I build Pinwise, which is one of the six apps on this page. So weigh what I say about my own app accordingly. I tried to write the rest the way I would want it written if someone else were comparing my app to theirs. Every price, rating count and privacy label below comes from the US App Store listing as of September 30, 2026. Those change, so check the listing before you pay for anything.
The short version
| App | Best for | Price | Apple privacy label | Ratings |
|---|---|---|---|---|
| Peptide Tracker | Most features for zero dollars, plus a community | Free. Optional supporter purchases | Data Linked to You | 2,358 at 4.9 |
| Shotsy | GLP-1 medications only, injections or pills | Free, with subscriptions from $9.99 a month | Data Not Linked to You | 32,731 at 4.8 |
| Regimen | Tying doses to Apple Health, labs and daily markers | Free for one compound. $7.99 a month or $49.99 a year | Data Linked to You | 462 at 4.8 |
| PeptideKit | Journaling how each day went, with a lifetime option | Free download. Plus from $3.99 a week, or $69.99 once | Data Not Linked to You | 305 at 4.7 |
| Pepio | A simple, cheap log | Free download. Purchases from $3.99 | Data Used to Track You | 2 |
| Pinwise (mine) | No account, no server, and AI on your own key | Free tracking. Pro $7.99 a month, $49.99 a year, or $129.99 once | Data Not Collected | Too new to show |
Apple's privacy label is written by each developer, not audited by Apple. It is still the one place every app has to answer the same questions, which is why I used it.
What I actually compared
Every app here logs a dose and reminds you about the next one. That part is solved. The differences that matter once you have used one for a few months are narrower:
- Price after the first week. Some are fully free, some are free for one compound, and some put most of the app behind a purchase.
- Where your log lives. On your phone only, in your own iCloud, or on the developer's servers tied to an account.
- Whether it handles more than one kind of protocol. A weekly GLP-1 shot, a daily stack, and a 20 day run that stops on its own are different scheduling problems.
- What it does with the history. Charts, lab trends, exports, or just a list.
Peptide Tracker Log & Reminder
This is the one I would point most people to if price is the only thing that matters. It is free with no subscription and no paywall, it ships updates every few days, and the feature list is long: stacks, vial and supply inventory that adjusts as you log, injection site tracking, built-in reconstitution and syringe unit calculators, weight tracking, progress photos, and a calendar of your full dose history. It also has a community section where people answer each other's questions under a username.
The tradeoff is that it runs on accounts. The listing describes deleting your account from inside the app, and its Apple privacy label says it collects health data, email, and identifiers linked to you. If you are fine with that, it is hard to argue with free.
Shotsy
Shotsy is by far the most rated app in this space, with over 32,000 ratings. It is built for GLP-1 medications and nothing else, weekly injections and daily pills both, and it goes deep there: side effects, calories, protein and water, Apple Health import, and charts of estimated medication levels. Data stays on your device and syncs through your own iCloud.
If GLP-1 is your whole protocol, Shotsy is the obvious one to try first. If you also run peptides, TRT or HRT, it was not built for that, and you will end up keeping a second log somewhere.
Regimen
Regimen is the most complete of the paid ones. It covers peptides, GLP-1s, TRT and HRT, and its strength is pulling everything into one picture: Apple Health sync for sleep, heart rate and blood pressure, 50+ daily markers you can log, bloodwork you can scan in from a photo or PDF, progress photos, on and off cycles, and a PDF report you can hand to your doctor. It also imports a CSV from another app, which matters if you are switching.
You get one compound free. More than one needs Premium at $7.99 a month or $49.99 a year, with a 14 day trial. The listing says your data is encrypted and synced across your devices, and the privacy label reads Data Linked to You.
PeptideKit
PeptideKit leans toward how you felt, not just what you logged. Journal entries attach to specific injections, and there are progress categories for things like energy, sleep and focus alongside weight. It has flexible schedules, a calendar that shows completed and missed injections, exports you can share, and a built-in AI chat assistant.
Pricing is a bit of a maze on the listing, with weekly, monthly, yearly and lifetime Plus options. The $69.99 lifetime option is the one I would look at if you plan to use it for a long time.
Pepio
Pepio is small and new, with two ratings as I write this. It covers GLP-1s and peptides together, has reminders and calculators, and its purchases are the cheapest on this list. The listing notes that features require a purchase, and its privacy label is the only one here that says Data Used to Track You. Worth watching, too early for me to say more.
Pinwise
I built Pinwise because my own tracking was a mess, and the thing I wanted most was for none of it to leave my phone. There is no account, ever, and no Pinwise server at all. Your log lives on your device. Apple's privacy label reads Data Not Collected, and there are no ads and no analytics SDKs.
The free tier is all of the tracking: unlimited compounds, reminders, cycles that run themselves (on and off patterns, date windows, a single 20 day run), inventory with low stock alerts, biometrics, lab imports, and your full history. Pro adds an AI advisor and data export. The advisor runs on your own API key from Anthropic, OpenAI or xAI, or on Ollama running locally, and the key is stored in the iOS Keychain. Your conversation goes from your phone to the provider you picked, with no server of mine in the middle.
Where it falls short, honestly: it is iPhone only. It is the newest app on this page, so it has none of the rating history the others have earned. There is no community. And the AI needs a key and an account with a provider, which you pay them for directly.
So which one?
- You only take a GLP-1: Shotsy.
- You want everything for free and do not mind an account: Peptide Tracker.
- You want doses lined up against Apple Health and bloodwork, and will pay for it: Regimen.
- You care most about journaling how each day went: PeptideKit.
- You want nothing to leave your phone, or you want to use your own AI: that is why I built Pinwise.
If you are still working out the math on a vial before you log anything, the free reconstitution calculator on this site shows the arithmetic step by step.