Kidney Stone Tracker

Kidney Stone Tracker is an independent app. It is not affiliated with, endorsed by or operated by NIDDK, NIH or any other government entity, and it does not represent a government entity. Some oxalate reference figures in the app draw on published guidance from NIDDK (National Institute of Diabetes and Digestive and Kidney Diseases, part of the U.S. National Institutes of Health). Source: https://www.niddk.nih.gov/health-information/urologic-diseases/kidney-stones/eating-diet-nutrition

Kidney stones come back for many people who have had one, but small daily habits move the odds in your favor. Kidney Stone Tracker is a simple, private logger that helps you build those habits: drink enough water, watch high-oxalate foods, keep an eye on your urine pH, and keep a clear record of every stone episode to bring to your urologist.

Your log stays on your device. No account, no sign-up, no cloud.

KEY FEATURES

• Hydration tracking with a live water ring. Quick-add common amounts or a custom volume in ml or oz, and see how far you are from your daily goal.
• Oxalate food database. Search 150+ foods with reference oxalate values, color-coded into Very Low, Low, Moderate, High and Avoid tiers, then log servings against a daily oxalate budget.
• Urine pH log and trend. Record readings on a 4.5–8.5 scale and watch them against a target band (presets for general, uric-acid and calcium-stone goals).
• Stone-episode history. Record date, side, suspected composition, pain level, treatment (ESWL, ureteroscopy, PCNL, stent, ER visit) and notes on a clean date-grouped timeline.
• 7-day charts: water vs goal, oxalate intake and urine pH, to spot patterns at a glance.
• 30-day summary export for your urology visit, as a PDF or a CSV file, covering hydration, oxalate, pH and your stone history.
• Gentle hydration reminders: optional nudges through the day that stop once you reach your daily goal.
• Day and night themes, 24 languages, ml or oz units, and it works offline.

WHY CHOOSE KIDNEY STONE TRACKER

It is focused and private. There is no social feed and your log never leaves your phone. The oxalate reference data is drawn from published sources (NIDDK/NIH, Mayo Clinic, Harvard T.H. Chan School of Public Health and the University of Chicago Kidney Stone Program), so the numbers you log have a sensible basis. The interface is quick enough to use several times a day, which is how prevention habits stick.

PERFECT FOR

• Anyone who has passed a kidney stone and wants to avoid the next one.
• People told by a doctor to increase fluids or follow a low-oxalate diet.
• Calcium-oxalate, uric-acid, struvite or cystine stone formers who want to track urine pH.
• Caregivers keeping a hydration and diet log for a family member.
• Anyone preparing for a urology appointment who wants their history in one place.

PREMIUM

Premium removes ads, unlocks your full stone-episode history (the free version shows your most recent episode) and gives unlimited PDF and CSV export of your 30-day summary. Free users can unlock a single export by watching a short ad. Premium is available as a one-time lifetime purchase and, where offered, as a monthly or yearly subscription.

IMPORTANT This app is an informational logging tool only. It does not diagnose, treat, cure, or prevent kidney stones or any other condition. Oxalate values and pH ranges are published reference figures for general information and vary by food and preparation. Always consult your urologist or doctor for diagnosis and treatment, and never delay professional care because of anything in this app.

Start logging today and walk into your next appointment prepared.

Recent changes:
• The oz setting now applies everywhere: dashboard, goal, buttons and reports.
• pH, servings and water can be typed with a comma (6,5).
• 30-day averages count only the days you logged.
• Reminders stop once you reach today's goal.
• Double-tapping Save no longer creates duplicates.