# Peppy vs Peptide Log: which private iPhone peptide tracker?

> Peppy vs Peptide Log: both private and iPhone-native. Calculator, concentration curves, phases, rotation, inventory, free tier. Verified 2026-08-30.

Source: https://peppytracker.com/compare/peptide-log/
Last updated: 2026-08-30

Peptide Log is a deep, private tracker for iPhone, iPad and Mac with multi-phase protocols, custom blends, concentration curves and inventory on a 7-day trial then $39.99 a year, so pick it for blends, multiple profiles or iPad. Peppy is iPhone-only, simpler, has a body map and a free tier that never expires, with Pro at $29.99 a year.

| Feature | Peppy | Peptide Log |
| --- | --- | --- |
| Platform | iPhone only (iOS 18+) | iPhone (iOS 18.6+), iPad, Mac and Vision |
| Compounds covered | 123 built in: 21 GLP-1s plus research peptides, custom allowed | Peptides, blends and GLP-1s (BPC-157, TB-500, semaglutide, tirzepatide, retatrutide named); custom blends |
| Reconstitution calculator | Yes, free. Inline and standalone | Yes, with diluent selection and batch management |
| Medication level / half-life chart | Yes (Pro). 'Active in your system' curve for about 62 compounds | Yes, pharmacokinetic concentration curves and widgets |
| Injection site rotation | Yes, free. 13-site body map, suggests the next site; heat-map (Pro) | Yes, color-coded with per-peptide restrictions and recommendations |
| Reminders | Yes (Pro) | Yes |
| Vial / pen inventory | Yes (Pro). Doses left, runs-out date, running-low alert | Yes, plus procurement tracking |
| Titration and cycles | Yes (Pro). Dose ladder auto-advances; on/off cycles | Yes, titration, maintenance and tapering phases; cyclical dosing |
| Routes and profiles | Injections, pens, capsules, topicals; one profile | Injectable, oral and nasal; multiple profiles |
| Apple Health | Yes, free. Weight in and out | Yes, weight sync |
| Price | Free tier; Pro $29.99/yr or $5.99/wk, 7-day trial | 7-day free trial, then $8.99/mo or $39.99/yr |
| Account required | No. On-device plus your iCloud | No account listed; iCloud backup. Privacy label: 'Data Not Collected' |

Compared against Peptide Log's public website and App Store listing on 2026-08-30. If something changed, [tell us](mailto:pat.tammaro9@gmail.com?subject=Compare%20page%20correction) and we will fix it.

## Who each app is for

Peppy vs Peptide Log pits two privacy-minded, Apple-native trackers against each other, and the difference is depth versus simplicity. Peptide Log, by an independent developer, is "for all your peptides, blends, and protocols". Its listing describes multi-phase protocols with titration, maintenance and tapering phases, cyclical dosing, custom blends, injectable, oral and nasal routes, multiple profiles, procurement tracking, a calculator with diluent selection and batch management, pharmacokinetic concentration curves with widgets, color-coded site rotation with per-peptide restrictions, side effects, progress photos and Apple Health weight sync. It runs on iPhone, iPad, Mac and Vision. If you mix your own blends, track more than one person, or want the app on an iPad, Peptide Log goes further than Peppy.

Peppy is the simpler take on the same idea. Search one of 123 compounds, and the Today tab, body map, calculator and calendar do the rest. It has a free tier with no expiry, costs less per year, and is iPhone only.

## Feature by feature

The table reflects Peptide Log's App Store listing and Peppy's app reference as of 2026-08-30. Peptide Log has no public website we could verify, so its store page is the source.

**Protocol depth.** Peptide Log wins. Phases (titration, maintenance, taper), custom blends, nasal and oral routes and multiple profiles are all listed. Peppy (Pro) handles a dose ladder that auto-advances and on/off cycles that skip off days, one profile, and injections, pens, capsules and topicals. For a 5 on/2 off [BPC-157](https://peppytracker.com/compounds/bpc-157/) run or a GLP-1 step-up that is plenty; for a three-phase blend protocol it is not.

