Trusted by 10,000+ stone survivors
Trusted by 10,000+ stone survivors
Never Another
Kidney Stone
Never Another
Kidney Stone
The only prevention app that actually works. Personalized hydration, smart calcium pairing, and heat-day alerts—all in your pocket.
The only prevention app that actually works. Personalized hydration, smart calcium pairing, and heat-day alerts—all in your pocket.
3 day free trial
3 day free trial
No credit card required • Cancel anytime • 30-day money back guarantee
No credit card required • Cancel anytime • 30-day money back guarantee
Trusted by stone survivors everywhere
Trusted by stone survivors everywhere
Trusted by stone survivors everywhere
Based on 2,847 reviews
Download now
Download now
David R
2-year member
I spent $12,000 on my last stone episode. StoneCoach costs less than a single ER co-pay."
David R
2-year member
I spent $12,000 on my last stone episode. StoneCoach costs less than a single ER co-pay."
Michael T.
Phoenix, AZ
Finally something that actually works! The heat day alerts saved me this summer. No ER visits for the first time in 5 years.
Michael T.
Phoenix, AZ
Finally something that actually works! The heat day alerts saved me this summer. No ER visits for the first time in 5 years.
Dr. James L.
Urologist
As a urologist, I recommend this to all my stone patients. The science is solid and the execution is brilliant. Worth every penny.
Dr. James L.
Urologist
As a urologist, I recommend this to all my stone patients. The science is solid and the execution is brilliant. Worth every penny.
Sarah K.
Boston, MA
18 months stone-free after 3 episodes in 2 years. The calcium pairing reminders completely changed how I eat. This app literally saved my life.
18 months stone-free after 3 episodes in 2 years. The calcium pairing reminders completely changed how I eat. This app literally saved my life.
Precision Hydration Guidance
Precision Hydration Guidance
Oxal AI learns your body and daily habits to set the right water targets—so you stay protected, not just reminded.
Oxal AI learns your body and daily habits to set the right water targets—so you stay protected, not just reminded.
Automated Tracking & Analysis
Automated Tracking & Analysis
Your water, meals, and activity are logged and analyzed automatically—no spreadsheets or guessing.
Your water, meals, and activity are logged and analyzed automatically—no spreadsheets or guessing.
Evidence-Based Insights
Evidence-Based Insights
see how your choices affect your stone risk and get easy steps to improve every day.
see how your choices affect your stone risk and get easy steps to improve every day.
Adaptive Risk Alerts
Adaptive Risk Alerts
When it’s hot or your activity changes, Oxal AI adjusts your hydration goals instantly to keep you safe.
When it’s hot or your activity changes, Oxal AI adjusts your hydration goals instantly to keep you safe.
Hit Your Urine Target Daily
Hit Your Urine Target Daily
Hit Your Urine Target Daily
Not "8 glasses of water." Your personalized 2.5L urine output target based on your body weight. The only metric that actually prevents stones.
Not "8 glasses of water." Your personalized 2.5L urine output target based on your body weight. The only metric that actually prevents stones.
Not "8 glasses of water." Your personalized 2.5L urine output target based on your body weight. The only metric that actually prevents stones.
Track drinks and voids with one tap
Track drinks and voids with one tap
Track drinks and voids with one tap
Urine color check with printed reference card
Urine color check with printed reference card
Urine color check with printed reference card
Heat day auto-adjustment (+20% target)
Heat day auto-adjustment (+20% target)
Heat day auto-adjustment (+20% target)
Stay Under Your Sodium Budget
Stay Under Your Sodium Budget
Stay Under Your Sodium Budget
High sodium increases stone risk by 20%. Track your daily budget without scanning barcodes or weighing food.
High sodium increases stone risk by 20%. Track your daily budget without scanning barcodes or weighing food.
High sodium increases stone risk by 20%. Track your daily budget without scanning barcodes or weighing food.
Quick-add common high-salt foods
Quick-add common high-salt foods
Quick-add common high-salt foods
Restaurant meal estimates built-in
Restaurant meal estimates built-in
Restaurant meal estimates built-in
Visual budget meter keeps you on track
Visual budget meter keeps you on track
Visual budget meter keeps you on track
Pair Calcium with High-Oxalate Foods
Pair Calcium with High-Oxalate Foods
Pair Calcium with High-Oxalate Foods
Don't avoid spinach, nuts, or chocolate. Just eat calcium with them. It binds oxalate in your gut before it reaches your kidneys.
Don't avoid spinach, nuts, or chocolate. Just eat calcium with them. It binds oxalate in your gut before it reaches your kidneys.
Don't avoid spinach, nuts, or chocolate. Just eat calcium with them. It binds oxalate in your gut before it reaches your kidneys.
