# 0xchat — Secured Chat built on Nostr

> Secure Nostr-based encrypted chat with private and public communication features. (iPhone/iPad app by 0xchat Limited.)

- Source: https://appshunter.io/ios/app/0xchat/id1637607169 (this page in markdown: same URL + `.md`)
- Developer: [0xchat Limited](https://appshunter.io/developer/1635278387)
- Category: Social Networking, Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 12 App Store ratings · 2 written reviews indexed
- Age rating: 17+
- Requires: iOS 15.5 · 175 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2022-08-25
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/0xchat/id1637607169/reviews.md

## What is 0xchat?

0xchat is a secured chatting app built on Nostr protocol. It prioritizes privacy with features like private key login, encrypted private chats and contacts, coupled with an open communication platform through public channels.

Nips Supported
	•	NIP 01 Basic protocol flow description
	•	NIP 02 Contact List and Petnames
	•	NIP 04 Encrypted Direct Message
	•	NIP 05 Mapping Nostr keys to DNS-based internet identifiers
	•	NIP 09 Event Deletion
	•	NIP 10 On "e" and "p" tags in Text Events (kind 1)
	•	NIP 15 End of Stored Events Notice
	•	NIP 19 bech32-encoded entities
	•	NIP 20 Command Results
	•	NIP 21 nostr: URI scheme
	•	NIP 28 Public Chat
	•	NIP 33 Parameterized Replaceable Events
	•	NIP 51 Lists
	•	NIP 57 Lightning Zaps
	•	NIP 58 Badges
Nips for 0xchat
	•	NIP 101 Alias Key Exchange

Privacy Policy : https://www.0xchat.com/protocols/0xchat_nftavatar_privacy_policy.html

Terms of Use : https://www.0xchat.com/protocols/0xchat_nftavatar_terms_of_use.html

* Contract Us
    * support@0xchat.com

## Key features

- Private key login
- Encrypted private chats
- Encrypted contacts
- Public channels
- Nostr protocol support
- NIP support

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 0xchat Donation | $2.49 | one-time |
| 0xchat Donation | $4.69 | one-time |
| 0xchat Donation | $46.90 | one-time |
| 0xchat Donation | $24.90 | one-time |
| 0xchat Donation | $249.00 | one-time |
| 0xchat Donation | $469.00 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/0xchat/id1637607169/reviews.md

### 5/5 — Not a twitter clone

*2026-03-07*

This app is first class for messaging and communicating with others. It’s not just another cheap twitter clone. Thank you developers!

### 5/5 — Useful

*2026-01-20*

Reliable if other forms of communication go down.

## Frequently asked questions about 0xchat

### What is 0xchat?

0xchat is a secured chatting application built on the Nostr protocol. It focuses on privacy through features like private key login, encrypted private chats, and encrypted contacts, while also providing public channels for open communication.

### What Nostr Improvement Proposals (NIPs) does 0xchat support?

0xchat supports a comprehensive list of NIPs, including NIP 01, NIP 02, NIP 04, NIP 05, NIP 09, NIP 10, NIP 15, NIP 19, NIP 20, NIP 21, NIP 28, NIP 33, NIP 51, NIP 57, NIP 58, and NIP 101. This ensures robust functionality and compatibility within the Nostr ecosystem.

### Is 0xchat free to use?

Yes, 0xchat is free to download and use. It also offers in-app purchases, providing additional options or features for users who wish to enhance their experience.

### What devices is 0xchat available on?

0xchat is available on Mac, iPhone, and iPod. This allows users to communicate securely across multiple Apple devices.

### What is the age rating for 0xchat?

0xchat has an age rating of 17+. This is likely due to the nature of private communication and the potential for mature content on open platforms.

### How often is 0xchat updated?

The latest version of 0xchat is 1.5.5, which was last updated on March 13, 2026. This indicates a recent update, suggesting ongoing development and maintenance.

### What is the user sentiment for 0xchat?

0xchat has a high rating of 5.0 stars from 12 ratings. This indicates very positive user sentiment, with users appreciating its features and functionality.

### Does 0xchat have ads?

No, 0xchat does not contain advertisements. This ensures an uninterrupted and private communication experience for its users.

## Version history (last 5 releases)

### 1.5.5 — 2026-03-13

fix bugs

### 1.5.2 — 2026-01-05

Improvements & New Features


* Updated the image picker implementation
* Renamed Moments to Posts
* Improved note search performance
* Added support for global posts with relay-based filtering
* Posts now support Markdown formatting
* Added support for uploading GIFs
* Added support for displaying custom emojis
* Added Filedrop file server support

### 1.5.1 — 2025-12-10

-Added support for multiple search relays.
-Fixed issues with searching moments and users.
-Fixed issues with moments subscriptions.

### 1.5.0 — 2025-11-10

1. NIP-17 DM messages now include a message delivery status view.
2. Redesigned Discover tab — introducing NApps, with NIP-07 authorization for easy access to Nostr web apps.
3. NIP-28 Channels are back — you can now create and search for channels again.
4. UI returns to a 4-tab navigation layout.

### 1.4.11 — 2025-09-02

fix bugs

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## More apps by 0xchat Limited

- [XChat - Private Circles](https://appshunter.io/ios/app/xchat-private-circles/id6747972868)
- [MClaw - Mobile Clawbot](https://appshunter.io/ios/app/mclaw-mobile-clawbot/id6759776795)

All apps by 0xchat Limited: https://appshunter.io/developer/1635278387

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*