Privacy Policy

Renvi: Kidney Diet Tracker · Last updated September 27, 2026

Renvi is a kidney-diet food diary. What you eat, the limits you enter and your settings stay on your iPhone. There are no accounts, no server that stores your diary, and we don't sell or share your data.

What stays on your device

• Foods and drinks you log, with portion, time and meal.
• The daily limits you type in (potassium, phosphorus, sodium, protein, fluid) and your answers to the first-run questions.
• Foods you create yourself.
• PDF reports you make. They leave the app only when you share them yourself.

Food data

Nutrient values come from USDA FoodData Central (SR Legacy), a public-domain database built into the app. Looking up a food never sends anything over the network.

Purchases

Every Renvi Pro payment, recurring or one-time, is handled by the App Store on Apple's side. Renvi receives only the status of your purchase, never your payment details. We use a subscription-management service (Adapty) that receives an anonymous app-install identifier, purchase status and your first-run answers in general form (which nutrients you watch, whether you are on dialysis) to validate purchases and measure how the paywall performs. It never receives your food diary or your limits.

Analytics and tracking

Renvi does not track you across apps or websites, does not use advertising identifiers and contains no third-party analytics beyond the subscription service above. There are no ads.

Deleting your data

Remove any entry with the ✕ next to it, or delete Renvi from your iPhone to remove everything it stored.

Not medical advice

Renvi is a food diary, not a medical device. It does not diagnose, treat or give medical advice, and it does not set limits for you — the limits are the ones your care team gave you. Always consult your doctor or dietitian before changing your diet.

Children

Renvi is not directed at children under 13.

Changes

When Renvi starts handling information differently, this page is rewritten first and the date at the top moves forward.

Questions: netkaktakto@gmail.com