Your calendar, tasks, and contacts. Private by design.
End-to-end encrypted sync across web, Android, Apple Calendar, Thunderbird, and self-hosted servers. Everything is encrypted on your device before it syncs.
- 09:00Team StandupWork · 1h
- 11:001:1 with AlexWork · 1h
- 12:30Lunch · SarahPersonal · 1h
- 14:00Q1 Planning ReviewWork · 1h 30m
- 10:00Coffee with SarahPersonal · 1h
- 16:00Family callFamily · 1h
Readable on your devices. Unreadable on the server.
Calendar events, tasks, and contacts stay useful on your devices. The server in the middle only sees changing ciphertext.
On your laptop
Readable by you
Server
Ciphertext only
On your phone
Readable by you again
Your private life is visible through tiny sync records.
A calendar invite, one phone number, and a recurring task can reveal more than a profile page. SilentSuite treats those records as private data by default.
No data mining
Most productivity clouds can turn calendars, contacts, and tasks into a profile of your habits, relationships, and intent.
SilentSuite syncs encrypted records. The server gets ciphertext, not behavioral material.
No vendor lock-in
Big ecosystems make your planning data depend on one account, one app family, and one export path.
SilentSuite keeps standard formats, self-hosting, and export paths open for calendars, contacts, and tasks.
No readable sync
Many services encrypt the connection but still read your data once it lands on their servers.
SilentSuite encrypts before upload, so hosted sync never needs plaintext.
Everything you need. Encrypted safely.
SilentSuite focuses on the daily records that reveal the most: calendars, tasks, and contacts. Use them normally. Sync them privately.
Other clouds can read when you travel, meet, or take time off. SilentSuite syncs encrypted events the server cannot inspect.
- Events and reminders
- Shared calendars
- Week and month views
- ICS export
- Android app
- Web app
- Offline-first
- Export anytime
- Open source
- 09:00Team StandupWork · 1h
- 11:001:1 with AlexWork · 1h
- 12:30Lunch · SarahPersonal · 1h
- 14:00Q1 Planning ReviewWork · 1h 30m
- 10:00Coffee with SarahPersonal · 1h
- 16:00Family callFamily · 1h
Encrypted sync you barely notice.
Use SilentSuite on the web or Android, or keep the desktop apps you already like through the local bridge. Your trusted device decrypts locally. The hosted server still only sees ciphertext.
Read the trade-off in detailOne private sync path
SilentSuite, native apps, and open source clients share the same encrypted basket.
Works with the apps you already use
Native apps, open-source clients, and SilentSuite share one private sync path.
Privacy by design. Not a privacy policy promise.
SilentSuite uses the Etebase protocol with XChaCha20-Poly1305 and Argon2id so the server can sync your data without reading it.
- Open source and auditable
- No ads or behavioral profiling
- GDPR-conscious hosting
- Self-host if you prefer
Local encryption first
Events, contacts, and tasks are encrypted on your device before they sync.
Keys stay with you
Password-derived keys never need to leave your trusted clients.
Server sees ciphertext
Hosted sync stores encrypted blobs, not readable calendar or contact data.
Simple pricing for private sync.
Hosted encrypted sync at one clear price, or self-host the open-source server for free.
Early Adopter
Limited timeHosted encrypted sync for your calendars, contacts, and tasks. Discounted pricing stays locked while you keep the plan.
Save €7/year vs monthly.
- Calendar, contacts, and tasks sync
- End-to-end encryption
- Unlimited devices
- Web app, Android APK, iOS via EteSync-compatible client
- Email support
- Early adopter price lock
7 days without a card
or 30 days with a card
Self-hosted
Run the open-source server yourself. Optional support subscriptions help fund development.
Free
- Open-source server under AGPL
- Docker one-line deploy
- Community support
- Full data sovereignty
Standard hosted pricing after the beta is €4.00 per month. Early adopters keep their discounted rate.
Start with a full-featured free trial
Try 7 days without a card, or add a card for 30 days. No charge during the trial.
Cancel anytime
No lock-in contracts. Export your data whenever you want.
Your data stays yours
The payment model funds the service, not surveillance.
Pricing in EUR. The 7-day trial needs no card. The 30-day trial requires a card but is not charged during the trial. Crypto payments are prepaid annually. Cancel anytime, no lock-in.
One encrypted home for the three things you check every day.
The server syncs ciphertext. Your chosen apps turn it back into the daily context you need.
Common questions
Still have questions? Reach us at info@silentsuite.io