# 16 vs Kotoduke

The clearest difference is in-app purchases: Kotoduke at none against 16's 1. Kotoduke also leads on ads (none vs shown) and update cadence (every 4 days vs every 9 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 16 sells 1 one-off in-app purchase. Kotoduke asks for nothing beyond the download.

16 ships an update every 9 days, Kotoduke every 4 days. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 16 | Kotoduke |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Every 4 days** |
| Size | 41 MB | 30 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sho Iwasaki](https://appshunter.io/developer/1896559280) | [MAMORU ISHII](https://appshunter.io/developer/1896684250) |

## What reviewers say

### 16

[App page](https://appshunter.io/ios/app/16-type-personality-manual/id6768309262)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### Kotoduke

[App page](https://appshunter.io/ios/app/kotoduke/id6780195686)

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

**In-app purchases:** none


## Frequently asked questions

### Is 16 free?

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

### Is Kotoduke free?

Kotoduke is free to download, with no in-app purchases.

### Do 16 or Kotoduke have ads?

16 shows ads; Kotoduke does not.

### Which is updated more often, 16 or Kotoduke?

16 ships an update every 9 days, and Kotoduke every 4 days. Most recently, 16 was updated on October 31, 2026 and Kotoduke on October 28, 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.*