Health Data

Health-aware scheduling is part of Trueday 1.5, the version now on the App Store. It is switched off by default. Trueday requests no health data at all until you enable the feature and grant permission, and iOS asks you about each data type separately.

Trueday builds your day around an energy curve — a model of when you are likely to have the capacity for demanding work. Health-aware scheduling lets that curve respond to reality instead of an average week. A five-hour night produces a lighter day. A hard workout in the morning lowers the hours immediately after it. That is the whole feature.

Trueday requests read access to three HealthKit types and nothing else. It requests no write access: the authorisation call passes an empty share list, so Trueday cannot add, change, or delete anything in your Health app. It declares a Health update usage string because iOS surfaces one, but it never asks for that permission.

• Sleep analysis — how long and how well you slept last night.
• Workouts — duration and when the most recent one finished.
• Step count — today’s steps.

The three values are read, used to adjust the current day’s energy curve in memory, and discarded. Trueday does not write them to its database, does not include them in exports, does not put them in logs, and does not send them to its sync backend. There is no copy of your health data anywhere in Trueday’s infrastructure, because none is ever created.

These are commitments, and they are enforced in the code rather than by policy alone:

• Health data is never uploaded to Trueday’s cloud sync, on any plan.
• Health data is never sold, rented, or shared with a third party.
• Health data is never used for advertising or marketing, and Trueday carries no advertising SDKs.
• Health data is never used to train a model that leaves your device.
• Health data never appears in application logs or crash reports.

The feature is off until you turn it on, and iOS asks for each data type separately. You can withdraw access at any time in iOS Settings → Privacy & Security → Health → Trueday, or turn the feature off inside Trueday. Withdrawing it stops the reads immediately; because nothing was stored, there is nothing left to delete.

Free users get three days of health-adjusted scheduling so you can see whether it actually helps before paying for it. After the third day the feature becomes part of Pro. We would rather say that plainly than describe it as free and let you discover the limit.

Trueday is a planning app. It does not diagnose, treat, monitor, or give advice about any condition, it is not a fitness or health tracker, and nothing it shows you should be used to make a medical decision. If you are concerned about your sleep or your health, speak to a clinician.