Terms of use
Concise, genuine terms for the STACK app, this website and the free tools on it. Not final legal language; a reviewed version replaces this before store release.
What STACK is
STACK is a personal protocol-tracking tool for peptide and GLP-1 regimens. It helps you log doses, side effects, weight and progress photos, and shows you educational estimates — like an estimated-level curve — based on the data you enter. This website describes the product and offers three free tools built from the same math.
Not medical advice
STACK does not provide medical advice, diagnosis or treatment. Nothing in the app or on this site — including the peptide calculator, the level simulator, the titration planner, the estimated-level curve or any reference compound data — is a recommendation about what or how much to take, or when. The tools convert and display numbers you enter; they never propose a dose, a step or a schedule. Always follow your prescriber's or pharmacist's instructions and confirm calculations independently before acting on them.
The free tools
The tools on this site run in your browser. Their state lives in the page address so you can share a link; we store nothing you type. Results are only as correct as the numbers you enter, and you are responsible for checking them against your vial label and your prescription.
Your account and data
STACK works without an account; your data is stored locally on your device in an encrypted database and is not uploaded anywhere by default. If you choose to sign in for sync, your entries are stored for your account only, as described in the privacy policy. You are responsible for your device's security and for keeping a copy of your data if you want one outside the app.
STACK Pro
STACK Pro is an optional, auto-renewing subscription — $79/year — that unlocks the analysis layer described on the pricing page: the full-range estimated-level curve, unlimited active protocols, the clinician PDF report, and the in-app calculator. Free stays free and keeps everything needed to track.
On the web, STACK Pro is billed by Pickleball Paradise through Stripe, to the card or payment method you provide at checkout. It renews automatically at the end of each paid year unless you cancel first, at the then-current price. Manage or cancel a web subscription any time from Stripe's billing portal, linked from your account page. Cancelling stops the next renewal; your Pro access continues until the end of the year you already paid for, then the account reverts to Free — your data is never deleted or locked because of a plan change. We do not offer partial refunds for time left on a cancelled year, unless the law where you live requires one; if a charge looks wrong, write to the support address on the privacy page and we will make it right.
If STACK Pro is ever offered through an app store instead, that purchase is billed and managed through the store you bought it from, renews automatically until cancelled there, and is subject to that store's own terms and refund policies instead of the above.
No sales, sourcing or endorsement
STACK does not sell, source, or recommend any substance, and does not link to anywhere that sells one. References to compounds are for tracking and education only and are not claims about safety, efficacy or regulatory status beyond the cited source.
Use at your own risk
STACK is provided “as is,” without warranties of any kind. To the extent permitted by law, the developer is not liable for any decisions made using information logged in or displayed by the app or this site.
Changes
These terms may be updated as the product evolves. Continued use after an update means you accept the revised terms.