# 川島石油 vs 作家サーチ by つきや書店・バースブック珈琲

The clearest difference is update cadence: 作家サーチ by つきや書店・バースブック珈琲 at every 18 months against 川島石油's every 37 months. 川島石油's advantage is iOS requirement (14.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

川島石油 ships an update every 37 months, 作家サーチ by つきや書店・バースブック珈琲 every 18 months. The most recent releases landed on September 16, 2026 and January 30, 2026 respectively.

## The numbers

| Metric | 川島石油 | 作家サーチ by つきや書店・バースブック珈琲 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 18 months** |
| Size | 85 MB | 12 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KAWASHIMA OIL CO., LTD.](https://appshunter.io/developer/1484598639) | [MINATO KOGYO K.K.](https://appshunter.io/developer/1650167149) |

## What reviewers say

### 川島石油

[App page](https://appshunter.io/ios/app/id1484598640)

**In-app purchases:** none


### 作家サーチ by つきや書店・バースブック珈琲

[App page](https://appshunter.io/ios/app/by/id6443870220)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 川島石油 free?

川島石油 is free to download, with no in-app purchases.

### Is 作家サーチ by つきや書店・バースブック珈琲 free?

作家サーチ by つきや書店・バースブック珈琲 is free to download, with no in-app purchases.

### Do 川島石油 or 作家サーチ by つきや書店・バースブック珈琲 have ads?

Neither 川島石油 nor 作家サーチ by つきや書店・バースブック珈琲 shows ads.

### Which is updated more often, 川島石油 or 作家サーチ by つきや書店・バースブック珈琲?

川島石油 ships an update every 37 months, and 作家サーチ by つきや書店・バースブック珈琲 every 18 months. Most recently, 川島石油 was updated on September 16, 2026 and 作家サーチ by つきや書店・バースブック珈琲 on January 30, 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.*