Peptide Tracker & Calculator alternative: same maths, different ledger

The calculator is not the differentiator here

Plenty of comparison pages in this category can point at a missing calculator. This one cannot, and it would be dishonest to imply otherwise. Peptide Tracker & Calculator's own listing describes recording vial concentration in mg or mcg, vial size in ml, the reconstitution liquid used, and a calculation aid that works from your specific vial concentration to the amount you intend to draw.

Pinned's calculator solves the same problem and adds a second direction: you can start from the units you want to draw and get the dilution that produces them, rather than only working forwards from the diluent volume. It also carries concentration, remaining volume and discard date on each vial so the number stays attached to the thing it describes.

If the calculator is all you need, both apps have one, and 451 ratings against zero is a straightforward argument for the established option.

The numbers, as of 30 July 2026

iOS 16.4 against Pinned's 18.0 is the row with practical consequences: Peptide Tracker & Calculator installs on phones Pinned will not.

Vial provenance versus ledger breadth

The two apps have spent their effort in different places, and both choices are defensible.

Peptide Tracker & Calculator went deep on the vial as an object. Its listing describes storage conditions, source, batch number and expiration date as fields you record, with low-stock indicators warning before a vial runs out. If you care about being able to look back and say exactly which batch from which source you were using in a given month, that is built for you, and Pinned does not record source or batch number at all.

Pinned went wide on the record instead. A testosterone or HRT schedule sits in the same timeline as a peptide and a GLP-1, plus oral medications and nasal sprays, so there is one history to read rather than several. It tracks remaining volume and discard dates per vial, but it is not trying to be an inventory provenance system.

One publisher, three focused apps

Worth knowing when you are choosing: the same developer publishes three apps in this comparison set — Peptide Tracker & Calculator, TRT Tracker, and Anabolic Steroid & TRT Tracker — each aimed at a distinct category.

That is a coherent strategy, and it means each app can use the vocabulary of its own audience without compromise. It also means that if your record spans two of those categories, you are choosing between running two apps or accepting that one of them is not built for half of what you log. Pinned's single-ledger approach is the answer to that specific problem, and it is worth exactly as much as that problem is worth to you.

Which to pick

Pick Peptide Tracker & Calculator if your log is peptides and GLP-1s, if batch and source records matter, or if your phone cannot run iOS 18.

Pick Pinned if the same record needs to hold TRT or HRT too, if you want it in Dutch, French or German, or if you want no account and no server holding a health record — accepting that this also means no sync and no cloud backup.

FAQ

Does Pinned's calculator work backwards?

Yes. You can go from vial size and diluent volume to syringe units, or pick the units you want to draw and get the dilution that produces them. Concentration, remaining volume and discard date are tracked per vial. The full calculator is part of Pinned Pro.

Can Pinned record a vial's source or batch number?

No. Pinned records concentration, remaining volume and discard dates. Peptide Tracker & Calculator's listing describes source, batch number and storage conditions as recorded fields, so if provenance tracking is why you want an app, it is the better fit.

Which one runs on an older iPhone?

Peptide Tracker & Calculator listed iOS 16.4 as its minimum on 30 July 2026; Pinned listed 18.0. Pinned will not install on a device that cannot run iOS 18.

Do I need two apps if I run peptides and TRT?

Not with Pinned — peptides, TRT, HRT, GLP-1s, orals and nasal sprays share one schedule and one history. Whether that is worth switching for depends on how much of your record falls outside peptides.

Does either app recommend how much to draw?

Pinned does not. It converts numbers you enter and records what you log; it does not recommend compounds, sources, amounts or protocols, and it is not a medical device. Always consult a licensed clinician before starting or changing anything.