# The best peptide tracker app in 2026: Peppy and eight alternatives, compared from their own sites

> Peppy, Shotsy, Glapp, Pep, Dose Track, Peptide Tracker, Regimen, LynkDose and MeAgain compared on compounds, calculator, level chart, platform and price.

Source: https://peppytracker.com/guides/best-peptide-tracker-app/
Last updated: 2026-08-30

The best peptide tracker app depends on what you inject. GLP-1-only users have Shotsy, Glapp, Pep and MeAgain, which add food logging. People running research peptides need a reconstitution calculator, a half-life chart and cross-protocol site rotation, which narrows it to Peppy, Dose Track, Regimen, Peptide Tracker and LynkDose. Peppy is iPhone-only, private by design, with 123 compounds built in and no AI coach.

## How this comparison was made

Every "best peptide tracker app" list on the internet is written by one of the apps, including this one. So the rules here are strict. Each competitor's row comes from that app's own website, read on 30 August 2026, and the table records what the site claims, not what we think of it. Where a site does not mention a feature, the cell says "not listed on their site" rather than "no". Prices are the ones printed on the site; where none is printed, it says so. We did not install and score every app. Peppy's row comes from the app itself, and its gaps are listed just as plainly at the end.

One distinction drives most of the table. **GLP-1 trackers** (Shotsy, Glapp, Pep, MeAgain) are built for Ozempic, Wegovy, Mounjaro and Zepbound pens, and several add food logging. **Peptide trackers** (Peppy, Dose Track, Peptide Tracker, Regimen, LynkDose) add the things vials require: a reconstitution calculator, a half-life or level chart, inventory and rotation across several compounds. If you take compounded semaglutide or tirzepatide from a vial, you are in the second group even though the medication is a GLP-1.

## The comparison table

| App | Compounds | Reconstitution calculator | Half-life / level chart | Site rotation | Platform | Price model |
| --- | --- | --- | --- | --- | --- | --- |
| **Peppy** | 123 built in: peptides and GLP-1s, plus custom | Yes, inline in the protocol editor and standalone | Yes, "Active in your system" curve from catalog half-lives (Pro) | Yes, 13-site body map, shared across protocols | iPhone only (iOS 18+) | Free (1 active protocol); Pro $29.99/yr or $5.99/wk, 7-day trial |
| [Shotsy](https://peppytracker.com/compare/shotsy/) | GLP-1 only: semaglutide and tirzepatide, injectable and oral | Not listed on their site | Not listed on their site | Yes, "visual map" | iOS, Android | Free core; premium tools, price not listed |
| [Glapp](https://peppytracker.com/compare/glapp/) | GLP-1 only | Not listed on their site | Yes, "rise, peak and fade" estimated levels | Not listed on their site | iOS, Android, web | Free; paid tier not listed |
| [Pep](https://peppytracker.com/compare/pep-glp-1-tracker/) | GLP-1 only, including Rybelsus and compounded | Not listed on their site | Yes, "Medication Level Indicator" | Yes | iOS, Android | Free; optional premium, price not listed |
| [Dose Track](https://peppytracker.com/compare/dose-track/) | Peptides, TRT, GLP-1s; "600+ compounds" | Yes | Yes, pharmacokinetic modeling (Pro) | Yes (Pro) | iOS, Android | Free (3 medications); Pro $6.99/mo or $69.99/yr |
| [Peptide Tracker](https://peppytracker.com/compare/peptide-tracker-app/) | Peptides and GLP-1s, plus custom and blends | Yes, U-100 units | Yes, estimated plasma curves | Yes | iPhone, Android, web calculator | "100% free, no subscription" |
| [Regimen](https://peppytracker.com/compare/regimen/) | Peptides, GLP-1, TRT, HRT; "200+ compounds" | Yes, plus TRT oil and intranasal | Yes, PK modeling | Yes | iOS, Android | Free for first compound; Premium $4.99/mo or $39.99/yr |
| [LynkDose](https://peppytracker.com/compare/lynkdose/) | Peptides | Yes, mL and units | Not listed on their site | Yes, full-body heatmap | iPhone only | Free download, 7-day trial; subscription price not listed |
| [MeAgain](https://peppytracker.com/compare/meagain/) | GLP-1 only | Not listed on their site | Yes, "Perfect Dose Day" levels | Yes | iOS, Android | Free version; MeAgain Premium, price not listed |

## The GLP-1-only apps

**Shotsy** is the most established GLP-1 tracker: shot log, weekly reminders, site map, side-effect log, weight charts, food logging and a shareable report, on iOS and Android. If you take a pen and want nutrition in the same app, it is a sensible pick. It has no vial math and no peptides. **Glapp** leans on its level curve and "injection phases", a peer comparison against trial results and an AI question box; site rotation is not mentioned. **Pep** is close to Shotsy in scope, with a level indicator, site rotation, Apple Health sync and a widget, and adds AI food photo recognition. **MeAgain** is the food-heaviest of the four, with an AI companion and a nutrition plan on top of dose and side-effect logging. All four list Android.

