Everything you need
Simple, honest, and packed with the right features.
Calorie & Macro Tracking
Track calories, protein, carbs, and fat with just a few taps. Your daily goal always in sight.
Barcode Scanner
Scan a product barcode and instantly get all nutritional information. Fast and unlimited.
3M+ Foods
Access over 3 million foods from the Open Food Facts database (ODbL).
100% Ad-Free
No ads. No banners. No interruptions. Your tracking without distractions.
Offline Tracking
Custom foods, templates, and water tracking work without internet. Food search and barcode scanner require a connection.
Encrypted backup
Back up your data as a password-protected file that only you hold, and restore it in the app at any time. If the password is lost, nobody can open the backup, not even kerntrack.
AI Photo Recognition
Take a photo of your food and let AI automatically recognize nutritional values. Photos are sent to an external service for analysis.
Adaptive TDEE
Your calorie goal adjusts automatically, based on real weight progress instead of rigid formulas.
Meal Templates
Save frequent meals as templates and add them again with a single tap.
Custom Foods
Create custom foods with individual nutrition values, perfect for home-cooked meals.
Intermittent Fasting Timer
Circular countdown timer with protocols (16:8, 18:6, 20:4, OMAD). Streak tracking and fasting history.
GLP-1 Companion Mode
Injection log with site rotation, side effect tracking, and food tolerance tagging.
Weekly Insights
On-device analytics: calorie compliance, pattern detection, weight prediction. All computed locally, no cloud.
PDF/CSV Export
Generate professional reports for your doctor. Weight history, nutrition data, and GLP-1 data at a glance.
A diary, not a referee.
Three decisions kerntrack makes differently.
One target for the day, not a running tally
Go over your target and the bar changes colour. No minus, no warning, no message about it. Steps from a connected watch count too, week by week rather than live.1
One reminder a day, not five
You choose what goes in it: food, water, weighing. On a day when nothing is due, the phone stays quiet. The scale asks once a week, not every day.2
Three answers, not one
A scanned barcode is found, unknown, or known with the nutrition values still missing. In the third case you enter them from the packet, on the free plan too, and the next scan has them.
Simple, fair pricing
Start for free. Upgrade when you want more. No pressure, no fine print.
BASIS
- Calorie & macro tracking
- Barcode scanner (unlimited)
- 3M+ foods (Open Food Facts)
- 100% ad-free
- Offline tracking (templates & custom entries)
- Encrypted backup & restore
- Not included: Adaptive TDEE
- Not included: AI photo recognition
- Not included: Wearable sync
PRO
- Everything in BASIS
- Adaptive TDEE algorithm
- AI photo recognition (Gemini)
- Nutrition details
- Wearable sync (Health Connect, Oura & smart scales)
- Meal templates
- Custom foods
- Copy meal
- Not included: Intermittent fasting timer
- Not included: GLP-1 companion mode
- Not included: On-device insights
- Not included: Personalized meal plans
COACH
- Everything in PRO
- Intermittent fasting timer
- GLP-1 companion mode
- On-device insights & analytics
- Personalized meal plans
- PDF/CSV export for doctor visits
The kerntrack Honesty Promise
- One-month free trial
- Cancel in 2 clicks. No hidden retention flows
- Export your data anytime. CSV & PDF in the COACH plan
- Monthly means monthly. The price is shown before purchase
Your data belongs to you
Turn off your internet and open the app: your diary is still there, because it lives on your phone. Search, the scanner and photo recognition need a connection.
Stored on your device
Your diary lives in a database on your phone, not on a server. Photo recognition (PRO) sends the photo to an external service for analysis, and only after you agree.
No tracking, no ads
No Facebook SDK, no Google Analytics, no ad network. Nobody counts how you use the app.
EU servers (Frankfurt)
If you create an account, your email address is stored on servers in Frankfurt. Your diary is not stored there: it lives on your phone.
Backups only you can read
Your backup is an encrypted file that you store yourself. kerntrack keeps no copy and can recover neither the file nor your password.
Get started in 3 steps
No complicated setup. Just download and go.
Download the app
Download kerntrack for free from the Google Play Store.
Set up your profile
Enter your name, body data, and your goal. Your calorie target is calculated automatically.
Start tracking
Track your meals, scan barcodes, and watch your progress. Done!
Ready to get started?
Download kerntrack now: free, ad-free, and forever.
Free. Ad-free. Forever.
- 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.