# SQLDOU vs Learn SQL

The clearest difference is in-app purchases: Learn SQL at none against SQLDOU's 1. Learn SQL also leads on ads (none vs shown) and update cadence (every 5 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. SQLDOU sells 1 one-off in-app purchase. Learn SQL asks for nothing beyond the download.

SQLDOU ships an update every 3 weeks, Learn SQL every 5 days. The most recent releases landed on September 18, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | SQLDOU | Learn SQL |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 10 MB | 30 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fuji Bit Inc.](https://appshunter.io/developer/1874205957) | [Osamu Nishiyama](https://appshunter.io/developer/1444747231) |

## What reviewers say

### SQLDOU

[App page](https://appshunter.io/ios/app/sqldou/id6760616192)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SQLDOU Pro | $5.99 | one-time |


### Learn SQL

[App page](https://appshunter.io/ios/app/learn-sql-let-us-sql/id6777298710)

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

**In-app purchases:** none


## Frequently asked questions

### Is SQLDOU free?

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

### Is Learn SQL free?

Learn SQL is free to download, with no in-app purchases.

### Do SQLDOU or Learn SQL have ads?

SQLDOU shows ads; Learn SQL does not.

### Which is updated more often, SQLDOU or Learn SQL?

SQLDOU ships an update every 3 weeks, and Learn SQL every 5 days. Most recently, SQLDOU was updated on September 18, 2026 and Learn SQL on September 6, 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.*