# Machine Learning Engineer Exam vs PDE Data Engineer Exam Prep

The clearest difference is in-app purchases: PDE Data Engineer Exam Prep at none against Machine Learning Engineer Exam's 1. PDE Data Engineer Exam Prep also leads on update cadence (every 3 months vs every 28 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Machine Learning Engineer Exam sells 1 one-off in-app purchase. PDE Data Engineer Exam Prep asks for nothing beyond the download.

Machine Learning Engineer Exam ships an update every 28 months, PDE Data Engineer Exam Prep every 3 months. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Machine Learning Engineer Exam | PDE Data Engineer Exam Prep |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 1 MB | 27 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DjamgaTech Corp](https://appshunter.io/developer/969000181) | [Davy Raitt](https://appshunter.io/developer/1795318281) |

## What reviewers say

### Machine Learning Engineer Exam

[App page](https://appshunter.io/ios/app/machine-learning-engineer-exam/id1611598797)

Prepare for the GCP Professional Machine Learning Engineer certification with comprehensive quizzes and practice exams. Master ML concepts on GCP, from data preparation to model deployment and operations. Includes cheat sheets and interview questions.

**Highlights:** Hundreds of quizzes and practice exams, Covers ML on GCP topics, Machine Learning Basics and Advanced, Cheat sheets and interview questions, Latest ML news, Scorecard and countdown timer

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Question Bank | $9.99 | one-time |


### PDE Data Engineer Exam Prep

[App page](https://appshunter.io/ios/app/pde-data-engineer-exam-prep/id6757119609)

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

**In-app purchases:** none


## Frequently asked questions

### Is Machine Learning Engineer Exam free?

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

### Is PDE Data Engineer Exam Prep free?

PDE Data Engineer Exam Prep is free to download, with no in-app purchases.

### Do Machine Learning Engineer Exam or PDE Data Engineer Exam Prep have ads?

Neither Machine Learning Engineer Exam nor PDE Data Engineer Exam Prep shows ads.

### Which is updated more often, Machine Learning Engineer Exam or PDE Data Engineer Exam Prep?

Machine Learning Engineer Exam ships an update every 28 months, and PDE Data Engineer Exam Prep every 3 months. Most recently, Machine Learning Engineer Exam was updated on November 7, 2026 and PDE Data Engineer Exam Prep on October 31, 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.*