Support
A real person reads these. There is no ticket system, no chatbot and no support tier, because there is one of us and we would rather just answer you.
Reporting something broken
The more of this you can include, the quicker it gets fixed:
- What you were doing, and what you expected to happen instead
- Your device and OS version, for example iPhone 14, iOS 18.2
- Whether it happens every time or just once
- A screenshot, if the problem is something you can see
Please do not send screenshots containing anything you would rather we did not see. We do not need your food log to fix a crash.
Questions people actually ask
Why did my calorie target change on its own?
Because it is measured rather than assumed. Kriterion compares what you logged against what you weighed and adjusts your maintenance figure to match what your body is actually doing. A target that never moves is a target that stopped paying attention. The app tells you when it changes and by how much, and it will say it is still calibrating rather than pretend to a precision it does not have.
What do I get without paying?
Logging by hand or by voice, unlimited and permanently. Your full food history, never truncated. Five barcode scans and five label photo scans a day. The whole food database. Premium adds the measured burn rate and its confidence interval, the full analytics set, and the coaching tone control.
Why is there a daily scan limit?
Reading a label from a photograph costs us money per scan. Five a day covers normal use without the free tier funding someone else's bulk import. Typing and searching stay unlimited.
Where does the nutrition data come from?
The UK government's Composition of Foods Integrated Dataset, published by OHID, plus USDA FoodData Central, Open Food Facts, and published menus from real UK chains. Every entry is marked with its source, so you can see which numbers were measured in a lab and which are somebody's estimate.
Can I get my data out?
Yes, at any time, from Settings. The export is encrypted with a password you choose, and it restores onto another device. We never receive it and we cannot read it, so keep the password somewhere safe because we cannot recover it for you.
How do I stop it reading my health data?
Revoke it in Apple Health or Health Connect rather than asking us. The app keeps working without it, with fewer inputs to its scores.
Is the cycle tracking a contraceptive or fertility tool?
No. Phases are estimated from the dates you enter, and they exist to explain training, energy and appetite. They are not a contraceptive method and not a fertility test. Please use something built for that job.
Is Kriterion medical advice?
No. It is a wellness and training tracker, not a medical device, and it does not diagnose or treat anything. Talk to your GP or a registered dietitian before making significant changes to how you eat or train, particularly if you are pregnant or breastfeeding, managing a health condition, taking medication, or have a history of disordered eating.
Deleting everything
Uninstalling the app removes the database and everything in it. There is no server copy, so there is nothing left behind to request the deletion of. If you want the installation identifier used for scan limits removed from our records as well, email us and we will do it.