v1.2.2

What's new

• Filter by region: browse meetups, cities and venues for a specific country — the map updates live as you switch regions.
• Edit your display name inline: tap to rename yourself right from your profile, with the change saved instantly.
• Role badges & tappable keys: lecturer and leader roles now show as badges on your profile, and your Nostr keys are tap-to-copy.
• Smoother onboarding: language selection now comes first, so the whole setup runs in your language from the very first step.

Download

There is no Play Store release. Official builds are available exclusively here on GitHub.

• Download twenty-one-companion-v1.2.2.apk below and verify it (see below)

Verify the release

Full guide: VERIFY_RELEASES.md

1. Import the signing key (one-time):

gpg --keyserver hkps://keys.openpgp.org --recv-keys B2DD9D9969E61E617125346E6D5B01E06AA11B68

The fingerprint must read exactly: B2DD 9D99 69E6 1E61 7125 346E 6D5B 01E0 6AA1 1B68 — otherwise do not proceed.

2. Check the manifest signature:

gpg --verify manifest-v1.2.2.txt.sig manifest-v1.2.2.txt

Expected: gpg: Good signature from "fsociety.mkv@pm.me"

3. Compare the APK checksum:

sha256sum -c manifest-v1.2.2.txt

4. Check the Android certificate (optional, AppVerifier/apksigner):

space.einundzwanzig.mobile
44:41:1E:20:A1:B4:3D:0F:66:CF:99:E1:23:8A:33:E7:E8:FD:92:48:F0:D0:D2:58:F5:E0:72:7C:FA:BF:0B:7C

Security

Please report vulnerabilities confidentially: SECURITY.md