A simple blood pressure log

Home blood pressure readings only become useful once they are written down somewhere you can find them again. If your clinical team has asked you to take readings at home, a slip of paper by the monitor quickly turns into a muddle of figures with no clear order. Kidney Tracker gives those readings a home: a quick entry, a timestamp, and a chart that turns a scatter of numbers into something you can actually read.

Record systolic, diastolic and pulse

Each entry holds your systolic and diastolic values, plus pulse if you measure it. You type the numbers from your monitor and the app stamps the entry with the time, so a morning reading and an evening reading sit in the right order through the day. There is nothing extra to fill in and nothing the app asks of you beyond the figures themselves.

A trend you can read

Once you have a handful of readings, the app plots them over time. A chart makes a run of readings far easier to take in than a list, and lets you scroll back to any date to see exactly what was recorded. If your team likes to see how things have moved over a week or a month, the shape is already there for you.

Just the record — no interpretation

Kidney Tracker keeps your readings and charts them. It does not flag a number as high or low, it does not offer an opinion, and it does not give advice. What your readings mean, and what to do about them, is entirely a matter for your own clinical team. The app's job is simply to make sure the readings are there, accurate and in order, when you need them.

Bring it to your appointment

When a clinic visit comes up, you can turn your readings into a printable, shareable report. It is generated on your device and goes only where you choose to send it; the app keeps no copy and the developer never sees it. That saves the awkward reconstruction of a fortnight's readings from memory and gives whoever you are seeing a clear record to work from.

Private, and part of a wider log

There is no account, no sign-up, no analytics and no advertising — everything stays in a database on your own iPhone. Blood pressure can sit alongside the other things your team may have asked you to track, including weight, fluid in and out, medications and blood results, so it all lives in one place. Deleting the app removes the data with it, so keep your device backed up while you rely on the log.

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.