothing beyond the download.

Astropédia ships an update every 10 days, Dev Mastery every 4 days. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Astropédia | Dev Mastery |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 4 days** |
| Size | 53 MB | 10 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yves Charpentier](https://appshunter.io/developer/1654705165) | [Sofyan Zarouri](https://appshunter.io/developer/1676972328) |

## What reviewers say

### Astropédia

[App page](https://appshunter.io/ios/app/astropedia/id1668668756)

**Features:** macOS Compatibility

**In-app purchases:** none


### Dev Mastery

[App page](https://appshunter.io/ios/app/dev-mastery/id6759505533)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Mensuel | $8.99 | per month |


## Frequently asked questions

### Is Astropédia free?

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

### Is Dev Mastery free?

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

### Do Astropédia or Dev Mastery have ads?

Dev Mastery shows ads; Astropédia does not.

### Which is updated more often, Astropédia or Dev Mastery?

Astropédia ships an update every 10 days, and Dev Mastery every 4 days. Most recently, Astropédia was updated on September 21, 2026 and Dev Mastery on September 9, 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.*