# 一問から身につく SQL vs Chain Store Vocab

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

Both are free to download. Chain Store Vocab sells 3 in-app purchases, starting at $0.99 per 7 days. 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 | Chain Store Vocab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 months |
| Size | 1 MB | 82 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RYUJI ADACHI](https://appshunter.io/developer/1877885263) | [Creatopia Inc.](https://appshunter.io/developer/1523447963) |

## 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


### Chain Store Vocab

[App page](https://appshunter.io/ios/app/chain-store-vocab/id6761074654)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Weekly) | $0.99 | per 7 days |
| Premium (Monthly) | $2.99 | per month |
| Premium (Yearly) | $24.99 | per year |


## 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 Chain Store Vocab free?

Chain Store Vocab is free to download, with in-app purchases available.

### Do 一問から身につく SQL or Chain Store Vocab have ads?

Chain Store Vocab shows ads; 一問から身につく SQL does not.

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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.*