Best peptide tracker apps in 2026

A dozen apps now promise to track your peptides — but most are either a deep app with no content behind it, or a content site with a thin app bolted on. Here's an honest look at what a good tracker actually needs, how the real players stack up, and where our own app, Peptide Me, does and doesn't fit yet.

If you've searched "best peptide tracker app," you've probably noticed that most of the results are written by the apps themselves. Regimen ranks itself #1 on its own blog. OptiPin runs comparison pages against Regimen and PepTracker on its own site. That's not necessarily dishonest — but it means you're rarely getting a comparison written by someone without a dog in the fight.

We don't have that distance either. Peptide Me is the app behind this site, so treat this like a review from a competitor — read it, but check the App Store listings yourself before you decide. What we can offer instead is a genuinely detailed breakdown of what a tracker needs to do well, pulled from actually reading through the App Store listings, screenshots, and public feature pages of the apps below, plus current ratings pulled in July 2026.

What to actually look for in a peptide tracker

Most peptide-tracking apps look similar in a screenshot — a log, a calendar, some charts. The differences that actually matter show up once you've been using one for a few weeks and your protocol gets more complicated than "one peptide, once a day."

1. <strong>Reconstitution calculator.</strong> Vial mg → BAC water volume → target dose → syringe units. This is the single highest-stakes calculation in the whole workflow (a misplaced decimal is a real overdose risk), so it needs to handle mg, mcg, and mL cleanly and show its work, not just spit out a number. Our own version lives at <a href="/calculator/">the Peptide Me dose calculator</a> if you want to see the math it's doing.
2. <strong>Reminders that match real protocols.</strong> Daily reminders are easy. The harder cases are every-other-day, weekly-with-a-loading-phase, or a multi-peptide stack where each compound is on its own schedule. A lot of apps handle daily fine and get clunky the moment your protocol isn't.
3. <strong>Body-map injection-site rotation.</strong> A visual map of injection sites that tracks which ones you've used recently and nudges you toward the ones that have had time to rest. This is one of the more genuinely useful features in the category — the apps that do it well (11–14 mapped points, color-coded by "rest" status) noticeably reduce lumps and scar tissue over months of use.
4. <strong>Bloodwork and labs tracking.</strong> A place to log lab values over time, ideally with OCR so you can photograph a PDF panel instead of typing in twelve numbers by hand, and ideally with reminders for when your next panel is due.
5. <strong>A PK or half-life forecast.</strong> Most trackers log what already happened. Fewer show you a forward-looking curve of what's likely still active in your system, which matters for deciding whether you're actually at steady state or still climbing. See our <a href="/tools/half-life-calculator/">half-life and accumulation calculator</a> for the standalone version of this.
6. <strong>Offline-first and clear data ownership.</strong> This is injection and health data. Whether it's stored locally, in your own iCloud, or on a server somewhere — and whether the company can see it — should be stated plainly, not buried in a generic privacy policy.
7. <strong>Doctor-ready export.</strong> A clean PDF of your dose history, sites, and labs that you can actually hand to a physician is one of the more underrated features in the category, and also one of the better arguments that these apps are being used responsibly rather than to dodge medical oversight.

The apps we compared, and how

We looked at seven apps: the two with the largest review counts in the category (PepTracker, PeptideKit), the two most feature-complete general trackers (Regimen, OptiPin), two apps built specifically around half-life and PK math (Dosed, Dose Track), and our own app, Peptide Me. We pulled ratings, review counts, and pricing directly from each app's current App Store listing rather than from press pages, since those numbers move.¹²³⁴⁵⁶ Star ratings and review counts shift week to week — treat the table below as a July 2026 snapshot, not a permanent scoreboard, and check the listing yourself before deciding.

Regimen: the broadest single app, and the current benchmark

Regimen is the app the rest of the category gets measured against, and it's currently the highest-rated at 4.9★.¹ It covers 150-plus compounds, a reconstitution and PK/half-life calculator, dose logging, reminders, a body map, bloodwork tracking, cycle planning, Apple Health sync, inventory, and CSV export — genuinely the most complete single feature set in the category. Its marketing site, helloregimen.com, is also a real SEO operation: programmatic landing pages, a working web calculator, and more than fifteen articles including its own "best tracker" roundup (in which it ranks itself first — worth knowing before you read it as neutral). The honest downside isn't a missing feature so much as depth of trust signals: like most of this category, there's no named clinician behind the content, and the subscription (roughly $4.99/month or $39.99/year after a free tier) is on the higher end for the space.

PepTracker and PeptideKit: the biggest user bases, the thinnest websites

PepTracker has more App Store reviews than anything else in this category — 361 and climbing as of July 2026, which is a real signal about day-to-day reliability at scale.² The trade-off is that it's a fairly focused dose log and reminder tool rather than a full protocol platform: reconstitution math is basic, there's no PK forecasting, no body map, and its marketing site is close to a bare landing page with an empty blog. Recent user reviews (visible on its own App Store listing) ask for exactly the features that separate it from Regimen or OptiPin — logging in previous months, tracking more than three peptides at once, and injection-site notes.

