Is this meal safe for your kidneys? Find out in 30 seconds with a photo.
Nefra reads your plate and tells you the potassium, phosphorus, sodium and protein on it. The guidance is KDIGO-based. Nefra is being developed in line with EU MDR Class IIa requirements, with CE marking planned after clinical validation.
3 free AI scans a day. No credit card.
Example result
Potassium: Safe
Within your daily limit
The Everyday Worry
From guessing at every meal to knowing in seconds
Every plate feels like a risk
You read labels, search the web and still are not sure. One wrong meal can push your potassium too high — and you find out too late.
You eat with confidence
Snap a photo, get a clear safe or not-safe answer, and stay inside your daily limits without the stress.
Simple Process
Three steps to safer meals
No complex setup. No manual data entry. Just take a photo and let Nefra do the rest.
Take a photo of your meal
Snap a picture with your phone. No barcode scanning. No searching long food lists.
Takes about 5 seconds.
See your kidney nutrients in 30 seconds
Nefra reads your plate and shows the potassium, phosphorus, sodium and protein on it.
Clear, simple numbers.
Get a simple safe / not safe answer
You get an instant warning if a meal is high in something your kidneys should avoid.
Know before you eat.
Why You Can Trust Nefra
Built on KDIGO clinical guidance
Nefra is built for people living with chronic kidney disease. Every potassium, phosphorus, sodium and protein limit follows KDIGO clinical guidance.
Nefra turns a photo of your meal into the kidney nutrients that matter — potassium, phosphorus, sodium and protein — so appointments with your care team can focus on what to do next.
Based on KDIGO clinical guidance
What You Get
Everything you need to eat with confidence
Know what is on your plate
Get a breakdown of potassium, phosphorus, sodium and protein from one photo — no guessing.
See if your diet is working
Watch how your meals line up with your GFR and creatinine results over time.
Limits made for your stage
Your daily nutrient limits are set for your CKD stage, based on KDIGO guidelines.
Reports your doctor can read
Create a clear PDF of your nutrition, vitals and medication trends to bring to your nephrologist.
Your data moves with you
Export your full record in HL7 FHIR R4 with SNOMED CT & LOINC coding, so any clinic can use it.
Always in your pocket
Install Nefra on your phone from your browser and open it like any other app. Scanning needs an internet connection.
Anywhere You Shop
Check a food before it reaches your basket
Nefra works right in the supermarket aisle. Scan a product, see how it fits your kidney limits, and shop without second-guessing. Scanning needs an internet connection.
- Install it on your phone for quick access
- A clear safe / not-safe answer at the shelf
- Keeps a running total of your day
For Clinics
Spot potassium risks between visits
Give your nephrology patients a simple way to track their diet between visits, so you can see their potassium trends early and talk about them at the next appointment.
- See patient nutrition data between visits
- FHIR R4 export that plugs into your records
- Clinic-branded referral tracking
- Doctor-ready PDF reports with trends
How Nefra Compares
Made for kidneys, not just calories
| Feature | Nefra | MyFitnessPal |
|---|---|---|
| Photo food scan | Yes | Partial* |
| Potassium & phosphorus tracking | Yes | Partial* |
| Limits set for your CKD stage | Yes | No |
| KDIGO-based guidance | Yes | No |
| Doctor-ready PDF reports | Yes | No |
*Partial: MyFitnessPal offers photo-based logging on a paid plan, and can track potassium but generally not phosphorus. Based on publicly available information, October 2026.
Pricing
Start free. Upgrade when you are ready.
Every plan includes daily AI food scans and all 5 tracked nutrients.
Free
3 AI scans a day. Build the habit.
- 3 AI food scans a day (photo or text)
- All 5 nutrients tracked (K, P, Na, protein, calories)
- 7-day food diary history
- KDIGO-based daily limits
- Custom food database
Essential
Full history, weekly reports and more AI scans.
- Everything in Free
- 12 AI food scans a day
- Unlimited food diary history
- Weekly progress reports + PDF export
- Email reminders & alerts
FAQ
Questions people ask us
What is Nefra Health?
Nefra is a diet tracker for people living with chronic kidney disease. Take a photo of a meal, or describe it, and Nefra estimates the potassium, phosphorus, sodium, protein and calories, then compares them with your daily limits.
Does Nefra replace my doctor or dietitian?
No. A decision-support tool; clinical validation is in planning. Not a substitute for professional medical advice. Always talk to your nephrologist or renal dietitian before changing your diet or medication.
Which foods are safe for CKD?
It depends on your CKD stage and your blood results, so there is no single list that suits everyone. Foods often lower in potassium include apples, berries, grapes, cabbage, cauliflower and peppers. Foods often higher in potassium include bananas, oranges, potatoes and tomatoes. Phosphorus is often high in dairy, nuts, seeds, dark colas and processed foods with phosphate additives, and processed foods such as canned soups and deli meats are often high in sodium. Your renal dietitian can tell you which limits apply to you.
How does Nefra track nutrients?
AI identifies the foods in your photo or description and estimates the potassium, phosphorus, sodium, protein and calories. You see your daily totals against limits based on your CKD stage and KDIGO guidelines, along with your trends over time. The values are estimates, not laboratory measurements: portion sizes can vary and hidden ingredients such as added salt may not be detected.
How accurate is the food analysis?
Accuracy depends on photo quality and how visible the food is. The guidance is KDIGO-based. Nefra is being developed in line with EU MDR Class IIa requirements, with CE marking planned after clinical validation. Our accuracy targets and validation plan are published on the Science page.
Which subscription plan suits me?
Free (£0) includes 3 AI food scans a day, all five tracked nutrients and 7 days of diary history, so it is a good place to start. Essential (£4.99/month) adds 12 scans a day, unlimited diary history, weekly reports with PDF export and email reminders. Premium (£9.99/month) adds 30 scans a day, FHIR R4 export, caregiver sharing and priority support. See the Pricing page for the full list and current availability.
Is my health data protected?
Data is sent over encrypted connections and handled under UK GDPR and the Data Protection Act 2018. We do not sell your personal data. You can export your data or ask us to delete your account from your privacy settings at any time. Food photos and descriptions are sent to third-party AI providers for analysis; our Privacy Policy explains who processes your data and why.
Do I need an internet connection?
Yes. Food analysis runs in the cloud, so scanning needs a connection. You can install Nefra on your phone from your browser for quick access.
Which languages does Nefra support?
The Nefra app is currently available in English.
Can my clinic use Nefra?
Clinics can request a pilot by emailing us. We will explain what is available for your service.
Take control of your kidney health today
Join people with kidney disease who check their meals in seconds. Start free — no credit card required.