PeptidePal alternative: two libraries, one that will not show you a dose

The scope is genuinely similar

Most comparison pages in this category can lean on a scope difference. This one cannot. PeptidePal's own listing describes GLP-1 tracking, research peptides and TRT in one place, with a reconstitution calculator that draws a live syringe illustration and warns when the maths does not fit the barrel. Pinned covers peptides, TRT, HRT and GLP-1 in one ledger, with a reconstitution calculator in both. Those are close to the same product description.

PeptidePal is also considerably more established: 4.68 stars from 3,231 ratings as of 30 July 2026, against Pinned's zero. Anyone choosing on evidence of use should choose PeptidePal today.

The numbers, as of 30 July 2026

Both required iOS 18.0 on that date, so device reach is not a deciding factor between these two. Ratings move; the date is stated because a number without one is a claim, not a fact.

Where the two apps actually diverge: the reference layer

PeptidePal's listing describes a library of 50+ peptides with mechanisms, half-lives, commonly-researched dosing ranges, side effects and contraindications, a set of pre-built multi-compound stacks you can spin up with sane defaults, and an educational AI advisor. That is a substantial amount of work and it is clearly what many of its users are there for.

Pinned's catalog is not smaller in the way you might expect — 86 compounds against 75 cited sources, with half-life data on most entries. What it will not do is show you an amount. Non-label doses are set to hidden, research-compound dosing is blocked pending review, and compounds default to unsafe-for-recommendation. Open an entry and it says Label only or Dose hidden; the catalog's own menu describes it as browsing identity templates with no dose advice.

That distinction matters more than a feature count. Pinned's Terms state the app does not recommend compounds, sources, amounts or protocols — and the catalog carries a per-compound display policy rather than relying on an author to remember that on every screen. Each row shows "Label only" or "Dose hidden" and renders no amount.

So this is the honest fork in the road, and it is narrower than 'library or no library'. If you want an app that tells you what people commonly take, Pinned does not, and PeptidePal is built to. If you want reference data that stops short of that line by construction, Pinned is the one that does.

Smaller differences worth knowing

A few concrete things separate the two beyond the editorial stance.

• HRT: Pinned names hormone replacement alongside TRT as a first-class category rather than a subset of testosterone protocols
• Languages: Pinned ships in English, Dutch, French and German
• Storage: the record stays on the device — no account, and no cloud sync of any kind. Backup is an encrypted file you hold, not a server copy
• Export: CSV and the clinician-facing PDF report are available inside Pinned
• Access: Check the current Pinned App Store listing for access, eligibility, price and terms; current terms and price appear in the App Store before purchase
• No AI advisor in Pinned, of any kind

Which to pick

Choose PeptidePal if you want the dosing ranges — that is the thing Pinned will not give you at any price — or its curated stacks, which name amounts where Pinned's multi-compound templates set up the compounds and leave every dose at zero — or if a live syringe illustration helps you trust the calculation, or if 3,231 ratings are what makes you comfortable handing a health app your record.

Choose Pinned if your record spans TRT or HRT as well as peptides and GLP-1s, if you want it in Dutch, French or German, or if you want reference data that carries a per-compound policy on whether an amount may be shown, and currently shows none.

FAQ

Does Pinned have a compound library?

Yes — 86 compounds against 75 cited sources, with half-life data on most entries, plus anything custom you enter. What it will not show is an amount: non-label doses are hidden and research-compound dosing is blocked by configuration, so entries read "Label only" or "Dose hidden". PeptidePal's library is the more explanatory of the two and publishes commonly-researched ranges; Pinned's catalog shows none.

Which app has the better reconstitution calculator?

They solve the same problem differently. PeptidePal's listing describes a live syringe illustration with an over-capacity warning. Pinned's is dose-first — vial size and diluent volume and your intended dose, returning the units to draw — and carries concentration, remaining volume and discard dates per vial. Check the current Pinned App Store listing for access, eligibility, price and terms; the App Store shows current access and price before purchase.

Is PeptidePal more trustworthy because it has more ratings?

More ratings mean more people have used it and said something publicly, which is real evidence and Pinned has none of it. It is not the same as an audit of either app's maths or privacy. Both are worth checking yourself against a known calculation before you rely on them.

Can I move my history from PeptidePal to Pinned?

There is no import path between them. Pinned lets you backfill past doses without breaking the record, so a manual catch-up is possible, but a long history will take real effort to re-enter.

Do either of these apps recommend a protocol?

Pinned does not. It is a personal record-keeping tool, not a medical device, and it provides no medical advice, diagnosis, treatment or dosing recommendations. Always consult a licensed clinician before starting or changing anything.