**Calculator.** Both convert vial, water and dose to units. Peptide Log adds diluent selection and batch management. Peppy's is free, inline in the editor and standalone, and warns when a dose will not fit a 1 mL syringe. Always verify with your prescriber.

**Site rotation.** Peptide Log color-codes sites, lets you restrict sites per peptide and recommends the next one. Peppy shows a 13-site front and back body map, marks the suggested site, shows "last used 6 days ago" and rotates across every protocol, free, with a heat-map (Pro). Different presentations, same job. See [injection site rotation](https://peppytracker.com/guides/injection-site-rotation/).

**Levels, inventory, export.** Both have concentration curves (Peppy's "Active in your system" curve is Pro), both track inventory with alerts (Peptide Log adds procurement; Peppy adds a runs-out date), and both export. Peppy's export is a multipage PDF report or CSV built for handing to a doctor; Peptide Log lists backup, restore and export. See [export your dose log for your doctor](https://peppytracker.com/guides/export-dose-log-for-your-doctor/).

**Free tier.** Peppy only. Peptide Log's trial ends after 7 days; Peppy's free tier keeps one protocol, the calculator, body map, calendar, check-ins and Apple Health working indefinitely.

**Widgets and reminders.** Peptide Log lists concentration widgets and reminders. Peppy (Pro) has Next Shot, Streak, Today and Weight widgets for the Home and Lock Screen, and reminders for doses, a missed nudge at 30 minutes, 1 hour or 2 hours, check-ins, refills and a weekly photo, with a "Log it" action in the notification itself.

## Pricing

Peptide Log: 7-day free trial, then $8.99 a month or $39.99 a year.

Peppy: free for one active protocol with logging, calendar, calculator, check-ins, site rotation, Apple Health and iCloud, with no time limit. Pro is $29.99 a year or $5.99 a week with a 7-day trial and adds reminders, insights charts, unlimited protocols, cycles and titration, inventory, photos, export and widgets.

## Privacy and data

This is the one comparison on the site where the competitor's privacy story is as clean as Peppy's. Peptide Log's App Store privacy label reads "Data Not Collected", it lists no account, and it backs up to iCloud. Peppy has no account, no server, and syncs through your own iCloud; its export (Pro) is a file only you send. Either is a sound choice; see [private peptide tracker](https://peppytracker.com/guides/private-peptide-tracker/).

## How to do this in Peppy

1. Protocols tab, tap +, search your compound. Set dose, schedule, color, and a cycle or dose ladder if you run one (Pro).
2. Open the Calculator in the editor: vial mg, water mL, dose. Peppy shows "Draw up N units".
3. Calendar: tap the days you already dosed and choose Add dose to carry your history across. Missed and upcoming doses are computed, never duplicated.
4. Settings: turn on "Sync weight with Apple Health" to import your weight history.
5. Set vial counts in the protocol editor (Pro) so Today shows doses left and warns before you run out.

## Frequently asked

### Is Peptide Log free?

Peptide Log offers a 7-day free trial and then requires a subscription: $8.99 a month or $39.99 a year on the App Store. Peppy's free tier (one protocol, calculator, body map, calendar, check-ins, Apple Health) has no time limit; Pro is $29.99 a year or $5.99 a week.

### Does Peptide Log track peptides like BPC-157?

Yes. Its listing names BPC-157, TB-500, semaglutide, tirzepatide and retatrutide, and supports custom blends and multi-phase protocols. Peppy covers 123 compounds, each with form, unit, half-life and dose ladder.

### Which app is more private?

Both are strong. Peptide Log's App Store privacy label says "Data Not Collected" and it backs up to iCloud. Peppy has no account and no server, and syncs through your own iCloud.

### Does Peppy handle custom blends like Peptide Log?

Peppy has a catalog entry for the CJC-1295/Ipamorelin blend and lets you add any custom compound, but it does not model arbitrary blends of several peptides in one vial. Peptide Log is the better pick for that.

### Does Peppy work on iPad or Mac?

No. Peppy 2.x is iPhone-only. Peptide Log runs on iPhone, iPad, Mac and Vision.

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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.

Peppy is a free iPhone app (Pro subscription optional). App Store: https://apps.apple.com/us/app/peptide-tracker-peppy/id6775005514