The voiding diary app for the chart your clinic asked for

Why the paper chart usually fails

The paper voiding diary has a design problem that has nothing to do with medicine: it asks you to carry a folded A4 sheet and a pen everywhere you go for three days, and to fill it in inside a bathroom that may not be your own. The predictable result is a diary reconstructed at the end of the day from memory, which quietly removes the reason the chart was requested. Timing is the signal. A void at 02:10 and a void at 06:40 mean something different from “twice overnight.”

The second problem is legibility. A chart completed in a hurry, in a cubicle, with a pen balanced on a cistern, is the document your clinician then has to read volumes off. Anything that reduces transcription between what happened and what your urologist sees is worth having.

Three things a clinic might mean

“Voiding diary” gets used loosely, and the sheet you were handed may be any of three instruments. The International Continence Society separates them:

Micturition time chart

Times only: when you passed urine, across the recording period. No volumes, no intake. It answers questions about frequency and daily distribution and nothing else, and it is the least burdensome to keep.

Frequency volume chart

Times plus the volume passed each time. This is the one that needs a measuring jug. It gives your clinician your functional bladder capacity, your total daily output, and how much of that output happens overnight - the numbers behind a nocturia assessment.

Bladder diary

The full record: times, volumes, everything you drink, plus leaks, urgency, pad changes and any symptoms. This is what most people are handed when a clinic says “voiding diary”, and it is the version that supports a diagnosis rather than just describing a pattern.

If you are not sure which you were asked for, keep the fuller version. Extra detail can be left out of a report; detail you never recorded cannot be added back.

What the guidelines ask for

Bladder diaries are not an optional extra in the assessment pathway - they are recommended in it. NICE guidance on urinary incontinence and pelvic organ prolapse in women asks for a minimum of three days of diary, covering variations in usual activities such as working and leisure days. NICE guidance on lower urinary tract symptoms in men likewise recommends a frequency volume chart as part of initial assessment.

The common thread is that three days spanning different kinds of day beats three identical ones, and that the diary is meant to be filled in as things happen. Follow whatever your own clinic specified, since local protocols vary.

What to record, and how

For each void: the time, and the volume if you were given a jug. For each drink: the time, roughly how much, and what it was - caffeine, alcohol and carbonated drinks are common bladder irritants, so which drink it was can matter as much as how much. For each leak: when it happened and what you were doing, since leaking on a cough or a sneeze points somewhere different from leaking on the way to the bathroom.

Two details are worth recording separately because they are almost always asked about. The first is nighttime voids - the ones that woke you. The second is your first void of the morning, which is counted differently from the rest because it represents overnight production.

Urgency is worth rating even when nobody asked. A diary that shows twelve voids says one thing; a diary that shows twelve voids of which nine arrived with a sudden urge you could not defer says something considerably more specific.

How Vesi keeps the record

Vesi is built around the assumption that logging happens in the moment, standing in a bathroom, one-handed. A drink, a void or a leak takes a few taps. Volume, duration, urgency and pain are each optional per entry, so the diary you keep matches the chart you were asked for instead of forcing every field on you. Nighttime and first morning voids are tracked as their own categories.

Your entries stay on the iPhone. There is no account to create, nothing is uploaded, and nothing is shared until you build a report and send it yourself - which for a document listing your bathroom habits in fifteen minute detail is the property that matters most.

When the recording period ends, the PDF export assembles the report: you choose whether duration, urgency, pain, leaks and comments appear, so you can hand over a bare intake and output chart or the complete picture. Logging is free for as long as you use the app; the trend charts and the PDF export unlock together with one purchase, with no subscription.

Bringing it to the appointment

Export the PDF before you travel rather than in the waiting room, and bring it in a form that does not depend on signal - emailed to yourself, or printed. If your clinic gave you a specific form, bring that too; the app’s report supplements the paperwork rather than replacing whatever your urologist’s system expects.

The appointment is short. Arriving with three days of timed, legible data means it starts from what your bladder actually did, instead of from what you can remember about it.