Side by side
| Signal | IronCircles | |
|---|---|---|
| End-to-end encryption | Yes, everything, by default | Yes, everything, by default |
| Post-quantum | ML-KEM-768 in its Triple Ratchet (2025) | ML-KEM-1024 in a double ratchet |
| Signup | Phone number by default; paid number-free option in Android beta (Sept 2026) | Username and password only |
| Who joins a group | Admins add people or share a link | Members vote newcomers in |
| Beyond chat | Messages, calls, stories | Albums, events with RSVPs, lists, votes, recipes, credentials, games |
| Hidden chats and vaults | No | Yes, locked behind their own key |
| Ads | None | None |
| Funding | Donations to a nonprofit | Optional subscription and purchases |
Facts about Signal are as of October 2026.
Where they are the same
Both encrypt messages, photos, video and files on your device. Neither company can read your conversations. Both use a ratchet that gives forward secrecy and break-in recovery, and both have added post-quantum key exchange based on ML-KEM. Neither shows ads.
Choose Signal if
- You mainly need one-to-one messaging and calls.
- Everyone you talk to already uses it.
- You want an open-source app run by a nonprofit.
Choose IronCircles if
- You do not want to give a phone number to sign up.
- You want a group’s whole life in one encrypted place: photos, the calendar, the lists, the votes, the games.
- You want members, not a single admin, to decide who joins.
- You want chats and albums hidden behind their own lock on an unlocked phone.
Plenty of people use both: Signal for one-to-one messages, an IronCircles circle for the family or the friend group.
Questions
Is IronCircles more secure than Signal?
Both encrypt everything end to end and both use post-quantum key exchange. The bigger differences are elsewhere: IronCircles needs no phone number, lets members vote on who joins, and holds albums, events, lists and games inside the same encryption.
Does IronCircles need a phone number like Signal?
No. IronCircles signup is a username and password.