See what your stack costs, and what you could save

Stack Almanac now shows you two numbers on Today that used to take a spreadsheet to work out: what your current stack roughly costs you each month, and how much of that you could save by buying each supplement from its cheapest source. The figures sit at the top of Today as a small Almanac Advisor preview, in GBP, with no setup required.

How much does my supplement stack cost each month?

Open Today and you will see an estimated monthly spend for your current stack right at the top. The figure is built from the per-dose price of every supplement on your list (using each product's cheapest GBP source), multiplied by how often you take it. It is an estimate, not an invoice, but it gives you the first honest read most people ever get on what their routine actually costs.

Next to it is a "Save up to" figure. That is the gap between what you would spend buying each supplement from its cheapest GBP source today versus what you would spend buying the same supplements at average market price. If you switch a few items to better-priced equivalents, that is the headroom you are leaving on the table.

The numbers stay consistent across devices and surfaces. If Today shows you a £42/month spend on your phone, it will not contradict itself in next Sunday's digest or anywhere else in the app.

What's the full Stack-health readout?

The spend and savings figures are a preview of a larger Stack-health readout built into the Almanac Advisor, which is part of Pro. The full readout adds the clinical layer to the cost layer: under-dosed supplements, anything pushing past upper safe limits, accidental duplicates between products, and interactions worth knowing about.

In short, the free Today strip tells you what your stack is costing you. The Pro readout tells you what it is doing for you, and what to do about anything off.

Can I stop the app marking supplements as taken on my behalf?

Yes. Stack Almanac has always assumed your regular supplements are taken once their dosing window ends, on the principle that logging should be the exception, not the rule. With this release that behaviour becomes an explicit choice.

New users see it during signup: a clear question about whether the app may mark a dose as taken once its window passes, with the trade-off spelled out (less daily tapping versus more conservative records). You pick one, and you can change your mind any time from Settings → Logging. Existing users keep the previous behaviour by default, so nothing changes underfoot, but the same toggle is now there for everyone.

On Today, the small visual change that goes with this: supplements are no longer shown as done when the only thing that happened is the auto-log heuristic kicking in. A confirmed dose looks different to an assumed one, so you can tell at a glance which is which.

What else changed on Today?

Today reads a touch tighter. The meal sub-section is denser, the current dosing block is surfaced as a Now marker, and overall the screen wastes less vertical space before you get to anything useful. The advisor's replies also pace themselves paragraph by paragraph for longer answers, instead of dumping the whole reply at once, so a stack analysis or recommendation reads as a series of beats rather than a wall of text.

How do I start using this?

Open Stack Almanac. The spend and "Save up to" figures will appear on Today as soon as your stack has any recognised products. If you are a new user signing up today, you will be asked about auto-logging during onboarding. Existing users can flip the toggle under Settings → Logging at any time. No update to install beyond opening the app.