# 一問から身につく SQL vs CodeFlash

The clearest difference is in-app purchases: 一問から身につく SQL at none against CodeFlash's 1. CodeFlash's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.6). On price and ads there is nothing between them.

Both are free to download. CodeFlash sells 1 one-off in-app purchase. 一問から身につく SQL asks for nothing beyond the download.

## The numbers

| Metric | 一問から身につく SQL | CodeFlash |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 1 MB | 39 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RYUJI ADACHI](https://appshunter.io/developer/1877885263) | [JUN NISHIMOTO](https://appshunter.io/developer/1888076901) |

## What reviewers say

### 一問から身につく SQL

[App page](https://appshunter.io/ios/app/sql/id6760984838)

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

**In-app purchases:** none


### CodeFlash

[App page](https://appshunter.io/ios/app/codeflash-runnable-code-cards/id6761161171)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CodeFlash Pro | $9.99 | one-time |


## Frequently asked questions

### Is 一問から身につく SQL free?

一問から身につく SQL is free to download, with no in-app purchases.

### Is CodeFlash free?

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

### Do 一問から身につく SQL or CodeFlash have ads?

Neither 一問から身につく SQL nor CodeFlash 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.*