# Space Letters vs Bottle Drift World

The clearest difference is update cadence: Space Letters at daily against Bottle Drift World's every 4 months. Space Letters also leads on iOS requirement (13.0 vs 18.6). On price, ads, 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.

Space Letters ships an update daily, Bottle Drift World every 4 months. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Space Letters | Bottle Drift World |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/space-letters/id6479270951/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 4 months |
| Monetization | Ad-supported | — |
| Size | 27 MB | 23 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Paul Brecht](https://appshunter.io/developer/1620703287) | [Toru Kawaguchi](https://appshunter.io/developer/1063198642) |

## What reviewers say

### Space Letters

[App page](https://appshunter.io/ios/app/space-letters/id6479270951)

Connect with people across the galaxy through unique intergalactic letters. Ask profound questions, share jokes, or send love. Spend hours reading messages from fellow space travelers for a fun and engaging experience.

**Highlights:** Intergalactic letter writing, Connect with global users, Read messages from pen pals, Unique communication experience, Hours of engaging content

**Features:** macOS Compatibility

**In-app purchases:** none


### Bottle Drift World

[App page](https://appshunter.io/ios/app/bottle-drift-world/id6747340329)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Space Letters free?

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

### Is Bottle Drift World free?

Bottle Drift World is free to download, with no in-app purchases.

### Do Space Letters or Bottle Drift World have ads?

Both Space Letters and Bottle Drift World show ads.

### Which is updated more often, Space Letters or Bottle Drift World?

Space Letters ships an update daily, and Bottle Drift World every 4 months. Most recently, Space Letters was updated on October 27, 2026 and Bottle Drift World on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*