# OSS vs 一問から身につく SQL

The clearest difference is price: 一問から身につく SQL at Free against OSS's $3.99. OSS's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.6). On ads and in-app purchases there is nothing between them.

一問から身につく SQL is free to download; OSS costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | OSS | 一問から身につく SQL |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | — |
| Size | 44 MB | 1 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Daisuke Matsubara](https://appshunter.io/developer/1720755722) | [RYUJI ADACHI](https://appshunter.io/developer/1877885263) |

## What reviewers say

### OSS

[App page](https://appshunter.io/ios/app/oss-db-silver/id6745166641)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is OSS free?

OSS costs $3.99, with no in-app purchases.

### 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.

### Do OSS or 一問から身につく SQL have ads?

Neither OSS nor 一問から身につく SQL 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.*