Pepti vs Milligram: which peptide tracker fits you?

By Tessaro Pty Ltd, the maker of Pepti · Reviewed October 2026

This comparison is written by the maker of Pepti, one of the two apps. The Milligram facts below are taken from its own website and App Store listing as read in October 2026, and each is dated and linked in the Sources section so you can check it yourself. Where its own pages leave something unstated — its account and data-storage model, in particular — we have marked it "not stated" rather than guess.

The comparison

Sources (3)

1. Milligram — official website (features, encryption claim, company Milligram Health Pty Ltd). milligramapp.com
2. Milligram — company site hosting its terms and privacy pages. milligram.health
3. Milligram — App Store listing (price range, compound library with dose ranges, reconstitution, bloodwork, AI, platforms, developer). App Store id6759593151

Where Milligram is stronger

Milligram does far more than record. It ships a compound library that includes dose ranges, mechanisms and half-lives; it reads a photo or PDF of your bloodwork and flags out-of-range values; it charts compound levels against published half-lives; it runs an AI assistant over your own stack, doses, bloodwork and Apple Health data; and it offers two-way Apple Health sync and apps across iPhone, Mac, Apple Watch and Apple Vision (Oct 2026). For someone who wants dosing references, lab analysis and a presence on every Apple device, Milligram covers ground Pepti deliberately does not.

Said plainly: if you want an app that provides dosing information and reads your labs, Milligram is the better fit and Pepti is the wrong tool for you.

Where Pepti is stronger

Pepti's advantage is restraint and clarity about data. It publishes no dosing content at all: it records the figure you already have and never suggests what the figure should be. It is explicit that there is no account and no cloud sync — where Milligram's account and storage model is not stated on its own pages, Pepti's is on the table. Its compound reference pages cite their sources. For someone who wants a tool that never doses and is clear about where data lives, that is the point.

Where they are close

The overlap is narrower than with some trackers, but it exists. Both are built around logging injections and both read bloodwork; Milligram also does reconstitution math and charts compound levels against published half-lives, both of which Pepti removed from the app in October 2026. If an iOS injection log were all you needed, either would serve. The decisive gaps are dosing content, lab import and Milligram's wider Apple-device reach, against Pepti's no-account stance and cited sourcing.

How to tell which one you need

Ask two questions. First: do you want the app to provide dosing references and read your bloodwork? If yes, Milligram is built for that; if you specifically want a tool that never doses, Pepti is. Second: how clear do you need the data story to be? Pepti states no account and no cloud sync; Milligram does not state its model on its own pages. Those two answers separate the apps more cleanly than any feature count.

Who should pick which

There is no single winner, only a fit:

For the wider field, see how Pepti compares to other trackers, learn what a peptide tracking app does, or read more about the Pepti peptide tracker.

Common questions

Does either app tell you what dose to take?

They differ by design. Milligram's App Store listing describes a compound library that includes dose ranges alongside mechanisms and half-lives (Oct 2026). Pepti publishes no dosing content at all: you enter a figure you already have and it logs it, and it never suggests what that figure should be. If you want an app that provides dosing references, Milligram does; if you want one that refuses to, Pepti does.

What platforms does Milligram run on?

Milligram is Apple-only: iPhone, Mac, Apple Watch and Apple Vision, requiring iOS 17 or later (Oct 2026). No Android or web version is listed. Pepti is iPhone only and requires iOS 17.2 or later, so neither app helps if you are on Android.

Does Milligram require an account or store data in the cloud?

Not stated. Milligram's listing references Sign in with Apple, but no page we read states whether an account is required to use the app, or whether data is held on-device or in the cloud; its App Store privacy label lists data linked to the user (Oct 2026). Pepti is explicit by contrast: no account, no cloud sync, and data on the device unless you turn on the AI coach or lab-report import.

Which app does more beyond tracking?

Milligram. Beyond logging it adds a bloodwork reader that extracts biomarkers from a photo or PDF, charts of compound levels against published half-lives, an AI assistant over your own data, and two-way Apple Health sync (Oct 2026). Pepti is narrower on purpose: a dated injection and vial record, 12-site rotation and cited reference pages, with nothing that suggests a dose.

How much does each app cost?

Pepti is one flat tier: $12.99 per month or $49.99 per year in USD, with no free trial and no free tier. Milligram is free to download, with in-app purchases listed from $17.49 to $69.99 on its App Store listing (Oct 2026). Check its listing for the current figures.

Not medical advice. Pepti is a record-keeping tool, not a medical device. Milligram details are from its own public pages, October 2026; products change, so verify current details on Milligram's own pages.

Pepti – Peptide Tracker · Reviewed October 2026 · Editorial policy · About