What your data says back

Get a straight verdict from your own data

Insights is the weekly read Stack Precision writes from your own record: once a week the app reads your logs and hands you what your data ties together. Put a hunch on watch and it holds that one against your entries for weeks, then closes it with an answer.

A weekly insight card noting that sleep quality averaged higher the day after the evening wind-down stack, marked as a pattern in your data, not a proven cause.

A weekly read. The app noticed your sleep quality tended to run higher the day after your evening stack, and marks it as a pattern, not a cause.

The weekly read

What lands on your Insights tab each week

At the start of each week a short set of reads appears on the Insights tab, written from the entries you already logged. Each one names an association it found in your own data, a pattern between two things you track, and says plainly where the pattern is not strong enough to lean on. Nothing here is a diagnosis or a proven cause.

Watch items, closed

Every watch closes one of three ways

Hand it something you suspect, a hunch you logged, your genetics, or a research run, and it watches for weeks against your entries. Then it closes: confirmed, didn't hold, or expired. A close either earns the bottle its reorder or frees up the money.

A confirmed watch close: next-day stress tended to track lower alongside an ashwagandha pattern, held across the watch window as an association in your own data, not a proven cause.
A non-committal watch close reading 'No clear pattern yet' for an rs4680 magnesium hunch: you logged consistently, but the pattern was not strong enough to call either way.

You can keep up to four watches open at a time, so each one gets enough of your data to mean something.

Receipts

See exactly what every answer drew from

Open any result and a sheet names its receipts: the journal entries it read and the supplement tracking it counted, right down to the dates. Tap through and read the very entries behind the pattern for yourself.

The 'See the data behind this insight' sheet, listing dated journal entries and the supplement tracking it counted, with a reminder that this is a pattern, not a cause.

On purpose

How a trial you set resolves

When you want an answer faster, put one thing to the test on purpose. The trial rides on the logging you already do, and when the window ends a reflection prompt catches what changed while it is still fresh. It then closes the same three ways a watch does. Change a dose instead of stopping, and the readout contrasts the two levels side by side, so you see which way your own numbers leaned.

Let your own data settle the argument

Log for a few weeks and let the first verdict surface.

Always free. On iOS and Android.