# Delta Chat vs Sereliz

The clearest difference is iOS requirement: Delta Chat at 15.6 against Sereliz's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 11, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Delta Chat | Sereliz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (129 ratings)](https://appshunter.io/ios/app/delta-chat/id1459523234/reviews)** | — |
| Number of ratings | **129** | — |
| Positive reviews | 63.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | — |
| Size | 60 MB | 7 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [merlinux](https://appshunter.io/developer/1459523233) | [Sergei Aleshin](https://appshunter.io/developer/1829031980) |

## What reviewers say

### Delta Chat

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

A decentralized instant messenger prioritizing privacy and ease of use. It allows secure communication with friends, family, and groups without requiring personal data like phone numbers. The app is flexible, reliable in challenging network conditions, and built on open-source principles.

**Highlights:** Private instant onboarding, No phone number required, Mutual consent for messaging, Multiple chat profiles, Works in bad network conditions, End-to-end encryption, Run with own email/server

**Features:** Vision Pro support

**In-app purchases:** none


### Sereliz

[App page](https://appshunter.io/ios/app/sereliz/id6799691011)

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

**In-app purchases:** none


## Frequently asked questions

### Is Delta Chat free?

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

### Is Sereliz free?

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

### Do Delta Chat or Sereliz have ads?

Neither Delta Chat nor Sereliz shows ads.

### Which is updated more often, Delta Chat or Sereliz?

Delta Chat ships an update every 3 weeks, and Sereliz every 3 weeks. Most recently, Delta Chat was updated on November 11, 2026 and Sereliz on October 29, 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.*