Fluid tracking for dialysis

Life on dialysis often involves keeping an eye on fluid between sessions, and that can be hard to do in your head across a busy day. Kidney Tracker is a small iPhone app that takes the maths off your plate: you log each drink, it totals the day for you, and it shows where you stand against a daily limit you have set yourself. It is not a clinical tool and it never decides anything for you — it is a tidy place to keep the numbers your own unit has asked you to watch.

Why fluid often matters between sessions

Because dialysis does much of the work the kidneys would normally do, fluid taken on between treatments can build up, and many people on dialysis are asked by their team to stay within a daily fluid limit and to keep an eye on their weight. The detail varies from person to person, which is exactly why Kidney Tracker never sets a number for you — you enter the target you have agreed with your unit, and the app simply adds up your day against it.

How the app helps you log it

Log every drink in millilitres, saving the amounts you use most so a common cup or glass is one tap. The Today screen keeps a live running total and shows how much of your daily allowance is left, so you are not trying to keep a tally in your head. You can record output too, and a configurable day-start hour means your totals can line up with a clinic's 24-hour chart rather than resetting at midnight. Record your weight whenever you like and follow it on a chart, alongside blood pressure, medications and any blood results you want to keep.

Choose your type of dialysis

Different treatments come with different routines, so we have written more detailed pages for each. If you are on hospital or home haemodialysis, the haemodialysis page covers logging interdialytic weight gain and staying within a fluid limit between sessions. If you are on peritoneal dialysis, the peritoneal dialysis page covers recording what goes in and out as fluid entries and keeping a daily net balance. Both use the same private, local-only app described here.

Private by design

There is no account, no sign-up, no analytics and no advertising. Everything you enter lives on your own iPhone, and when you have an appointment you can turn your records into a clean, printable report that goes only where you send it. You can read the full privacy policy for the details.

Kidney Tracker is a personal record-keeping tool. It is not a medical device and does not provide medical advice — always follow your own clinical team.