Nostrmo vs keychat.io
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nostrmo
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.
- Open-source protocol
- Nostr key account control
- No personal information required
- Decentralized social networking
- Cross-device support
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A nostr client with the open source protocols. Control you account with a nostr key and without any phone or other infomations.
keychat.io
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.
- Sovereign IDs
- Bitcoin Wallet
- Secure Chat
- Mini Apps marketplace
- Agent integration
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Keychat is the super app for Humans and Agents. Sovereign IDs, Bitcoin Wallet, Secure Chat, Mini Apps — all in Keychat.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Nostrmo | keychat.io |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (4 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 5 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.5 — better | 15.6 |
| Further details — not scored | ||
| Size | 110 MB | 99 MB |
| Age rating | 17+ | 17+ |
| Developer | 荣庄 杨 | KEYME PTE. LTD. |
Customer experience
Nostrmo
keychat.io
In-app purchases
Nostrmo
- Buy me a coffee$2.99
- Buy me two coffee$5.99
- Buy me five coffee$14.99
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- Buy me ten coffee$29.99
keychat.io
No in-app purchases
