# Data Engineer Pro Prep vs SQLlearn

The clearest difference is iOS requirement: Data Engineer Pro Prep at 13.0 against SQLlearn's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | Data Engineer Pro Prep | SQLlearn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 86 MB | 9 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AITYTECH](https://appshunter.io/developer/1885549185) | [Eduardo Moura](https://appshunter.io/developer/1894038718) |

## What reviewers say

### 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 |


### SQLlearn

[App page](https://appshunter.io/ios/app/sqllearn/id6762401475)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro | $4.99 | one-time |


## Frequently asked questions

### Is Data Engineer Pro Prep free?

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

### Is SQLlearn free?

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

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

Neither Data Engineer Pro Prep nor SQLlearn shows ads.

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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.*