Comparison
Both apps help you log injections and stay on schedule. Here's how they compare across features, platforms, and who each one suits best — so you can pick the right tool for your protocol.
| Peptidy | Shotsy | |
|---|---|---|
| Log injections (dose, time, site) | ✓ | ✓ |
| GLP-1 tracking (semaglutide, tirzepatide) | ✓ | ✓ |
| Research peptide tracking (BPC-157, TB-500, etc.) | ✓ | Limited |
| Reconstitution calculators (17 compounds) | ✓ | — |
| Injection-site rotation history | ✓ | ✓ |
| Adherence tracking & streaks | ✓ | Varies |
| Body-metric tracking | ✓ | ✓ |
| Web app + iOS | ✓ | Mobile-focused |
| Educational compound library with citations | ✓ | — |
Comparison based on publicly available information and our own product at the time of writing. Competitor features may change — verify current details with each provider.
Shotsy is a polished, consumer-friendly app built primarily around GLP-1 weight-loss medications. If your goal is simply to remember your weekly shot, track your weight, and get reminders, it does that job cleanly and is easy to pick up.
Peptidy is built for people running broader or more precise protocols. Alongside GLP-1 tracking, it supports the wider research-peptide space, includes free reconstitution calculators for 17 compounds, and adds an educational compound library with citations to published sources. It runs on both the web and iOS, so your data isn't locked to a single phone.
The reconstitution calculators are a genuine differentiator: working out concentration and syringe units is one of the most error-prone steps in a peptide or GLP-1 protocol, and having it built into the same app you track in removes a lot of guesswork.
If you only track a single GLP-1 medication and want the simplest possible experience, Shotsy is a solid choice. If you run peptide protocols, want reconstitution maths built in, or prefer to manage your protocol on the web as well as your phone, Peptidy is the more complete tool.
Both let you log GLP-1 injections. Shotsy is a consumer app focused on GLP-1 weight-loss medications, while Peptidy covers GLP-1s and the wider research-peptide space, adds reconstitution calculators, and works on both web and iOS. If you only track a single GLP-1, either works; if you run broader protocols or want built-in calculators, Peptidy is the more complete fit.
Yes. Peptidy is available as a full web app and on iOS, so your protocol syncs across devices. Many injection trackers are mobile-only.
Peptidy includes free reconstitution calculators for 17 compounds. If precise reconstitution and syringe-unit maths matter to you, that is a core part of Peptidy that general GLP-1 trackers typically do not focus on.
Peptidy offers a free trial and a subscription for full access. The reconstitution calculators and educational library on the website are free to use.
Peptidy brings injection logging, reconstitution calculators, and an educational library together on web and iOS.