Peppy vs Peptide Tracker: free-forever or no-account?
Peptide Tracker is a free-forever protocol tracker for peptides and GLP-1s on iPhone and Android with a calculator, plasma curve, site rotation and vial inventory synced through an account, so pick it for free-forever or Android. Peppy matches those on iPhone with no account, a 13-site body map, Apple Health and PDF export, with Pro at $29.99 a year.
| Feature | Peppy | Peptide Tracker |
|---|---|---|
| Platform | iPhone only (iOS 18+) | iPhone, Android, and a free web calculator |
| Compounds covered | 123 built in: GLP-1s plus research peptides, custom allowed | GLP-1s, peptides (BPC-157, TB-500, GHK-Cu, CJC-1295, ipamorelin), NAD+, TRT/HRT, custom |
| Reconstitution calculator | Yes, free. Inline and standalone | Yes, in-app and on the web, to U-100 units |
| Medication level / half-life chart | Yes (Pro). 'Active in your system' curve for about 62 compounds | Yes, estimated plasma curve from logged doses and half-life |
| Injection site rotation | Yes, free. 13-site body map, suggests the next site; heat-map (Pro) | Yes, use count and last-used date per site, suggests the longest-unused |
| Reminders | Yes (Pro) | Yes |
| Vial / pen inventory | Yes (Pro). Doses left, runs-out date, running-low alert | Yes: powder, reconstituted vials and BAC water, doses left per vial |
| Titration and cycles | Yes (Pro). Dose ladder auto-advances; on/off cycles | Cycles mentioned within protocols; titration not listed |
| Apple Health | Yes, free. Weight in and out | Not listed |
| Price | Free tier; Pro $29.99/yr or $5.99/wk, 7-day trial | '100% free, with no subscription and no paywall' |
| Account required | No. On-device plus your iCloud | Account sync; 'no account required to start' |
Compared against Peptide Tracker's public website and App Store listing on 2026-08-30. If something changed, tell us and we will fix it.
Who each app is for
Peppy vs Peptide Tracker is a fair fight, and the honest opening line is that Peptide Tracker costs nothing. The app at peptidetracker.ai (App Store name "Peptide Tracker") says every feature is available to every user with no subscription and no paywall. It covers GLP-1s such as semaglutide, tirzepatide and retatrutide alongside BPC-157, TB-500, GHK-Cu, CJC-1295 and ipamorelin, has a reconstitution calculator (also free on its website), an estimated plasma level curve, site rotation and a vial inventory that distinguishes powder from reconstituted vials. It runs on iPhone and Android. If free-forever or Android is your constraint, stop reading and install it.
Peppy is for the iPhone user who wants the same job done with no account and a few more Apple-native touches: a body map instead of a list of sites, Apple Health weight in and out, Lock Screen widgets, and a PDF you can hand your doctor. It has a free tier that covers one protocol and a $29.99 a year Pro tier for the rest.
Feature by feature
The table reflects each app's own site or App Store page as of 2026-08-30.
Calculator. Even. Both convert vial strength, diluent volume and target dose into U-100 syringe units. Peppy's is inline in the protocol editor so the units follow the protocol, and it warns when a dose will not fit a 1 mL syringe. Always verify with your prescriber.
Site rotation. Peptide Tracker shows each site's use count and last-used date and highlights the one unused longest. Peppy does the same on a 13-site front and back silhouette: tap the site, see "last used 6 days ago", and the suggestion rotates across every protocol you run. Pro adds a heat-map. See injection site rotation.
Inventory. Peptide Tracker tracks sealed powder, reconstituted vials and BAC water with remaining volume and doses left, free. Peppy's inventory (Pro) is vials times doses per vial, "runs out around Oct 3", and a running-low alert. Peptide Tracker's is more granular and it is free.
Levels chart. Both estimate an active-level curve from logged doses and half-life. Peppy's is Pro and covers about 62 catalog compounds; both apps call theirs an estimate.
Apple Health, export, widgets. Peptide Tracker's site does not list Apple Health, and export is by contacting the developer. Peppy reads and writes weight with Apple Health on the free tier, exports a multipage PDF or CSV (Pro), and has Next Shot, Streak, Today and Weight widgets (Pro).
Titration and cycles. Peptide Tracker mentions cycles within protocols but not titration. Peppy stores a dose ladder that auto-advances and on/off blocks that skip off days automatically (Pro).
Check-ins. Peptide Tracker logs weight trends. Peppy's daily check-in records weight, up to 28 side effects and 12 feelings on a 1 to 5 scale, a note and a progress photo (Pro), and the Progress tab (Pro) plots them against dose days and step-ups so you can see what a compound is doing to you.
Pricing
Peptide Tracker: free, no subscription, no paywall, per its site.
Peppy: free for one active protocol with logging, calendar, calculator, check-ins, site rotation, Apple Health and iCloud. Pro is $29.99 a year or $5.99 a week with a 7-day trial, and unlocks reminders, insights charts, unlimited protocols, cycles and titration, inventory, photos, export and widgets. If you run one compound, Peppy's free tier is enough; if you run a stack, Peptide Tracker is cheaper.
Privacy and data
Peptide Tracker keeps your data "private to your account" and shares nothing unless you post it; sync runs through that account, and a press release says no account is required to start. Peppy has no account at all. Data stays on your iPhone and in your own iCloud, with no server in between. See private peptide tracker.
How to do this in Peppy
- Protocols tab, tap +, search your compound. Set dose, schedule and color; the catalog fills in the typical frequency.
- Open the Calculator in the editor: vial mg, water mL, dose. Peppy shows "Draw up N units".
- Calendar: tap the days you already dosed and choose Add dose to bring your history and streak across.
- Settings: turn on "Sync weight with Apple Health" to import your weight trend.
- Add the rest of your stack (Pro) and let the body map rotate across all of it.
Track it in Peppy
123 compounds built in, the units math done for you, body-map site rotation and reminders — private on your iPhone.
Free · iPhone · no accountFrequently asked
Is Peptide Tracker free?
Yes. peptidetracker.ai says the app is "100% free, with no subscription and no paywall". Peppy is free for one active protocol and charges $29.99 a year or $5.99 a week for Pro.
Does Peptide Tracker track peptides like BPC-157?
Yes. It names BPC-157, TB-500, GHK-Cu, CJC-1295, ipamorelin, NAD+ and GLP-1s, plus custom compounds. Peppy covers the same and 123 in total, each with form, unit, half-life and dose ladder.
Which app has a body map for injection sites?
Peppy. Its Log shot sheet is a front and back silhouette with 13 sites and a suggested next site. Peptide Tracker tracks sites with a use count and last-used date and suggests the longest-unused one, but does not describe a map.
Does Peptide Tracker sync with Apple Health?
Its site does not list Apple Health. Peppy reads your weight history from Apple Health and writes every weigh-in back, on the free tier.
Why pay for Peppy when Peptide Tracker is free?
You may not need to. Peppy's free tier includes the calculator, body map, calendar, check-ins and Apple Health for one protocol. Pro buys reminders, unlimited protocols, cycles, inventory, charts, export and widgets, with no account and no server behind it.
Not medical advice. Peppy is a tracking tool, not medical advice. Dose calculations are mathematical conversions only. Always follow your prescriber's instructions and verify every draw-up yourself.