# 理性くんと感情ちゃん vs そなえAI

The clearest difference is in-app purchases: 理性くんと感情ちゃん at none against そなえAI's 2. そなえAI's advantage is ads (none vs shown) and update cadence (weekly vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. そなえAI sells 2 in-app purchases, starting at $2.99 per month. 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, そなえAI weekly. The most recent releases landed on September 8, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | 理性くんと感情ちゃん | そなえAI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 46 MB | 69 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Tomoya Seki](https://appshunter.io/developer/1832218107) | [HitC Inc.](https://appshunter.io/developer/1894552503) |

## 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


### そなえAI

[App page](https://appshunter.io/ios/app/ai/id6788587096)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| そなえ Plus | $2.99 | per month |
| そなえPro | $11.99 | per month |


## 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 そなえAI free?

そなえAI is free to download, with in-app purchases available.

### Do 理性くんと感情ちゃん or そなえAI have ads?

理性くんと感情ちゃん shows ads; そなえAI does not.

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

理性くんと感情ちゃん ships an update every 3 weeks, and そなえAI weekly. Most recently, 理性くんと感情ちゃん was updated on September 8, 2026 and そなえAI on September 13, 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.*