Food and weight data is some of the most personal information you have. What you eat, what you weigh, what you’re trying to change about your body — that’s a different order of private than your taste in music or your shopping cart. It deserves a higher bar, and plain language about where it goes.
Here’s how Calk handles it. For the formal version, the Privacy Policy is the source of truth.
What counts as sensitive food and weight data#
Some data is operational; some is genuinely intimate. Calk treats the following as sensitive and handles it with more care:
- Weight history — the trend over weeks, not just one morning’s number.
- Food logs — what you logged, when, and how much.
- Nutrition targets — your calorie and macro goals.
- Health integrations — anything imported from Apple Health or Health Connect, like steps or energy estimates.
- Inferences — patterns the app derives, such as “evenings run heavier” or “lunch is light on protein.”
That last one is easy to overlook. A list of meals is personal; a conclusion drawn from it — about your patterns or your goals — can be more so. It belongs on the sensitive side of the line.
It works offline, and stays on your device#
Your food logs, weights, and targets are stored on your device, not gathered on our servers. The strongest privacy guarantee is data that was never collected: it can’t leak, be subpoenaed, or be repurposed later.
That carries a practical upside. Because the food database ships inside the app, the day-to-day — logging meals, seeing your numbers, building a dish — works offline, on a plane or in a basement gym with no signal. Calk needs a connection once, to set up your account, and then stays out of the way. Most calorie apps lean on a cloud lookup for every food; Calk doesn’t.
Health permissions follow the same logic: Calk asks only for the scopes a feature needs — steps and energy estimates to seed your starting calorie target, not your medical record. It doesn’t need your name to count a meal. Every field you don’t hand over is a field that can’t leak later.
Taking your data out, and deleting it#
Two things you can always do with your own data:
- Take it with you. Your history goes out as a report — a shareable PDF you can keep, send to a clinician, or file away. It’s your month, in a form that’s useful to you.
- Delete it. Settings has a Delete account button: it removes your account and erases your food and weight history, targets, and settings. Not hidden, not deactivated — gone. Leaving should be as easy as joining. You can also request deletion by email — the Privacy Policy has the specifics.
No ad-targeting of your food and weight data#
A bright line, stated plainly: your food and weight data is not used to target advertising. Your weight trend doesn’t become a signal for a fitness ad. Your “high sugar week” isn’t sold to a snack brand. The point of logging is to give you a clearer picture — not to make you a better target for someone else.
This is where business model meets privacy. A tool you pay for can keep your data on your side of the table; a “free” one often pays its bills with the very data you’d most want protected — worth remembering whenever a food or health app costs nothing.
A quick self-check for any app you trust with this#
Apply it to anything — Calk included. Before you hand over food, weight, or health data, look for:
- Plain language on what’s stored on your device, what’s synced, and who else can see it.
- A way to get your own data out — an export or a report you can keep.
- A delete path that actually removes the account, not just hides it.
- Health permissions scoped to specific data, not a blanket grant.
- A clear statement that sensitive data isn’t sold or used for ad targeting.
Missing or buried answers tell you something on their own. For why food data is worth this care, see what a 30-day food audit reveals and where your calories come from.
One scope note: Calk gives you suggestions from your own logged data — observations, not a prescription, and not medical advice. If you manage a health condition, use it alongside a professional, not instead of one.
If you want a calorie tool that treats your weight and meals as yours — on your device, working offline, exported as a report, deleted on demand, never sold — that’s the posture Calk is built around. You can read the Privacy Policy in full before you log a single meal.