Pepti vs LynkDose: which private 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 LynkDose facts below come from its own website and App Store listing as read in October 2026, each dated and listed in the Sources; products change, so verify current details on LynkDose’s own pages. Where its pages do not state something, the table says so rather than guessing.

The comparison

Sources (2)

1. LynkDose — homepage: local-first description, feature list, free tools and guides, 7-day free trial statement. lynkdose.com (Oct 2026)
2. Peptide Tracker: LynkDose — App Store listing: seller, in-app purchase list, iOS 26.0 / macOS 26 / visionOS 26 requirements. App Store id6747953794 (Oct 2026)

Where LynkDose is stronger

LynkDose’s strength is the biometric layer. It correlates your log with Apple Health data over 30 days, weight, HRV and sleep, keeps a wellness journal for mood, energy, focus and recovery, and adds AI insights and a chat assistant it describes as grounded in your own data (Oct 2026). It also runs on Mac and Apple Vision as well as iPhone, and it is cheaper to try: free to download, with in-app purchases from $2.99 a week to $39.99 a year and a trial its site puts at seven days (Oct 2026). Its website publishes free tools and guides, including a reconstitution calculator, a peptide library and comparison pages.

Said plainly: if you want your injection log read against your sleep and HRV, with an assistant that comments on the trend, LynkDose has built that and Pepti’s coach is a narrower thing. If you want to try before paying, LynkDose offers a trial and Pepti does not.

Where Pepti is stronger

Pepti’s advantage is the line it does not cross. It publishes no dosing content at all: no library of what to take, no stacks, no cycle lengths. You enter the figure you already have and it records it against the vial it came from, and shows where you last injected across twelve sites. Its compound reference pages cite PubMed and label sources with counts you can check, and they say plainly when no human half-life has been published rather than printing one. It also runs on iOS 17.2 or later, so it works on iPhones that cannot run iOS 26.

On data handling the two sound alike, and the difference is in what is stated. Pepti has no account, no sign-up and no cloud sync, and says exactly what its two opt-in features send and where: coach messages with the app context they need, or an imported report, to Pepti’s server for processing by Anthropic. LynkDose describes itself as private and local-first; where its AI features are processed is not stated on the pages reviewed (Oct 2026). Try the free reconstitution calculator on this site (a web tool, not part of the app) or read the private peptide tracker page to see what Pepti states item by item.

Where they are close

On the core mechanics these two are close. Both track injection sites, both keep vial records with expiry reminders, both keep protocol data on the device by design, and both have an AI layer; LynkDose also does reconstitution math in the app, which Pepti removed in October 2026. If those were your only criteria, either would do.

The forks are elsewhere: LynkDose requires iOS 26, Pepti runs from iOS 17.2; LynkDose pairs its tracker with dosing guides and stacks, Pepti refuses to; LynkDose reads Apple Health across 30 days, Pepti keeps weight and imported bloodwork on the same timeline as the log. Read the table with those three forks in mind.

How to tell which one you need

Check your iPhone first: if it cannot run iOS 26, the choice is made. Then ask whether you want dosing content from the maker of your tracker. If a library of compounds, stacks and cycle lengths next to the log is a feature to you, LynkDose supplies it; if you specifically want a tool that never does, Pepti is built on that refusal. Last, ask what you want read against the log: LynkDose’s answer is 30 days of Apple Health; Pepti’s is weight, bloodwork you import and an optional coach that explains published research with citations.

Who should pick which

There is no single winner here, only a fit. In short:

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

Is LynkDose free?

LynkDose is free to download; its App Store listing shows in-app purchases from $2.99 weekly to $39.99 yearly, with monthly and quarterly options, and its site states a 7-day free trial (Oct 2026). Pepti is $12.99 a month or $49.99 a year in USD, with no free trial and one tier.

What iOS version does LynkDose need?

Its App Store listing requires iOS 26.0 or later on iPhone, with Mac (M1 or later, macOS 26) and Apple Vision (visionOS 26) also listed (Oct 2026). Pepti needs iOS 17.2 or later, so it runs on older iPhones.

Does LynkDose keep data on the device?

Its site describes it as private and local-first, with share cards generated on-device (Oct 2026); whether an account is required and where its AI features are processed are not stated on the pages reviewed. Pepti keeps your protocol and health data on the device with no account and no cloud sync, apart from the opt-in AI coach and lab-report import, both behind one consent switch.

Does either app tell you what dose to take?

Pepti does not, anywhere, by design: you enter the figure you already have and it logs it. LynkDose's website publishes a peptide library, named stacks and guides titled with dosage and cycle length, while stating that it does not provide medical advice (Oct 2026). Neither app's content is medical advice.

Can I use LynkDose or Pepti on Android?

No. Both are Apple-only: LynkDose lists iPhone, Mac and Apple Vision, and Pepti is iPhone only (Oct 2026). The comparison hub on this site lists which of the ten trackers reviewed run on Android.

Both apps are actively maintained and both do their own job well. If this page has done its work, it has replaced “which tracker has more features” with three questions that decide it — which iOS you run, whether you want dosing content from your tracker’s maker, and what you want read against the log — and pointed each answer at the app built for it.

Not medical advice. Pepti is a record-keeping tool, not a medical device.

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