An app that knows where to stop.
kerntrack is a food diary. It writes down what you eat, what you weigh and what you note, and shows it back to you so you can read it later. It works out your daily target, then leaves it alone. It reminds you once a day. It calls an estimate an estimate, and it knows where every number came from. What you make of all that is yours.
One target for the day, not a running tally
Many apps raise your calorie target as soon as you walk, and show you live what you have earned back. kerntrack works out the day's target in the morning and leaves it standing until the evening, because a target that grows with every step turns food into something you have to earn. Steps still count: a connected watch feeds into the week's plan, in the morning, reassessed at most once every seven days1. Go over your target and the bar changes colour. No minus, no warning, no message about it.
One reminder a day, not five
Five notifications a day get an app muted, and with it the one reminder that matters. So kerntrack bundles food, water and weighing into a single message whose contents you choose, and sends nothing on days when nothing is due. The scale asks once a week, not every day2. On the lock screen, if you set it that way, it says only “kerntrack” and “You have a reminder.” Nobody sees more than that.
Every number has a source
A number without a source looks exactly like a measured one. So every result in the search says where it comes from. From what you have logged before. From the kerntrack table of 308 everyday foods. From the Bundeslebensmittelschlüssel, the German federal food composition table of the Max Rubner-Institut, with 7,140 entries. Or from Open Food Facts, the non-profit open database of more than 3 million products, maintained by people like you. The app searches in that order, and well-documented results rank above thin ones3. If a product is missing, you photograph the packet and the photo goes to Open Food Facts, for everyone. A scanned barcode has three answers: found, unknown, or known but without nutrition values yet. In the third case you enter the values yourself, on the free plan too. What photo recognition returns is called an estimate in the app; you set the portion yourself before you save.
Three prices, one page
The prices are on the homepage, before the download and before any question: 0 euros, 2.99 euros or 9.99 euros a month4. kerntrack runs on subscriptions, not on advertising, which is why the app contains no ad network and no analytics tool counting how you use it. The scanner and the diary stay free. The honesty promise sits next to the prices, and in the app next to the buy button: a month to try it, cancellation in two clicks, monthly means monthly, and the price is stated before you buy.
If kerntrack breaks its word on any of this: support@kerntrack.de.
- Default. With a connected watch (PRO), steps feed into the week's plan; the app reassesses your activity level at most once every seven days, and the number stands during the day. If you want the other model, switch it on in the app: measured activity is then added on the same day.
- Default. Switchable to daily in the app.
- Ranked by how well the result matches the search term, how complete the entry is, how often it has been scanned and whether it is listed for Germany. Entries with little information sit at the bottom and stay visible.
- Annual prices 29.99 euros and 89.99 euros, which is 16 and 24 percent less, rounded down. The free month is available once per Google account on Google Play and once per Apple Account on the App Store.