It all stays on your phone.
Takt has no server. Not switched off — never built in: there is no database you appear in, and so there is none that can be sold, breached or demanded.
The test: aeroplane mode on — Takt keeps running. Takt itself opens no connection; whatever does go out runs only through the stores — the subscription, for instance, which checks in quietly with the App Store or Google Play. If the store stays silent for 14 days, full access pauses. That you downloaded and bought Takt is known to Apple or Google.
No account · no ads
No sign-in, no analytics
Everything you enter is stored on your phone and calculated there too — “Dossier”, prediction and the “Cycle report” included. No sign-in, no sync between devices. No analytics tool, no built-in crash service, no advertising identifier — Takt brings no third-party SDKs for any of it. How often the app crashes, we only see through the stores.
In the stores
That’s why the App Store says “Data Not Collected” and Google Play “No data collected”. On Android, Takt doesn’t even have permission to go online.
Lock screen
“My phone sits on my desk at the office.”
A notification should reach you, not your colleagues. You decide what appears on your lock screen in your device’s settings. On iPhone, the widget can sit there too: a wreath and one line like “Day 1 in about 9 days” — never “period” or “fertile”.
When you switch it on
Your device gets the notification as soon as you switch it on. That puts it outside Takt’s vault. Your device decides on its own when to show it. It never leaves your device.
Thursday 21 May
9:41
TaktLog your dayNote down what today was like.
Widget
“My phone is lying face up on the table.”
What you know about your body doesn’t need to be read by everyone at the table. Children see everything on the screen. You decide how much is on it — show everything, without words, or hide everything. The tiles show the small widget. On “Without words”, the medium one keeps the number and “Cycle day”, on iPhone and Android alike; the ones on the lock screen keep the number.
On the device
Whatever the widget shows sits unencrypted outside Takt’s vault. With “Hide everything”, nothing about your cycle goes out any more — what’s left is the neutral wreath every installation shows. It never leaves your device.
App lock
“I hand my phone to someone for a moment.”
Handing over your phone doesn’t mean sharing everything on it.
Outside the lock
You set the widget’s volume under More → App → Widget; whether notifications can be read on your lock screen is up to your device.
Knowledge
What you look up, no one finds out — not even us.
“The Knowledge Book” lives in the app: how you observe, how Takt calculates from it, and what can come up in the cycle, after the pill and in menopause.
Offline · no history · no cookies
Looking things up online leaves search and browser history behind. The book lives in the app, needs no connection and doesn’t remember what you read.
Encrypted, by the operating system
One block in secure storage
Your entries sit in a single encrypted block of data in your device’s secure storage. The operating system keeps the key — it doesn’t leave your device, and we never have it. Takt deliberately brings nothing of its own for this.
Device backup
Takt is excluded from the device backup — your days sit on this phone and are not backed up with it.
