If you run more than one peptide at a time, sooner or later a notebook or phone notes app falls short. Here's a rundown of the most used apps today for calculating doses and tracking a peptide protocol — honestly, including where PeptiBrain fits and where it doesn't.
| PeptiBrain | Peptide Tracker | PeptIQ | PepCalc / PeptideCalc | Dose Track | |
|---|---|---|---|---|---|
| Real Spanish interface | |||||
| Reconstitution calculator | |||||
| Dose log (history) | |||||
| Vial tracking (expiry) | |||||
| Family plan | |||||
| AI assistant |
Not specified by the app itself, or we couldn't confirm it — we don't guess.
What a good peptide app should have
- Reconstitution calculator — that converts mg + water + dose into syringe units.
- Dose logging — an actual history, not just a one-off reminder.
- Vial tracking — how much is left and when it expires.
- Language support — a real, well-built interface in your language, not a half-translated one.
The most used apps
Peptide Tracker
One of the most established tracking apps in the space, free, available on iOS and Android. Combines a tracker and calculator, with solid coverage of the basic features.
PeptIQ
Goes a step beyond plain tracking: adds educational content on each peptide (mechanism, half-life, effects). Available on iOS, Android, and web.
PepCalc / PeptideCalc
Two apps focused specifically on the reconstitution calculator, with no signup required. A good option if you only need to calculate, without keeping a full protocol log.
Dose Track
Focuses on privacy (on-device calculation) and covers a wide catalog of compounds, with a more advanced calculation engine than the rest.
PeptiBrain
Full disclosure: we're not neutral here, so we'll say this as honestly as possible. Our main difference from most of this list is that we're bilingual (English and Spanish)from the ground up, not a half-translated add-on — and PeptiBrain adds dose logging, vial expiry tracking, a family plan to share tracking with others, and an AI assistant for general questions (which doesn't give medical advice), on top of the free reconstitution and semaglutide/tirzepatide calculators.
None of these apps replace a healthcare professional. All of them, PeptiBrain included, are organization and calculation tools — not diagnostic or prescription tools.
Which one to choose?
If you only need to calculate a one-off reconstitution, a standalone calculator (PepCalc, PeptideCalc) is enough. If you run several peptides at once and want history, vial tracking, and a properly bilingual experience, that combination is what we aim to offer with PeptiBrain.
You can try our calculators free and with no signup before deciding whether to move to the full app.
