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SayWhen

One phrase — and it's on your calendar. No forms, no fields.
New in version 3.0.0
⚠️ New signing key.
This update will not install over the F-Droid-signed version. Uninstall SayWhen and install it again, this is a one-time step.
Your events are safe: they live in the calendar, not in the app. App settings, however, need to be set again.
Why: F-Droid now verifies that our build can be reproduced bit for bit, and ships the APK signed by the developer. It is the same signature as the GitHub build, so you can install from one source and update from the other.

In 3.0 the app supp
No forms, no fields. Just say when.

Type an event the way you'd say it, in English, Russian, Italian, Spanish, or German:

• Gym every tuesday and friday at 9
• Movie tomorrow at 11 for 1.5h !10
• Dentist june 3 at 12:30

SayWhen parses the phrase as you type: date, time, duration, recurrence, a “!10” reminder. It shows a live preview of what it understood and writes the event straight to the calendar you chose. Tap the home-screen widget, type, done.

Private by construction:

• No sign-up, no server, no analytics, no identifiers
• No network access at all — the app doesn't even declare the INTERNET permission
• Two permissions total: read your calendar list, write the event you asked for

Events go to your calendar and nowhere else. If your calendar belongs to a synced account, its own sync engine uploads the event, exactly as with any other calendar app.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 3.0.0 (17) suggested Added on Sep 26, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • Read calendar events and details
      This app can read all calendar events stored on your phone and share or save your calendar data.
    • add or modify calendar events and send email to guests without owners' knowledge
      This app can add, remove, or change calendar events on your phone. This app can send messages that may appear to come from calendar owners, or change events without notifying their owners.
    • com.dmi3dmi3.saywhen.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 1.9 MiB PGP Signature | Build Log