# Certification Prep Pro vs GH

The clearest difference is in-app purchases: Certification Prep Pro at none against GH's 1. GH's advantage is update cadence (every 3 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. GH sells 1 one-off in-app purchase. Certification Prep Pro asks for nothing beyond the download.

Certification Prep Pro ships an update every 2 months, GH every 3 days. The most recent releases landed on September 6, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Certification Prep Pro | GH |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 17 MB | 9 MB |
| Requires iOS | **17.5** | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Coffeedevs LLC](https://appshunter.io/developer/1793357959) | [Atsuhiro Inoue](https://appshunter.io/developer/1871193294) |

## What reviewers say

### Certification Prep Pro

[App page](https://appshunter.io/ios/app/certification-prep-pro/id6741158449)

**Features:** macOS Compatibility

**In-app purchases:** none


### GH

[App page](https://appshunter.io/ios/app/gh-900-github-foundations/id6781444869)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Questions | $12.99 | one-time |


## Frequently asked questions

### Is Certification Prep Pro free?

Certification Prep Pro is free to download, with no in-app purchases.

### Is GH free?

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

### Do Certification Prep Pro or GH have ads?

Neither Certification Prep Pro nor GH shows ads.

### Which is updated more often, Certification Prep Pro or GH?

Certification Prep Pro ships an update every 2 months, and GH every 3 days. Most recently, Certification Prep Pro was updated on September 6, 2026 and GH on September 19, 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.*