# NumTest vs Machine Learning Engineer Prep

The clearest difference is update cadence: Machine Learning Engineer Prep at every 10 days against NumTest's every 11 months. Machine Learning Engineer Prep also leads on iOS requirement (15.1 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. NumTest sells 1 one-off in-app purchase and Machine Learning Engineer Prep sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

NumTest ships an update every 11 months, Machine Learning Engineer Prep every 10 days. The most recent releases landed on November 8, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | NumTest | Machine Learning Engineer Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 10 days** |
| Size | 4 MB | 138 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Hadush](https://appshunter.io/developer/1769824626) | [CHOI SEONGMIN](https://appshunter.io/developer/6772332527) |

## What reviewers say

### NumTest

[App page](https://appshunter.io/ios/app/numtest/id6705136328)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| buyfile | $0.99 | one-time |


### Machine Learning Engineer Prep

[App page](https://appshunter.io/ios/app/machine-learning-engineer-prep/id6785744238)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GCP ML Engineer 추가 구매 할인 | $2.49 | one-time |
| ML Associate 추가 구매 할인 | $2.49 | one-time |
| ML Professional 추가 구매 할인 | $2.49 | one-time |
| ML Associate 평생 이용권 | $4.99 | one-time |
| ML Professional 평생 이용권 | $4.99 | one-time |
| Lifetime Access | $4.99 | one-time |


## Frequently asked questions

### Is NumTest free?

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

### Is Machine Learning Engineer Prep free?

Machine Learning Engineer Prep is free to download, with in-app purchases available.

### Do NumTest or Machine Learning Engineer Prep have ads?

Neither NumTest nor Machine Learning Engineer Prep shows ads.

### Which is updated more often, NumTest or Machine Learning Engineer Prep?

NumTest ships an update every 11 months, and Machine Learning Engineer Prep every 10 days. Most recently, NumTest was updated on November 8, 2026 and Machine Learning Engineer Prep on November 13, 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.*