# 理性くんと感情ちゃん vs Profful

The clearest difference is ads: Profful at none against 理性くんと感情ちゃん's shown. 理性くんと感情ちゃん's advantage is iOS requirement (15.1 vs 18.2). On price, update cadence, 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.

理性くんと感情ちゃん ships an update every 3 weeks, Profful monthly. The most recent releases landed on September 8, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | 理性くんと感情ちゃん | Profful |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Ad-supported | — |
| Size | 46 MB | 22 MB |
| Requires iOS | **15.1** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tomoya Seki](https://appshunter.io/developer/1832218107) | [Fuma Matsuno](https://appshunter.io/developer/1559248689) |

## 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


### Profful

[App page](https://appshunter.io/ios/app/profful/id6757071720)

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

**In-app purchases:** none


## 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 Profful free?

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

### Do 理性くんと感情ちゃん or Profful have ads?

理性くんと感情ちゃん shows ads; Profful does not.

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

理性くんと感情ちゃん ships an update every 3 weeks, and Profful monthly. Most recently, 理性くんと感情ちゃん was updated on September 8, 2026 and Profful on September 14, 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.*