The Only App Built for Kidney Stone Prevention
General nutrition apps track calories. We track the one nutrient that actually causes kidney stones. See how OxalateGuard compares to the alternatives.
Why a Specialist Beats a Generalist
General nutrition apps track calories, protein, and carbs. None of them track oxalate. That's like using a weather app to predict earthquakes — different problem, different tools.
Oxalate-First Database
2,548 foods with oxalate data from 15+ peer-reviewed sources. Not crowdsourced macro counts — lab-measured oxalate values.
Scan, Snap, Convert
Barcode scanning, restaurant menu photo analysis, and recipe URL conversion. No other app does all three for oxalate.
Consensus, Not Guesses
When Harvard says 50mg and Wake Forest says 200mg, we don't just pick one. Our algorithm identifies outliers and computes reliable values.
Data You Can Trust
Unlike apps that rely on crowdsourced nutrition data, every oxalate value in OxalateGuard comes from peer-reviewed research. When sources conflict, our algorithm resolves the disagreement.
Harvard, Wake Forest, MDPI, and international research databases.
Statistical outlier detection handles conflicting measurements across studies.
Tap any food to see which studies contributed to its value.
How We Compare
These are all great tools built by smart people. The difference? They weren't built for kidney stone prevention. We were.
| Feature | OxalateGuardFree / $3.33/mo | MyFitnessPal$6.67/mo | Cronometer$4.17/mo | Kidney PalFree |
|---|---|---|---|---|
| Oxalate tracking | ||||
| Peer-reviewed oxalate data | Partial | |||
| Consensus algorithm | ||||
| Barcode scanning | ||||
| Menu photo analysis | ||||
| Recipe URL converter | ||||
| Low-oxalate swaps | ||||
| Restaurant menu database | ||||
| AI diet coaching | ||||
| Multi-nutrient renal tracking | Partial | |||
| Calorie & macro tracking |
Prices shown as annual plan equivalent. MyFitnessPal Premium is $79.99/yr. Cronometer Gold is $49.99/yr. We respect all these products — they're great at what they do. They just weren't built for this problem.
What You Can Do With OxalateGuard
Snap a Restaurant Menu
Take a photo of any restaurant menu. AI identifies dishes, estimates oxalate for each one, and flags what to avoid.
Scan Any Barcode
Grocery shopping? Scan the barcode. We match ingredients against our database and estimate total oxalate per serving.
Convert Any Recipe
Paste a recipe URL or type ingredients. We break down oxalate per ingredient, flag the problem items, and suggest lower-oxalate swaps.
Track 4 Nutrients
CKD or dialysis? Track oxalate, sodium, potassium, and phosphorus with condition-aware daily limits.
AI Diet Coaching
Smart Insights analyzes your 14-day food log and identifies patterns — which meals push you over, which days you nail it, and what to change.
Community Scout
Contribute ingredient data from product labels. Help grow the database and earn badges while your data helps others.
A Kidney Stone Costs More Than You Think
The average kidney stone episode costs $10,000-30,000 in the US — ER visit, CT scan, urologist, potential surgery, lost work. And 50% of stone formers will have another within 5 years without dietary changes.
That's $40/year to help prevent a $10,000+ problem.
Built By Someone Who Gets It
“After my second kidney stone surgery, I hired a dietitian who literally had to Google ‘oxalates.’ I was terrified to eat anything. I restricted myself to chicken, rice, and lettuce — then accidentally added turmeric and cumin, both high in oxalate. I texted my friends: ‘F*** it, I'm going to build an oxalate tracker for people like us.’”
Matt Hudson
Founder, OxalateGuard — 2x kidney stone survivor
“If your dietitian has to Google 'oxalates,' maybe it's time for a purpose-built tool.”
The problem we solve
“50% of stone formers will have another within 5 years. Prevention is the only real solution.”
Why tracking matters