# AI vs CertLab

The clearest difference is in-app purchases: CertLab at none against AI's 7. CertLab also leads on update cadence (every 2 days vs every 6 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AI sells 7 in-app purchases, starting at $6.99 per month. CertLab asks for nothing beyond the download.

AI ships an update every 6 days, 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 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai-901-practice-test/id6761488763/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 42 MB | 38 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Baric](https://appshunter.io/developer/1872894014) | [Tenzin Negoen](https://appshunter.io/developer/1879033025) |

## What reviewers say

### AI

[App page](https://appshunter.io/ios/app/ai-901-practice-test/id6761488763)

Prepare for the Microsoft Azure AI Fundamentals (AI-901) exam with focused mobile practice. Target weak areas, review explanations, and track your progress with timed sessions. This app offers a comprehensive study flow with a large question bank and detailed progress tracking.

**Highlights:** Daily AI-901 questions, Target weakest domains, Review explanations, Track exam readiness, Timed practice sessions, Large rotating question bank

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Microsoft Access | $6.99 | per month |
| Azure Career Pro | $9.99 | per month |
| AI-901 Pro | $2.99 | one-time |
| AI-901 Pro | $4.99 | one-time |
| Azure AI Bundle | $9.99 | one-time |
| Azure Bundle | $9.99 | one-time |
| Microsoft AI Bundle | $9.99 | 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?

Neither AI nor CertLab shows ads.

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

AI ships an update every 6 days, 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.*