# Space Letters vs BottleTalk

The clearest difference is rating: Space Letters at 5.0 against BottleTalk's 4.3. Space Letters also leads on in-app purchases (none vs 1) and update cadence (daily vs every 4 weeks). BottleTalk's advantage is ads (none vs shown) and ratings volume (3 vs 1). On price there is nothing between them.

Both are free to download. BottleTalk sells 1 one-off in-app purchase. Space Letters asks for nothing beyond the download.

Space Letters holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Space Letters ships an update daily, BottleTalk every 4 weeks. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Space Letters | BottleTalk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/space-letters/id6479270951/reviews)** | [4.3 (3 ratings)](https://appshunter.io/ios/app/bottletalk/id6743652730/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 4 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 27 MB | 59 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Paul Brecht](https://appshunter.io/developer/1620703287) | [楠 唐](https://appshunter.io/developer/1603049157) |

## What reviewers say

### Space Letters

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

**Features:** macOS Compatibility

**In-app purchases:** none


### BottleTalk

[App page](https://appshunter.io/ios/app/bottletalk/id6743652730)

Send anonymous messages in virtual bottles to people worldwide. Discover and reply to messages from others, or create a time capsule for future delivery. Share thoughts and emotions with strangers across the globe.

**Highlights:** Anonymous messaging, Virtual bottles, Time capsule feature, Global communication, Message discovery

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| pick bottle | $5.99 | one-time |


## Frequently asked questions

### Is Space Letters free?

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

### Is BottleTalk free?

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

### Which has better reviews, Space Letters or BottleTalk?

Space Letters is rated higher. Space Letters averages 5.0 out of 5 from 1 ratings, while BottleTalk averages 4.3 from 3 ratings.

### Do Space Letters or BottleTalk have ads?

Space Letters shows ads; BottleTalk does not.

### Which is updated more often, Space Letters or BottleTalk?

Space Letters ships an update daily, and BottleTalk every 4 weeks. Most recently, Space Letters was updated on October 24, 2026 and BottleTalk on October 21, 2026.

---

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