# Professional Data Engineer vs Data Engineer Pro Prep

The clearest difference is update cadence: Data Engineer Pro Prep at every 3 weeks against Professional Data Engineer's every 13 months. Data Engineer Pro Prep also leads on device support (4 vs 2). Professional Data Engineer's advantage is iOS requirement (10.0 vs 13.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Professional Data Engineer sells 1 one-off in-app purchase and Data Engineer Pro Prep sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Professional Data Engineer ships an update every 13 months, Data Engineer Pro Prep every 3 weeks. The most recent releases landed on September 6, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Professional Data Engineer | Data Engineer Pro Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 weeks** |
| Size | 25 MB | 86 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Trieu Tran](https://appshunter.io/developer/1668827865) | [AITYTECH](https://appshunter.io/developer/1885549185) |

## What reviewers say

### Professional Data Engineer

[App page](https://appshunter.io/ios/app/professional-data-engineer/id6473723698)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock complete App | $9.99 | one-time |


### Data Engineer Pro Prep

[App page](https://appshunter.io/ios/app/data-engineer-pro-prep/id6762125643)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Lifetime | $3.99 | one-time |


## Frequently asked questions

### Is Professional Data Engineer free?

Professional Data Engineer is free to download, with in-app purchases available.

### Is Data Engineer Pro Prep free?

Data Engineer Pro Prep is free to download, with in-app purchases available.

### Do Professional Data Engineer or Data Engineer Pro Prep have ads?

Neither Professional Data Engineer nor Data Engineer Pro Prep shows ads.

### Which is updated more often, Professional Data Engineer or Data Engineer Pro Prep?

Professional Data Engineer ships an update every 13 months, and Data Engineer Pro Prep every 3 weeks. Most recently, Professional Data Engineer was updated on September 6, 2026 and Data Engineer Pro Prep on September 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*