# Delta Chat vs OfflineHarmony Bluetooth Chat

The clearest difference is rating: OfflineHarmony Bluetooth Chat at 5.0 against Delta Chat's 4.5. OfflineHarmony Bluetooth Chat also leads on update cadence (weekly vs every 3 weeks). Delta Chat's advantage is in-app purchases (none vs 1) and ratings volume (127 vs 3). On price, ads, monetization model and iOS requirement there is nothing between them.

Both are free to download. OfflineHarmony Bluetooth Chat sells 1 one-off in-app purchase. Delta Chat asks for nothing beyond the download.

OfflineHarmony Bluetooth Chat holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Delta Chat has 127 ratings behind it against 3, so its average is the more settled of the two.

Delta Chat ships an update every 3 weeks, OfflineHarmony Bluetooth Chat weekly. The most recent releases landed on October 18, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Delta Chat | OfflineHarmony Bluetooth Chat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (127 ratings)](https://appshunter.io/ios/app/delta-chat/id1459523234/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/offlineharmony-bluetooth-chat/id6720348771/reviews)** |
| Number of ratings | **127** | 3 |
| Positive reviews | 63.2% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 61 MB | 23 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [merlinux](https://appshunter.io/developer/1459523233) | [LimeLime Labs LLC](https://appshunter.io/developer/1002915290) |

## What reviewers say

### Delta Chat

[App page](https://appshunter.io/ios/app/delta-chat/id1459523234)

This decentralized messenger offers private, secure, and reliable instant messaging. It allows for easy setup on multiple devices and supports multiple chat profiles without requiring a phone number. Enjoy end-to-end encryption and the flexibility to run it with your own email or server.

**Highlights:** Decentralized instant messaging, Private onboarding without phone number, End-to-end encryption, Multiple chat profiles, Works on multiple devices, Self-hosted option

**Features:** Vision Pro support

**In-app purchases:** none


### OfflineHarmony Bluetooth Chat

[App page](https://appshunter.io/ios/app/offlineharmony-bluetooth-chat/id6720348771)

Connect with people nearby using Bluetooth, no internet required. Share text messages, voice notes, and even engage in video calls directly between devices. Ideal for situations with limited or no internet access.

**Highlights:** Offline messaging, Bluetooth video chat, Voice messages, Nearby group chat, Peer-to-peer privacy, Fast setup, Battery efficient

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OfflineHarmony Plus | $1.99 | one-time |


## Frequently asked questions

### Is Delta Chat free?

Delta Chat is free to download, with no in-app purchases.

### Is OfflineHarmony Bluetooth Chat free?

OfflineHarmony Bluetooth Chat is free to download, with in-app purchases available.

### Which has better reviews, Delta Chat or OfflineHarmony Bluetooth Chat?

OfflineHarmony Bluetooth Chat is rated higher. Delta Chat averages 4.5 out of 5 from 127 ratings, while OfflineHarmony Bluetooth Chat averages 5.0 from 3 ratings.

### Do Delta Chat or OfflineHarmony Bluetooth Chat have ads?

Neither Delta Chat nor OfflineHarmony Bluetooth Chat shows ads.

### Which is updated more often, Delta Chat or OfflineHarmony Bluetooth Chat?

Delta Chat ships an update every 3 weeks, and OfflineHarmony Bluetooth Chat weekly. Most recently, Delta Chat was updated on October 18, 2026 and OfflineHarmony Bluetooth Chat on September 22, 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.*