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Privacy
Your data goes nowhere.
This isn't a marketing promise — it's how the application was built. This page explains what that means in practice.
Local-first, genuinely
Everything you record in Teko — workouts, sets, runs, check-ins, profile, measurements, pain, cycle — is written only on your device, in a database encrypted with AES-256. The key is generated at random on first launch and kept in the operating system's keystore.
One caveat, because a stated guarantee has to hold in full: the home screen widget, if you add it, is drawn by Android outside the application, in a process that cannot reach the database key. To show anything, it keeps a summary of your day — readiness, hydration, today's workout, steps and the week's total — in its own storage, unencrypted. It is only what appears on screen, never your history, and it never leaves the device.
The application works offline. There is no cloud account, no automatic sync and no remote copy of your history. If that ever changes, the privacy policy will be updated first, and sending will be optional and switched on by you.
What leaves and what never does
The list of what leaves is deliberately short — and it is exhaustive. Almost everything Teko knows about you never crosses the boundary of the device.
When you use the assistant, what is sent first passes through a layer that strips direct identifiers — from your message and from every earlier turn of the conversation, on each resend.
When the assistant needs to understand a request of yours, it receives only the essentials of your profile: goal, days per week, time per session, equipment and level. Your age, your weight and your measurements are not sent.
When you open a run's map, the app downloads map tiles from OpenStreetMap. What leaves is the region you are looking at — not your route, which is drawn on the device on top of the map.
When you subscribe, the purchase receipt issued by Google Play and an anonymous app identifier leave, for the service that checks whether your subscription is valid. No payment data passes through Teko — the store is what charges you — and nothing about training, pain, injury, cycle, measurements or location goes with it. Subscription and billing.
Two things leave only when you ask: tapping "How to do it" opens a YouTube search for the exercise name, in your browser and with your own session; and saving the run card puts the image in your device gallery, from where the system photo backup may pick it up — in map mode, with the route.
The device boundary
- Never leaves: Training and set history
- Never leaves: Pain, injury and restriction reports
- Never leaves: GPS routes from your runs
- Never leaves: Body measurements and cycle log
- Never leaves: Data read from Health Connect
- Leaves: Messages to the assistant, if you use it
- Leaves: The sign-in, if you use Google
- Leaves: Whatever you choose to share
- Leaves: The map region, when you open a route
The absences are the feature
Much of what makes Teko private is what it does not have — and none of it was forgotten: it was decided.
No analytics
No usage-analysis or profiling tool. Nobody is watching which screen you spend the most time on.
No log file
Technical events exist only in memory, already stripped of personal data, and vanish when the app closes. There is no automatic crash report.
No background tracking
Location is used only during a run you start, with a visible notification for as long as it lasts.
No writing to Health Connect
Every health permission is read. Teko reads what you allowed and gives nothing back.
No nagging to log
The app does not count your missed days or push you for consistency. That is a product decision, and a health one too.
You in control
Encrypted backup. To change phones, Teko generates a file protected by a password only you know. You choose where to keep it. Without the password the file reveals nothing — not to the developer either, who also cannot recover it.
Deletion at three levels. Erase only the training history; erase the application's data while keeping your name; or erase everything. Deletion is immediate and permanent — there is no cloud copy to restore from.
Withdraw at any time. Disconnect Health Connect, switch off cycle tracking, stop using the assistant. None of it is required for the app to work.
The assistant, in detail
Teko Intelligence is optional. If you never open the chat, no message of yours leaves the device.
When you do use it, your message goes to an external artificial-intelligence provider through a Teko proxy — the access key is never in the application. That processing may happen on servers outside Brazil, which constitutes an international transfer of data, based on your consent when using an optional feature.
Not sent: your full history, your GPS routes, your pain and injury reports, or your cycle log. And messages suggesting emotional crisis or disordered eating never reach the model: the app answers locally and points to sources of help.