FAQ
Frequently asked questions
Everything people ask before and after they start. Still stuck? Write to us on the support page.
Is Zru & Hudnu free?
Yes. You can track calories and macros for free. Premium is optional and adds extras like curated recipes and the day-balancer.
What does Premium include?
Premium unlocks curated recipes, the day-balancer that suggests foods to fit your remaining calories, and other extras. You can start free and upgrade whenever you like.
How do I cancel my subscription?
Premium is billed through your Apple ID, so you can view or cancel it anytime in Settings › Apple ID › Subscriptions on your iPhone.
Can it scan barcodes?
Yes. Point your camera at a package and the product lands in your diary with calories and macros already filled in. No barcode? Photograph the nutrition label instead.
Can I log a meal from a photo?
Yes. Snap your plate and the app recognises the food and estimates its calories and macros for you.
Can it read my blood tests?
Yes. Upload a PDF or photo of your lab results: the app recognises the markers, shows what is out of range, and builds personal lists of foods to prefer or pause. Retest later and compare the dynamics of every marker. It is guidance, not medical advice.
Which blood tests should I take?
A basic panel is enough to start: fasting glucose, HbA1c, lipid panel (total cholesterol, LDL, HDL, triglycerides), ALT and AST, uric acid, creatinine, ferritin, a complete blood count, vitamin D and TSH. Take it in the morning after 8 to 12 hours without food and no alcohol for a day or two. A PDF from the lab is read without errors; if you photograph the pages, hold the phone straight and keep the reference range column in the frame.
Full list with lab names and preparation →Does it remind me to drink water?
Yes. Set a daily water goal and the app sends gentle reminders and shows your progress. A glass is logged in one tap.
Does it work with Apple Health?
Yes. With your permission it reads steps and workouts from Apple Health, so the calories you burn count toward your day automatically. You can turn it off anytime.
Can I set my own calorie and macro goals?
Yes. We suggest targets from your profile and goal, and you can adjust your calorie and macro goals to whatever suits you.
Which devices are supported?
Zru & Hudnu is available on iPhone via the App Store and on Android via Google Play.
Is my data private?
Your nutrition data is stored in your account and never sold. Apple Health data is used only to calculate your targets. See our privacy policy for the full details.
How do I delete my account?
You can delete your account and its data from the app settings, or by writing to [email protected].