# PenPal Letters vs MainWRLD

The clearest difference is rating: MainWRLD at 5.0 against PenPal Letters's 4.5. MainWRLD also leads on update cadence (every 4 days vs every 9 days). PenPal Letters's advantage is ratings volume (130 vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. PenPal Letters sells 3 one-off in-app purchases and MainWRLD sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

MainWRLD holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: PenPal Letters has 130 ratings behind it against 3, so its average is the more settled of the two.

PenPal Letters ships an update every 9 days, MainWRLD every 4 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | PenPal Letters | MainWRLD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (130 ratings)](https://appshunter.io/ios/app/penpal-letters-dearstranger/id1601683943/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/mainwrld/id6780999607/reviews)** |
| Number of ratings | **130** | 3 |
| Positive reviews | 68.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 58 MB | 90 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Dinu Devarajan](https://appshunter.io/developer/1601683945) | [Fried Mermaid LLC](https://appshunter.io/developer/6780999609) |

## What reviewers say

### PenPal Letters

[App page](https://appshunter.io/ios/app/penpal-letters-dearstranger/id1601683943)

Connect with people globally by anonymously sharing your daily experiences through digital postcards. Discover and follow others who resonate with your posts, fostering new friendships and a sense of community without fear of judgment.

**Highlights:** Write daily postcards, Read others' postcards, Anonymous sharing, Follow users, Exchange postcards, Make global friends

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Coins | $2.99 | one-time |
| 250 Coins | $4.99 | one-time |
| 500 Coins | $9.99 | one-time |


### MainWRLD

[App page](https://appshunter.io/ios/app/mainwrld/id6780999607)

This app is a social platform for book lovers and storytellers. Users can publish and sell their own books, discover new stories, and connect with a global community of readers and writers. It features customizable 3D avatars and rewards for community engagement.

**Highlights:** Publish and sell books, Discover new authors and stories, Connect with readers and writers, Create and customize 3D avatars, Earn points for engagement, Unlock avatar items and book discounts

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Tokens | $10.00 | one-time |
| 20 Tokens | $20.00 | one-time |
| 30 Tokens | $30.00 | one-time |
| 50 Tokens | $50.00 | one-time |


## Frequently asked questions

### Is PenPal Letters free?

PenPal Letters is free to download, with in-app purchases available.

### Is MainWRLD free?

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

### Which has better reviews, PenPal Letters or MainWRLD?

MainWRLD is rated higher. PenPal Letters averages 4.5 out of 5 from 130 ratings, while MainWRLD averages 5.0 from 3 ratings.

### Do PenPal Letters or MainWRLD have ads?

Neither PenPal Letters nor MainWRLD shows ads.

### Which is updated more often, PenPal Letters or MainWRLD?

PenPal Letters ships an update every 9 days, and MainWRLD every 4 days. Most recently, PenPal Letters was updated on October 16, 2026 and MainWRLD on October 7, 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.*