Your stack, in order.
Every dose, exactly where you left it.
The private log for your peptide protocol. No account. No server.
Notes app.
Spreadsheet.
Syringe math at 6am.
Cadence replaces all three.
How it works
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01
Set up your stack once.
Add each compound, its vial and your schedule.
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02
Log in two taps.
Tap Log a shot on Today and confirm. The time and site are saved with it.
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03
See where you are.
Today shows your next shot, what's logged and your estimated level.
From vial to syringe units.
Enter the powder, the BAC water you added and your dose. The Unit converter shows how many units to draw for your syringe size. Vials shows what's left in each one and marks it low before it runs out.
Shown as an aid. Check the arithmetic against your own protocol.
An estimate of where you are.
Every logged dose feeds a modelled curve built from the compound's half-life. Recorded levels are solid. The dashed line is projected decay.
A modelled estimate from logged doses and the compound's half-life. Not a measured blood level.
How estimates work
Fast logging, with site rotation.
When more than one compound is due, log them as one session with a shared site. Each entry keeps its dose, time and site.
The next site, already picked.
Choose the sites in your rotation and Cadence marks the one that's next up. Trends shows how often you've used each one.
Stepped plans and blends.
Turn on Step up dose over weeks and set the dose for each step. The final step becomes the maintenance dose. A blend sits in your stack as one line, with each compound in it tracked.
Widgets that keep it private.
See your next shot on the Home Screen and Lock Screen. The Lock Screen widget hides compound names by default.
What Cadence won't do.
Recommend doses.
Cadence records what you enter. It never suggests a compound, a dose or a schedule.
Sell anything.
No ads, no affiliate links and nothing to pay for inside the app.
Pretend to be a medical device.
It's a log. Estimates are labelled as estimates, and nothing in the app is medical advice.
Common questions.
Is it free?
Yes. There are no purchases in the app.
Is there an Android version?
No. Cadence is for iPhone.
What if I lose my phone?
If iCloud is on, your log comes back: sign in with the same Apple Account on your new iPhone and install Cadence. Settings such as units and reminders are set again on the new phone.
Does it tell me what to take?
No. Cadence records what you log. It never suggests compounds, doses or schedules.
Does it work with Apple Health?
With your permission, it reads weight, body-fat percentage, lean body mass, and dietary energy and protein from Apple Health. Nothing is written back.
Which iOS version do I need?
iOS 18.0 or later.