## The peptide trackers

**Dose Track** is the broadest: peptides, TRT and GLP-1s, PK modeling, a calculator, site mapping, bloodwork OCR and an AI coach, with an on-device, iCloud-synced privacy model similar to Peppy's. It is also the most expensive on the list. **Regimen** covers a similar range with Apple Health and Health Connect correlations and lets you use every feature free for one compound. **Peptide Tracker** (peptidetracker.ai) lists a calculator, level curves, rotation, inventory, photos and a community forum, and says it is entirely free. **LynkDose** is iPhone-only like Peppy, with reconstitution math, a heatmap, inventory with expiry tracking and Apple Health metrics such as HRV and sleep; a level chart is not mentioned on its site.

## Where Peppy fits

Peppy's case is the catalog and the privacy model. The 123 built-in compounds each carry their form, default unit, typical frequency, a dose ladder where a label has one, and a half-life for the 62 that have a documented one, so setting up [BPC-157](https://peppytracker.com/compounds/bpc-157/) or [Compounded Tirzepatide](https://peppytracker.com/compounds/tirzepatide-compounded/) is a search rather than a form, and the "Active in your system" curve works without you entering any pharmacology. The [calculator](https://peppytracker.com/guides/peptide-reconstitution-units-to-draw/) lives inside the protocol editor, warns when a draw will not fit the syringe, and is free. The 13-site body map rotates across all protocols, not per compound (see [site rotation](https://peppytracker.com/guides/injection-site-rotation/)). Missed and upcoming doses are computed, so the calendar never duplicates. There is no account and no server; data lives on your iPhone and syncs through your own iCloud (see [privacy](https://peppytracker.com/guides/private-peptide-tracker/)).

What Peppy does not do, stated plainly: **no Android**, and no plan for one. **No food, calorie or macro logging.** **No AI coach**, no community, no bloodwork or labs, no iPad layout. Inventory, reminders, widgets, charts, cycles, step-ups, photos, export and a second active protocol are Pro, at $29.99 a year or $5.99 a week with a 7-day trial. If you want one app for shots and meals, pick from the first group. If you want the dose side done properly and privately, Peppy is built for that.

## How to do this in Peppy

1. Install Peppy from the App Store. There is no sign-up; onboarding asks what you are taking and whether you want a reminder on shot day.
2. In the **Protocols** tab tap **+**, tap **Choose** under Compound, and search the catalog. Form, units and typical frequency fill in.
3. For a vial, use the inline **Calculator**: vial mg, water mL, dose. Peppy shows "Draw up N units". Always verify with your prescriber.
4. Set the schedule, pick a color, and save. The **Today** tab shows the countdown and the "Active in your system" curve.
5. On shot day, tap the dose on Today, tap the suggested site on the body map, and log. Do the daily check-in for weight and side effects.
6. After a week, open **Calendar** and **Progress** and decide whether the free tier covers you or whether reminders, charts and a second protocol are worth Pro.

## Frequently asked

### What is the best peptide tracker app for iPhone?

For research peptides plus GLP-1s, Peppy, Regimen, Dose Track, Peptide Tracker and LynkDose all list a reconstitution calculator and site rotation. Peppy's difference is the catalog (123 compounds with form, units, frequency, dose ladder and half-life) and the no-account, on-device model. Try the free tier of two and keep the one you actually open.

### What is the best GLP-1 tracker app?

If you only take Ozempic, Wegovy, Mounjaro or Zepbound and want food logging too, Shotsy, Pep and MeAgain are built for that. If you take compounded semaglutide or tirzepatide from a vial and need units math, or you also run peptides, a peptide tracker like Peppy covers both.

### Is there a free peptide tracker app?

Every app here has a free tier. Peptide Tracker (peptidetracker.ai) says it is fully free. Peppy's free tier includes one active protocol, the calculator, body-map logging, the calendar, check-ins and iCloud sync; reminders, charts, unlimited protocols and export are Pro.

### Is there a peptide tracker app for Android?

Peppy is iPhone only. Shotsy, Glapp, Pep, Dose Track, Peptide Tracker, Regimen and MeAgain list Android apps on their sites. LynkDose lists iPhone only.

### Does Peppy have an AI coach?

No. Peppy has no AI coach, no community, no food logging and no bloodwork. It tracks doses, sites, schedules, inventory, weight and side effects, and does the units and half-life math. Dose Track, Regimen, Glapp and MeAgain list AI or coaching features.

---

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