Kidney diet tracker for iPhone

Kidney diet numbers you can check.

Renal Diet is a food log for people who count potassium, phosphorus, sodium, protein and fluid. Every food value comes from USDA FoodData Central and carries its FDC id, so you can open the source and check the number yourself.

• 7,332USDA foods in the offline database
• 155common foods with their own page
• 10food groups
• 1source on every value

Start with the three most-searched questions

• Low potassium foods

  Potassium in one standard serving of 155 common foods, lowest first, with the National Kidney Foundation's 200 mg per serving line applied and labeled as NKF's.

• Low phosphorus foods

  Foods ranked by USDA phosphorus per serving. No official per-serving cutoff exists in the sources we use, so we rank instead of inventing one, and explain additives and absorption.

• Renal diet food list

  The same foods grouped by food group, with potassium, phosphorus, sodium and protein per serving side by side.

Also: what a renal diet tracks, the CKD food list by nutrient, a transparent kidney-friendly ranking and the index of every food page.

How the numbers are sourced

1. One database. USDA FoodData Central, Foundation Foods 2026-04-30 and SR Legacy 2018-04. Public domain (CC0).
2. One formula. USDA publishes nutrients per 100 g. A serving is the nutrient per 100 g times the serving's grams divided by 100. Rounding happens only for display.
3. One id per row. Each food shows its USDA FDC id with a link to the USDA record.
4. Named guidelines only. The only thresholds shown are published ones, labeled with who published them. Where a source gives no number, we say so. See sources.

What the app does

• Offline USDA food database with the source on every value. No account and no barcode scanner.
• Personal daily limits that you enter, taken from your nephrologist or dietitian.
• "Can I eat this?" traffic light against what is left in today's budget.
• Fluid tracker and a PDF report you can share with your dietitian.
• Free to start. Some features may need an optional premium subscription.

What this website does not do

It does not diagnose, treat or tell you what to eat. Individual limits depend on your kidney function, labs and treatment, and are set by your care team. The pages here are reference tables, not a diet plan.