# AI vs CertLab

The clearest difference is in-app purchases: CertLab at none against AI's 3. CertLab also leads on ads (none vs shown) and update cadence (every 2 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. AI sells 3 one-off in-app purchases. CertLab asks for nothing beyond the download.

AI ships an update every 3 weeks, CertLab every 2 days. The most recent releases landed on October 10, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | AI | CertLab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 184 MB | 38 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [合同会社HopStep](https://appshunter.io/developer/1749721044) | [Tenzin Negoen](https://appshunter.io/developer/1879033025) |

## What reviewers say

### AI

[App page](https://appshunter.io/ios/app/ai-901-study-and-practice/id6759863242)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Complete Pack - Sale | $5.99 | one-time |
| Complete Pack | $9.99 | one-time |
| Lifetime Premium | $11.99 | one-time |


### CertLab

[App page](https://appshunter.io/ios/app/certlab/id6785120117)

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

**In-app purchases:** none


## Frequently asked questions

### Is AI free?

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

### Is CertLab free?

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

### Do AI or CertLab have ads?

AI shows ads; CertLab does not.

### Which is updated more often, AI or CertLab?

AI ships an update every 3 weeks, and CertLab every 2 days. Most recently, AI was updated on October 10, 2026 and CertLab 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.*