100+ high-oxalate foods with pairing tips
100+ high-oxalate foods with pairing tips
100+ high-oxalate foods with pairing tips
Smart prompts when you log oxalate meals
Smart prompts when you log oxalate meals
Smart prompts when you log oxalate meals
Track pairing adherence over time
Track pairing adherence over time
Track pairing adherence over time
Months Stone-Free
Hit Daily Targets
ER Visits This Year
Less Than Your ER Co-Pay
Less Than Your ER Co-Pay
Choose the plan that works for you
Choose the plan that works for you
$99
Annual Plan
$8.25/month • Save $67
Personalized hydration targets
Sodium budget tracking
Smart calcium pairing
Heat day alerts
Progress tracking & streaks
Export reports for your doctor
Download App
$99
Annual Plan
$8.25/month • Save $67
Personalized hydration targets
Sodium budget tracking
Smart calcium pairing
Heat day alerts
Progress tracking & streaks
Export reports for your doctor
Download App
$99
Annual Plan
$8.25/month • Save $67
Personalized hydration targets
Sodium budget tracking
Smart calcium pairing
Heat day alerts
Progress tracking & streaks
Export reports for your doctor
Download App
$12.99
Monthly Plan
Billed monthly
Personalized hydration targets
Sodium budget tracking
Smart calcium pairing
Heat day alerts
Progress tracking & streaks
Export reports for your doctor
Download App
$12.99
Monthly Plan
Billed monthly
Personalized hydration targets
Sodium budget tracking
Smart calcium pairing
Heat day alerts
Progress tracking & streaks
Export reports for your doctor
Download App
Frequently
Frequently
Asked Questions
Asked Questions
Will this actually prevent my next stone?
OxalAi implements the three evidence-based strategies from the American Urological Association guidelines: adequate hydration (2.5L urine output), sodium restriction (under 2,300mg), and calcium-oxalate pairing. Our users average 14+ months stone-free, compared to the typical 5-year recurrence rate of 50%.
Is this medical advice?
No. OxalAi is a wellness tool that helps you implement your doctor's prevention recommendations. We never diagnose, prescribe, or replace medical care. Always consult your urologist for personalized medical advice.
Do I have to log everything I eat?
No! OxalAI focuses on the three things that matter most: hydration tracking, high-salt foods, and high-oxalate meals. You don't need to scan barcodes or track every calorie. Most users spend under 2 minutes per day in the app.
What if I have uric acid or cystine stones?
OxalAi currently focuses on calcium oxalate stones (80% of all stones). The hydration tracking works for all stone types, but specialized diet guidance for other stone types is coming in Phase C of our roadmap.
Can I cancel anytime?
Yes! Cancel anytime with one tap in the app. No questions asked, no fees. Plus, we offer a 30-day money-back guarantee if you're not satisfied.
Do you share my health data?
Never. Your data is encrypted, stored locally by default, and only synced to the cloud if you opt in. We don't sell your data to anyone. Period.
Will this actually prevent my next stone?
OxalAi implements the three evidence-based strategies from the American Urological Association guidelines: adequate hydration (2.5L urine output), sodium restriction (under 2,300mg), and calcium-oxalate pairing. Our users average 14+ months stone-free, compared to the typical 5-year recurrence rate of 50%.
Is this medical advice?
No. OxalAi is a wellness tool that helps you implement your doctor's prevention recommendations. We never diagnose, prescribe, or replace medical care. Always consult your urologist for personalized medical advice.
Do I have to log everything I eat?
No! OxalAI focuses on the three things that matter most: hydration tracking, high-salt foods, and high-oxalate meals. You don't need to scan barcodes or track every calorie. Most users spend under 2 minutes per day in the app.
What if I have uric acid or cystine stones?
OxalAi currently focuses on calcium oxalate stones (80% of all stones). The hydration tracking works for all stone types, but specialized diet guidance for other stone types is coming in Phase C of our roadmap.
Can I cancel anytime?
Yes! Cancel anytime with one tap in the app. No questions asked, no fees. Plus, we offer a 30-day money-back guarantee if you're not satisfied.
Do you share my health data?
Never. Your data is encrypted, stored locally by default, and only synced to the cloud if you opt in. We don't sell your data to anyone. Period.
Will this actually prevent my next stone?
OxalAi implements the three evidence-based strategies from the American Urological Association guidelines: adequate hydration (2.5L urine output), sodium restriction (under 2,300mg), and calcium-oxalate pairing. Our users average 14+ months stone-free, compared to the typical 5-year recurrence rate of 50%.
Is this medical advice?
No. OxalAi is a wellness tool that helps you implement your doctor's prevention recommendations. We never diagnose, prescribe, or replace medical care. Always consult your urologist for personalized medical advice.
Do I have to log everything I eat?
No! OxalAI focuses on the three things that matter most: hydration tracking, high-salt foods, and high-oxalate meals. You don't need to scan barcodes or track every calorie. Most users spend under 2 minutes per day in the app.
What if I have uric acid or cystine stones?
OxalAi currently focuses on calcium oxalate stones (80% of all stones). The hydration tracking works for all stone types, but specialized diet guidance for other stone types is coming in Phase C of our roadmap.
Can I cancel anytime?
Yes! Cancel anytime with one tap in the app. No questions asked, no fees. Plus, we offer a 30-day money-back guarantee if you're not satisfied.
Do you share my health data?
Never. Your data is encrypted, stored locally by default, and only synced to the cloud if you opt in. We don't sell your data to anyone. Period.
Ready to Never Have Another Stone?
Ready to Never Have Another Stone?
Ready to Never Have Another Stone?
Join 10,000+ stone survivors who've taken control of their prevention
Join 10,000+ stone survivors who've taken control of their prevention
Download now
Download now
Start your 3 day free trial
Start your 3 day free trial
⭐️
4.8
App store
98%
Success rate
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© Copyright 2025, All rights reserved
COMPANY
Contact
© Copyright 2025, All rights reserved
COMPANY
Contact
© Copyright 2025, All rights reserved