# Psyda 사이다 vs 펜팔, 편지 친구

The clearest difference is in-app purchases: 펜팔, 편지 친구 at none against Psyda 사이다's 5. 펜팔, 편지 친구 also leads on review sentiment (100% vs 86%). Psyda 사이다's advantage is update cadence (every 6 days vs fortnightly). On ads, monetization model, device support and iOS requirement there is nothing between them.

Psyda 사이다 ships an update every 6 days, 펜팔, 편지 친구 fortnightly. Both last shipped on October 28, 2026.

## The numbers

| Metric | Psyda 사이다 | 펜팔, 편지 친구 |
| --- | --- | --- |
| Price | **Free** | — |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id6770534229/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 68 MB | 7 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [PSYDA](https://appshunter.io/developer/1827522551) | [JINWOOK CHUNG](https://appshunter.io/developer/1896751459) |

## What reviewers say

### Psyda 사이다

[App page](https://appshunter.io/ios/app/psyda/id6748834897)

Discover meaningful connections through a unique psychological assessment. This app helps you understand your personality and relationship patterns to find compatible partners for healthier, more fulfilling relationships. Start your journey to self-discovery and genuine connection.

**Highlights:** Psychological personality tests, Compatibility-based matching, Relationship pattern analysis, Self-understanding tools, Secure user verification, Personalized partner recommendations

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Psyda Can | $0.49 | one-time |
| Psyda Can | $4.99 | one-time |
| Psyda Can | $12.99 | one-time |
| Psyda Can | $19.99 | one-time |
| Psyda Can | $22.99 | one-time |


### 펜팔, 편지 친구

[App page](https://appshunter.io/ios/app/id6770534229)

This app fosters deeper connections through slow communication, focusing on written messages and a 6-hour delivery time for letters. It encourages sharing daily thoughts and finding like-minded individuals in a safe, respectful environment.

**Highlights:** Daily journaling with 'Today's Writing', 6-hour delayed letter delivery, Slow, thoughtful communication, Safe and curated interactions, Connect through shared thoughts and feelings

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

**In-app purchases:** none


## Frequently asked questions

### Is Psyda 사이다 free?

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

### Is 펜팔, 편지 친구 free?

Pricing for 펜팔, 편지 친구 is not currently listed on the App Store.

### Do Psyda 사이다 or 펜팔, 편지 친구 have ads?

Neither Psyda 사이다 nor 펜팔, 편지 친구 shows ads.

### Which is updated more often, Psyda 사이다 or 펜팔, 편지 친구?

Psyda 사이다 ships an update every 6 days, and 펜팔, 편지 친구 fortnightly. Most recently, Psyda 사이다 was updated on October 28, 2026 and 펜팔, 편지 친구 on October 28, 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.*