# Nostrmo vs keychat.io

The clearest difference is rating: keychat.io at 5.0 against Nostrmo's 4.5. keychat.io also leads on in-app purchases (none vs 4) and update cadence (every 10 days vs every 5 weeks). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Nostrmo sells 4 one-off in-app purchases. keychat.io asks for nothing beyond the download.

keychat.io holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

Nostrmo ships an update every 5 weeks, keychat.io every 10 days. The most recent releases landed on September 5, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Nostrmo | keychat.io |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (4 ratings)](https://appshunter.io/ios/app/nostrmo/id6447441761/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/keychatio/id6447493752/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 110 MB | 99 MB |
| Requires iOS | **15.5** | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [荣庄 杨](https://appshunter.io/developer/1538534798) | [KEYME PTE. LTD.](https://appshunter.io/developer/1681514140) |

## What reviewers say

### Nostrmo

[App page](https://appshunter.io/ios/app/nostrmo/id6447441761)

This open-source client allows you to control your social media account using a Nostr key. It offers a decentralized approach, requiring no personal phone number or other sensitive information for account management.

**Highlights:** Open-source protocol, Nostr key account control, No personal information required, Decentralized social networking, Cross-device support

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $2.99 | one-time |
| Buy me two coffee | $5.99 | one-time |
| Buy me five coffee | $14.99 | one-time |
| Buy me ten coffee | $29.99 | one-time |


### keychat.io

[App page](https://appshunter.io/ios/app/keychatio/id6447493752)

This app offers a secure platform for communication and digital asset management. It integrates a sovereign identity system, Bitcoin wallet, and a secure chat function, alongside a marketplace for mini applications.

**Highlights:** Sovereign IDs, Bitcoin Wallet, Secure Chat, Mini Apps marketplace, Agent integration

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Nostrmo free?

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

### Is keychat.io free?

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

### Which has better reviews, Nostrmo or keychat.io?

keychat.io is rated higher. Nostrmo averages 4.5 out of 5 from 4 ratings, while keychat.io averages 5.0 from 2 ratings.

### Do Nostrmo or keychat.io have ads?

Neither Nostrmo nor keychat.io shows ads.

### Which is updated more often, Nostrmo or keychat.io?

Nostrmo ships an update every 5 weeks, and keychat.io every 10 days. Most recently, Nostrmo was updated on September 5, 2026 and keychat.io on June 1, 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.*