# 연애의 과학 vs 2人の相思相愛診断

The clearest difference is in-app purchases: 2人の相思相愛診断 at none against 연애의 과학's 6. 2人の相思相愛診断 also leads on update cadence (every 8 days vs every 5 weeks). 연애의 과학's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 연애의 과학 sells 6 one-off in-app purchases. 2人の相思相愛診断 asks for nothing beyond the download.

연애의 과학 ships an update every 5 weeks, 2人の相思相愛診断 every 8 days. The most recent releases landed on September 27, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | 연애의 과학 | 2人の相思相愛診断 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.1 (54 ratings)](https://appshunter.io/ios/app/id1108026487/reviews)** | — |
| Number of ratings | **54** | — |
| Positive reviews | 23.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 19 MB |
| Requires iOS | 13.4 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Scatter Lab, Inc.](https://appshunter.io/developer/599214190) | [Atsushi Isai](https://appshunter.io/developer/1881655484) |

## What reviewers say

### 연애의 과학

[App page](https://appshunter.io/ios/app/id1108026487)

This app offers science-based dating advice and psychological tests. Analyze KakaoTalk conversations to understand relationship dynamics and discover your partner's true feelings. It provides expert insights beyond horoscopes and fortune-telling.

**Highlights:** Psychology-based dating tips, KakaoTalk conversation analysis, Scientific psychological tests, Relationship insight tools, Expert dating advice

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 코인 20개 | $1.99 | one-time |
| 코인 50개 | $4.99 | one-time |
| 코인 100개 + 보너스 10개 | $9.99 | one-time |
| 코인 300개 + 보너스 60개 | $29.99 | one-time |
| 코인 500개 + 보너스 200개 | $49.99 | one-time |
| 코인 1000개 + 보너스 500개 | $99.99 | one-time |

**What reviewers like**

- 💕 Useful information and relatable content
- 🎉 Enjoyable and entertaining app
- 🧠 Provides insightful psychological analysis

**What reviewers complain about**

- 🤑 Expensive paid features
- 🔒 Concerns about data privacy and usage
- 🐛 Technical issues like crashes and login problems

**Reported bugs**

- Sudden app crashes
- Login and authentication problems
- Paid features not working as expected

**Requested features**

- Add support for more chat platforms (e.g. WhatsApp, Viber)
- Improve free coin earning system
- Provide more free content options


### 2人の相思相愛診断

[App page](https://appshunter.io/ios/app/2/id6767064328)

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

**In-app purchases:** none


## Frequently asked questions

### Is 연애의 과학 free?

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

### Is 2人の相思相愛診断 free?

2人の相思相愛診断 is free to download, with no in-app purchases.

### Do 연애의 과학 or 2人の相思相愛診断 have ads?

2人の相思相愛診断 shows ads; 연애의 과학 does not.

### Which is updated more often, 연애의 과학 or 2人の相思相愛診断?

연애의 과학 ships an update every 5 weeks, and 2人の相思相愛診断 every 8 days. Most recently, 연애의 과학 was updated on September 27, 2026 and 2人の相思相愛診断 on September 19, 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.*