# 買取チェッカー vs Kotodute

The clearest difference is in-app purchases: 買取チェッカー at none against Kotodute's 1. 買取チェッカー also leads on iOS requirement (16.4 vs 18.0). Kotodute's advantage is ads (none vs shown) and update cadence (every 2 weeks vs monthly). On price and device support there is nothing between them.

Both are free to download. Kotodute sells 1 one-off in-app purchase. 買取チェッカー asks for nothing beyond the download.

買取チェッカー ships an update monthly, Kotodute every 2 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 買取チェッカー | Kotodute |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 88 MB | 12 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [YKP, KK](https://appshunter.io/developer/1823145946) | [Toshinori Matsui](https://appshunter.io/developer/1870057546) |

## What reviewers say

### 買取チェッカー

[App page](https://appshunter.io/ios/app/id6747867555)

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

**In-app purchases:** none


### Kotodute

[App page](https://appshunter.io/ios/app/kotodute/id6790640785)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kotodute Premium | $5.99 | one-time |


## Frequently asked questions

### Is 買取チェッカー free?

買取チェッカー is free to download, with no in-app purchases.

### Is Kotodute free?

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

### Do 買取チェッカー or Kotodute have ads?

買取チェッカー shows ads; Kotodute does not.

### Which is updated more often, 買取チェッカー or Kotodute?

買取チェッカー ships an update monthly, and Kotodute every 2 weeks. Most recently, 買取チェッカー was updated on October 30, 2026 and Kotodute on October 31, 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.*