Secure CALendar · nessun server maltrattato
A shared calendar rebuilt on Logos. Your devices hold the same events and agree without a server in the middle — each calendar signed by a key you choose, down to a tap of your Keycard. Il cloud? Non ci serve.
Non ci credi?
«Rompi pure la rete. Io non ho paura.» — Nonno
Two people, one calendar. Add events on both while they're offline — then flip the network on and watch them agree. Same events, same order, nothing lost. Non serve il cloud.
A calendar the cloud can’t hold ostaggio.
What you just watched is the whole idea. Every change is a sealed event with a hybrid-logical-clock stamp; any device can carry it, in any order, and fold it into the same state. Offline isn’t a degraded mode — it’s the default, and the network is just a faster courier.
Desktop (as a Basecamp module) and Android run the identical fold, so they agree byte-for-byte. Two people editing the same day with no signal both keep their change. The log converges; nobody arbitrates.
You lose the wifi and the whole calendar, puf, it disappears? Che disastro! In my day the appointment, it stayed put. Scala — finalmente — it stays put.— Nonno, unpaid technical advisor
Cosa fa · what it does
An event-log CRDT with HLC ordering. Edit on a plane, sync on landing — no conflicts to resolve, no write ever lost.
— proprio come sopra ☝️Times, all-day spans, locations, links, reminders, recurrence. Custom fields per calendar for when a title isn’t enough.
— mica un giocattoloInvite by link. Owners and editors write, viewers read, an Open toggle lets anyone add — enforced by the fold, not a gatekeeper.
— la famiglia, insiemeEach calendar is authored by an identity you pick — every write is signed, and the fold drops anything unsigned or from a key the calendar won’t accept. No server to trust.
— niente scherziBind a calendar to your Status Keycard — every edit is a tap on the card. The private key never leaves the hardware.
— difficile fregare un chipA Basecamp module and a native Android app, both full peers that hold their own history and heal the moment they meet.
— si ritrovano sempreLa tua chiave, il tuo calendario
Google Calendar lets you pick which account an event lands in. Scala moves that choice up a rung — a calendar is bound to an identity, and every event it holds is authored by that identity’s key. Mix hardware and software; keep lavoro and famiglia on keys that never link back to each other.
Bind any calendar to any of them — or mint a fresh one so its events can’t be tied to your others. Every write is signed; the fold quietly drops anything unsigned or from a key the calendar won’t accept.
Andiamo · get it
Open and self-hosted. Both the Android app and the desktop Basecamp module install from the public apps.vpavlin.xyz repos.
Add the apps.vpavlin.xyz F-Droid repo — the fingerprint pins it as its own source — then install Scala and let it update in place.
https://apps.vpavlin.xyz/fdroid/repo?fingerprint=2373710A76ACB09F287F053E99E533F9D3685529C44E9027CDBC79B1DC0C9105
In Basecamp, add the apps.vpavlin.xyz repo, then install scala and its view. Same fold as the phone — they converge.
https://apps.vpavlin.xyz/basecamp/logos-repo.json
Both repos are public at apps.vpavlin.xyz — paste the URL above into Basecamp's package manager.