# TwoDaysAgo Diary vs 理性くんと感情ちゃん

The clearest difference is in-app purchases: 理性くんと感情ちゃん at none against TwoDaysAgo Diary's 2. TwoDaysAgo Diary'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. TwoDaysAgo Diary sells 2 one-off in-app purchases. 理性くんと感情ちゃん asks for nothing beyond the download.

TwoDaysAgo Diary ships an update weekly, 理性くんと感情ちゃん every 3 weeks. The most recent releases landed on October 27, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | TwoDaysAgo Diary | 理性くんと感情ちゃん |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | — | Ad-supported |
| Size | 4 MB | 46 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nishida Hirofumi](https://appshunter.io/developer/1635697535) | [Tomoya Seki](https://appshunter.io/developer/1832218107) |

## What reviewers say

### TwoDaysAgo Diary

[App page](https://appshunter.io/ios/app/twodaysago-diary-for-memory/id1644008112)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReadQuotes | $1.99 | one-time |
| Daily Question | $2.99 | one-time |


### 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


## Frequently asked questions

### Is TwoDaysAgo Diary free?

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

### 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.

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

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

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

TwoDaysAgo Diary ships an update weekly, and 理性くんと感情ちゃん every 3 weeks. Most recently, TwoDaysAgo Diary was updated on October 27, 2026 and 理性くんと感情ちゃん on October 10, 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.*