About PepCycle

Why it exists

We started by reading the public reviews of every peptide and GLP-1 tracker we could find. The same four complaints repeated across all of them, from different people, about different apps: history lost after an update, schedules that could not express an interval, vial fields that capped out below real vial sizes, and a price that only appeared after someone had typed in their medical protocol.

That list became the specification. Every notable decision in PepCycle traces back to one of those four, and the features page says which for each.

The boundary we do not cross

PepCycle is a record-keeping and arithmetic tool. It does not recommend, prescribe or adjust anything, and it never will. The reconstitution converter divides the numbers you enter, exactly as a calculator does — it has no knowledge of what you are taking and no opinion about whether the figure is sensible.

That is not legal caution dressed up as principle. An app cannot know your history, your prescriptions or your circumstances, so any number it suggested would be a guess presented with false authority. The same rule governs everything on this website: you will not find a dose, a schedule, a stack or a vendor anywhere on it. Our full position.

How this site is written

• No dosing, ever. Reference pages describe what a compound is, how it is supplied and how to record it. Where a number appears it is a packaging fact — “sold as 5 mg vials” — because that number is what the arithmetic needs.
• Regulatory status stated plainly. Where something is unapproved, prohibited in sport, or restricted from compounding, we say so rather than leaving it out.
• No claims about competitors. Comparison pages describe other products by their own public positioning and give you tests to run yourself. Feature lists date within weeks; a test does not. See the comparisons.
• Where we are the wrong choice, we say so. PepCycle is iPhone-only. If you use Android, use something else.
• No affiliate links and no sourcing advice. We do not tell anyone where to buy anything and earn nothing if they do.

Who this is for

People keeping their own records: someone on a GLP-1 medication who wants a timeline their prescriber can read, someone running research peptides who needs the arithmetic to stay correct across vials, and anyone who has already lost a log once and does not intend to again.

It is not a coaching product, a community, or a source of protocols. If that is what you are after, this is not it.

Contact

Corrections to anything on this site are genuinely welcome — if a factual claim here is wrong or out of date, tell us and we will fix it. Email [email protected], or see the contact page.