# Ace SQL Interviews vs DevPrep

The clearest difference is iOS requirement: DevPrep at 13.0 against Ace SQL Interviews's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Ace SQL Interviews sells 2 one-off in-app purchases and DevPrep sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Ace SQL Interviews | DevPrep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 22 MB | 25 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sandyarani Lagishetti](https://appshunter.io/developer/1723755550) | [Shohruxbek Atavullayev](https://appshunter.io/developer/1859528937) |

## What reviewers say

### Ace SQL Interviews

[App page](https://appshunter.io/ios/app/ace-sql-interviews/id6477198989)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Unlimited SQL Ace | $14.99 | one-time |
| Unlock All Questions & Answers | $19.99 | one-time |


### DevPrep

[App page](https://appshunter.io/ios/app/devprep-coding-interview-prep/id6775566429)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Dart | $12.99 | one-time |
| Unlock JavaScript | $12.99 | one-time |
| Unlock Python | $12.99 | one-time |
| Unlock Swift | $12.99 | one-time |


## Frequently asked questions

### Is Ace SQL Interviews free?

Ace SQL Interviews is free to download, with in-app purchases available.

### Is DevPrep free?

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

### Do Ace SQL Interviews or DevPrep have ads?

Neither Ace SQL Interviews nor DevPrep 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.*