# いつどこ本棚 vs READBASE (リードベース)

The clearest difference is in-app purchases: いつどこ本棚 at none against READBASE (リードベース)'s 4. いつどこ本棚 also leads on ads (none vs shown). READBASE (リードベース)'s advantage is iOS requirement (15.0 vs 17.4). On price and device support there is nothing between them.

Both are free to download. READBASE (リードベース) sells 4 in-app purchases, starting at $3.99 per month. いつどこ本棚 asks for nothing beyond the download.

## The numbers

| Metric | いつどこ本棚 | READBASE (リードベース) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 3 days |
| Size | 9 MB | 52 MB |
| Requires iOS | 17.4 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [shota yoshida](https://appshunter.io/developer/1593575738) | [kaito kotaka](https://appshunter.io/developer/1848780372) |

## What reviewers say

### いつどこ本棚

[App page](https://appshunter.io/ios/app/id6745746972)

**Features:** macOS Compatibility

**In-app purchases:** none


### READBASE (リードベース)

[App page](https://appshunter.io/ios/app/readbase/id6754545629)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| gem3 | $0.99 | one-time |
| gem5 | $2.99 | one-time |
| gem30 | $6.99 | one-time |


## Frequently asked questions

### Is いつどこ本棚 free?

いつどこ本棚 is free to download, with no in-app purchases.

### Is READBASE (リードベース) free?

READBASE (リードベース) is free to download, with in-app purchases available.

### Do いつどこ本棚 or READBASE (リードベース) have ads?

READBASE (リードベース) shows ads; いつどこ本棚 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.*