# Oxal AI — Kidney Stone Prevention > Clinical guideline-based kidney stone prevention app with personalized hydration and diet tracking. (iPhone/iPad app by Obinna Onwude.) - Source: https://appshunter.io/ios/app/oxal-ai/id6755481914 (this page in markdown: same URL + `.md`) - Developer: [Obinna Onwude](https://appshunter.io/developer/1854136439) - Category: Health & Fitness - Price: Free with in-app purchases - Rating: 1.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 15.1 · 48 MB - Languages: English - Released: 2026-03-10 - Data updated: 2026-07-01 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/oxal-ai/id6755481914/reviews.md ## What is Oxal AI? Kidney stone prevention that actually works. Oxal AI uses clinical guidelines to stop calcium oxalate stones with personalized hydration targets, smart sodium tracking, and calcium-oxalate pairing—the three strategies urologists recommend. 94% OF USERS STAY STONE-FREE If you've passed a stone, you know the pain. Oxal AI helps you prevent the next one—without food diaries, barcode scanning, or guesswork. Our users average 14+ months stone-free vs. the typical 50% recurrence rate. HOW OXAL AI PREVENTS STONES Most apps just remind you to drink water. Oxal AI targets the three proven prevention factors: ▸ Personalized Hydration — Hit 2.5L urine output based on your body weight, activity, and local weather—not generic "8 glasses" ▸ Smart Sodium Tracking — Stay under 2,300mg daily without weighing food or scanning barcodes ▸ Calcium-Oxalate Pairing — Get instant prompts to pair high-oxalate foods (spinach, almonds, chocolate) with calcium at the same meal INTELLIGENT FEATURES Smart Contextual Reminders → "It's 2pm and you're at 40%—drink 500ml now" → "You logged spinach but didn't pair calcium" → "Tomorrow is 95°F—your target increases to 3.0L" Stone-Safe Meal Library → 30+ pre-built meals with calcium pairing done for you → One-tap logging—no calorie counting → Filter by breakfast, lunch, dinner, or snacks Daily Stone Risk Score → 0-100 score based on today's adherence → Track improvements week over week → Motivating gamification that actually works Heat Day Protection → Weather-aware hydration targets → Automatic adjustments on hot days → Never get dehydrated in summer 7-Day Friend Challenges → Accountability with friendly competition → Private progress sharing (friends see % only) → Stay motivated together Apple Health Integration → Auto-sync from smart water bottles → Works with HidrateSpark, Thermos Smart Lid → Zero manual logging required WHAT UROLOGISTS SAY "I recommend Oxal AI to all my kidney stone patients. The science is solid and it actually changes behavior." — Dr. James L., Board-Certified Urologist PERFECT FOR YOU IF • You've had calcium oxalate kidney stones • Your doctor said "drink more water and watch oxalate" • Generic water reminder apps haven't worked • You want to avoid another ER visit • Kidney stones run in your family PREVENTION YOU'LL STICK WITH Unlike complicated diet trackers: • Under 2 minutes per day • No barcode scanning • No calorie counting • Focus only on what prevents stones SIMPLE PRICING Try free for 3 days, then: • Annual: $99/year ($8.25/mo) — Save $67 • Monthly: $12.99/month Cancel anytime. 30-day money-back guarantee. YOUR DATA STAYS PRIVATE • Local storage by default • Optional encrypted cloud sync • We never sell health data • HIPAA-compliant infrastructure • Delete your account anytime Less than your ER copay. Download Oxal AI and take control of your kidney health. Legal Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.oxal.ai/privacy-policy Medical Disclaimer: Oxal AI is a wellness tool based on American Urological Association guidelines and is not a replacement for medical advice. Always consult your urologist for personalized guidance. ## Key features - Personalized hydration targets - Smart sodium tracking - Calcium-oxalate pairing - Stone-safe meal library - Daily stone risk score - Apple Health integration - 7-Day friend challenges ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Annual Offer | $99.99 | per year | | Monthly Subscription Offer | $12.99 | per month | ## Frequently asked questions about Oxal AI ### How does Oxal AI help prevent kidney stones? Oxal AI focuses on three key strategies recommended by urologists: personalized hydration targets, smart sodium tracking to stay under 2,300mg daily, and calcium-oxalate pairing for high-oxalate foods. These features aim to reduce the risk of calcium oxalate stone formation. ### What are the subscription options for Oxal AI? Oxal AI offers a free trial for 3 days. After the trial, users can choose between a monthly subscription for $12.99 or an annual subscription for $99.99 per year, which saves users money compared to the monthly plan. ### Does Oxal AI have ads? Yes, Oxal AI contains advertisements. As a free app with in-app purchases, advertisements are part of the user experience. ### How accurate is Oxal AI's data? The app uses clinical guidelines and personalized data like body weight and activity to set hydration targets, aiming for accuracy beyond generic recommendations. It also integrates with Apple Health for auto-syncing from compatible smart water bottles. ### What is the user sentiment for Oxal AI? Based on the provided rating, Oxal AI has received 1.0 stars from 1 rating. This indicates a very low user satisfaction score at this time. ### Is Oxal AI safe for children? Oxal AI has an age rating of 4+, making it suitable for younger users. The app's focus on health and hydration is generally appropriate for this age group. ### How often is Oxal AI updated? The latest version of Oxal AI is 1.3.1, which was last updated on April 13, 2026. This suggests a relatively active development cycle for the application. ### What devices support Oxal AI? Oxal AI is available on iPhone, iPad, and iPod devices. This broad compatibility ensures it can be used across various Apple mobile devices. ## Version history (last 5 releases) ### 1.3.1 — 2026-04-13 Performance upgrade ### 1.3 — 2026-03-25 We've Made Things Better — and Faster. Fresh new designs, improved performance, and lightning-fast load times. The experience you love, now optimized for you. ### 1.2 — 2026-03-18 Improved Design and Faster load time ### 1.1 — 2026-03-14 New Design Improvements and Faster performance ### 1.0 — 2026-03-10 No release notes. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-01.*