A daily companion for living with chronic kidney disease and dialysis — built by someone who does it three times a week. Track what matters, photograph what you don't understand, and keep your whole care picture in one place. Almost all of it is free, permanently — see exactly what's free and what's paid below.
Works in any browser. Add it to your home screen and it behaves like an app.
One thing in this app costs money. Everything else is free, permanently — no trial, no account, no catch.
Every new account gets full Premium access free for 30 days. This is the only feature that costs anything, because each camera scan calls a paid AI vision service — so after the trial, continued Premium access is granted through an access code rather than an automatic monthly charge. Don't want to wait on a code? Every scan type also has a free type-it-yourself version — see Free, above.
There is no sign-up, no account, and no health database on our end. Everything you log — labs, weights, medications, journal entries — is stored in your own browser and never leaves your phone unless you choose to export or share it. That is a deliberate design decision, not a limitation: the safest place for your medical history is your own pocket. The trade-off is real and worth knowing — clear your browser data and it is gone, so use Back Up My Health Data in Settings.
Each one is a tab along the bottom of the screen.
The screen you open every morning. What needs doing, and what already got done.
Point your camera at something you don't understand and get it explained in plain language.
The long view. Numbers only mean something when you can see them move.
Kidney care involves a lot of people. This keeps them straight.
The part that answers questions at 11pm when the clinic is closed.
Your data, your rules.
Kidney disease looks different depending on the stage. Here's what tends to matter most at each one.
Start with the basics before anything else.
Built by someone who does this three times a week.
The evaluation process has a lot of steps to keep straight.
You're tracking almost as much as they are.
Four tools, all driven by a photo. Take the picture, get an answer you can actually read.
Photograph the printout. It pulls out your values and tells you what each one means and which direction is the good direction.
Photograph the bottle or the pill. Identifies it and flags anything that matters for kidney function.
Type in or photograph the nutrition panel — free either way. Checks the sodium, potassium and phosphorus against a renal diet.
Describe what you're feeling. Gives you guidance on whether it's a call-the-clinic or a watch-and-wait.
Photograph a restaurant menu. Get your 3 safest picks, what to watch out for, and an exact line to tell your server — "no salt, dressing on the side" — not just a vague warning.
Checks your own medication list for the best timing — with meals, empty stomach, spaced from your binders — and flags combinations worth a conversation with your pharmacist. Never tells you to start, stop, or change a dose.
Only the camera-based scans above (lab report, medication label, menu) cost anything, and even those are free for your first 30 days. Full pricing and the complete free-feature list are in Free vs. paid, in plain numbers, near the top of this page.
This is a tool for understanding your own information, not a doctor. It does not diagnose, it does not prescribe, and it does not replace your nephrologist or your dialysis team. If something feels wrong, call them — that is what the ER card is for.
Where this genuinely stands today.
A website cannot read Apple Health directly. HealthKit is a native iOS feature and Apple deliberately gives web pages no access to it, for the same privacy reasons that make it trustworthy in the first place. Any web app claiming a live two-way Apple Health sync is not doing what it says.
There are three real routes, and they are not equal:
Option 1 is live. It is the only one that keeps your data on your device.
No. There is no sign-up and no password. Open it and start using it. That is also why your data lives on your device — there is no account for it to live in.
Your data is on that device, so it goes with it. This is the real cost of the privacy model, and it is why Back Up My Health Data exists in Settings. Do a backup now rather than after you need it.
Yes, with one exception: camera photo scanning (labs, medications, menus). That's free for the first 30 days on every account, because each scan costs us money to run. After the trial, continued access is granted through an access code rather than an automatic subscription charge. Everything else — including the type-it-yourself version of every scan tool — is free permanently. See the full breakdown above.
Yes. It runs in any modern browser. On a phone you can add it to your home screen and it opens like a normal app.
There's a "Share with a caregiver" option in Settings, but be aware: it currently only works if they open the link on the same device you generated it on — for example a second browser tab on your own phone. It does not yet work for a caregiver checking your dashboard from their own separate phone. We're not going to pretend it does more than it does — a real cross-device version is on the roadmap.
Michael Moore, who has been on dialysis three times a week for years and got tired of tracking all of this on paper. More about that here.
This goes straight to his inbox — not a support desk, not a ticket queue. He built this app for his own dialysis life, so if something is broken or missing, he wants to know.
Michael's kidney books walk through the diagnosis, dialysis, and everyday reality this app tracks. See the books →
Planning a trip while on dialysis takes real coordination. See dialysis & travel support →
You do not need to set anything up. Open it, log one thing, and see if it helps.
Open Kidney Navigator →Medical disclaimer. Kidney Navigator is an information and tracking tool. It does not provide medical advice, diagnosis or treatment, and nothing in it — including anything produced by the AI scanner or Ask MAV — should be used in place of guidance from your nephrologist, dialysis team or pharmacist. In an emergency, call 911.