# 理性くんと感情ちゃん vs 墨呪

The clearest difference is in-app purchases: 理性くんと感情ちゃん at none against 墨呪's 2. 理性くんと感情ちゃん also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (15.1 vs 26.2). 墨呪's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. 墨呪 sells 2 one-off in-app purchases. 理性くんと感情ちゃん asks for nothing beyond the download.

理性くんと感情ちゃん ships an update every 3 weeks, 墨呪 every 2 months. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 理性くんと感情ちゃん | 墨呪 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 46 MB | 30 MB |
| Requires iOS | **15.1** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tomoya Seki](https://appshunter.io/developer/1832218107) | [nana sashihara](https://appshunter.io/developer/1807202686) |

## What reviewers say

### 理性くんと感情ちゃん

[App page](https://appshunter.io/ios/app/ai/id6755962338)

This app offers two AI characters, one logical and one emotional, to provide advice from different perspectives. Engage in natural conversations through a group chat interface and get unique insights from occasional surprise characters. It's designed to help users sort through their feelings and make life decisions.

**Highlights:** Dual AI perspectives (logical and emotional), Group chat interface, Mention feature for specific AI responses, Surprise character interactions, Personalized advice for life decisions, Self-understanding and new perspectives

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

**In-app purchases:** none


### 墨呪

[App page](https://appshunter.io/ios/app/id6761622741)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shikishi Size Unlock | $0.49 | one-time |
| JofukuSizeUnlock | $0.49 | one-time |


## Frequently asked questions

### Is 理性くんと感情ちゃん free?

理性くんと感情ちゃん is free to download, with no in-app purchases.

### Is 墨呪 free?

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

### Do 理性くんと感情ちゃん or 墨呪 have ads?

理性くんと感情ちゃん shows ads; 墨呪 does not.

### Which is updated more often, 理性くんと感情ちゃん or 墨呪?

理性くんと感情ちゃん ships an update every 3 weeks, and 墨呪 every 2 months. Most recently, 理性くんと感情ちゃん was updated on October 10, 2026 and 墨呪 on October 7, 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.*