PeptideKit sits in a similar spot: 4.7★ from roughly 200 reviews, a clean protocol-scheduling experience with an in-app AI assistant for compound questions, but again no PK curve, no real body map, and a brochure-style site with little published content.³ Both apps prove something worth taking seriously: a tight, reliable dose log with good reminders is enough to earn a large, happy user base on its own, even without the deeper features. It just means neither is the right pick if bloodwork tracking or injection-site rotation matters to you.

OptiPin: privacy-first, with its own AI layer

OptiPin leans hardest into privacy of the general trackers — encrypted iCloud storage, 200-plus tracked compounds, a body map, bloodwork logging, and an AI feature ("OptiInsight") layered on top, at 4.7★ from around 130 ratings.⁴ Its marketing site runs its own comparison pages against Regimen, PepTracker, and other apps in the category, so read those the same way you'd read Regimen's "best tracker" post — useful for feature detail, not neutral. Pricing is competitive (free tier, then roughly $4.99/month or $24.99–$39.99/year), and reviewers consistently mention a responsive developer shipping features quickly, which matters more than any single feature checklist in a category that's still moving fast.

Dosed and Dose Track: the half-life specialists

Two smaller apps are worth knowing about specifically for PK math. Dosed (marketed at trackpeptides.com) pairs dose logging and a basic body map with a genuine half-life calculator behind its premium tier, priced at $1.99/week, $4.99/month, $29.99/year, or a $49.99 lifetime option — the lifetime price is unusually generous for the category, though its review count is still too small to draw conclusions from.⁵ Dose Track goes further on paper: a "Dial-In" PK simulator, bloodwork OCR, and an AI layer called "Pulse," sitting at 4.8★ from a small base of reviews.⁶ Both are brochure sites with no real content behind them — worth trying for the calculator specifically, less useful if you're also looking for injection-site rotation or a doctor export.

If you're TRT-only rather than peptide-focused

Everything above is aimed at peptide tracking specifically. If testosterone replacement is your whole use case, a TRT-specific app — Himcules (a one-tap, ~2-second log with a 14-point body map), MyTRT (an 11-point body map plus a testosterone PK curve), or TRT Plus (built around its "Testimator" testosterone-response model) — may fit better than a general peptide tracker. Our TRT hub covers dosing, bloodwork timing, and injection technique in more depth than we can fit into this comparison.

Pricing side by side

Pricing in this category ranges from free-with-ads-style limits to one-time purchases to real subscriptions, and it doesn't correlate cleanly with feature depth — Dosed's $49.99 lifetime buys more than some $4.99/month plans elsewhere.

Where Peptide Me fits — honestly

Here's the disclosure part in full, not buried: we make Peptide Me, and this article lives on the marketing site for it. We're also not going to pretend it has a five-year track record or thousands of reviews, because it doesn't — it's a new, offline-first app currently in early access, not yet the seven-figure-download incumbent that Regimen or PepTracker are. If you want an app with a long review history and a large existing user base today, that's a legitimate reason to pick one of the apps above instead.

What we're building it around is a specific, narrower set of gaps we kept running into across the apps above: a PK forecast that also models testosterone and estradiol trend, not just generic "blood level" curves, for people running peptides and TRT together rather than one or the other; bloodwork tracking with built-in reminders for when your next panel is actually due, not just a place to paste numbers after the fact; a body map with rotation nudges as a baseline feature rather than a premium add-on; and a doctor-ready PDF export designed to be handed over as-is. Everything is offline-first and stored on-device by default — nothing about your dose history leaves your phone unless you choose to export it.

We're also staying out of the vendor business on purpose. Peptide Me doesn't sell peptides, doesn't run a supplier directory, and doesn't take affiliate commissions from anyone you'd buy from — the same neutrality stance we take across the rest of this site, including on the compound database where every entry carries an evidence tier instead of a sales pitch. That's a smaller claim than "best app in the category," and it's the honest one for where we are right now.

How to actually choose

The right pick depends more on what you're tracking than on any single "best" ranking:

1. Tracking one or two peptides with simple reminders and nothing else — PepTracker or PeptideKit will cover you with the least friction, and both have the largest proven user bases if reliability at scale is your priority.
2. Running a multi-compound protocol and want the deepest single feature set today — Regimen is the most complete general tracker on the market right now.
3. Privacy is your top concern and you want encrypted local storage with a full feature set — OptiPin is built specifically around that.
4. You mainly want accurate half-life/PK math and don't need bloodwork or a body map — Dosed or Dose Track are narrower but capable tools for that specific job.
5. TRT is your whole use case, not general peptides — a TRT-specific app (Himcules, MyTRT, or TRT Plus) will likely fit better than a general peptide tracker.
6. You want offline-first storage, a combined PK + testosterone forecast, and a doctor-ready export, and you're comfortable trying something newer with less of a track record — that's the case we're making for Peptide Me, and we'd rather you know that going in than pretend otherwise.

This page isn't medical advice and a tracker app isn't a medical device — it's a comparison of consumer software, based on public App Store listings and each app's own marketing pages as of July 2026. Ratings, pricing, and feature lists change; check the current App Store listing for anything you're about to pay for.

FAQ

References

Primary sources — PubMed / NEJM / The Lancet.

1. Regimen: Peptide Tracker. App Store. Apple. https://apps.apple.com/us/app/regimen-peptide-tracker/id6753905449
2. PepTracker: Dose Log. App Store. Apple. https://apps.apple.com/us/app/peptracker-dose-log/id6747189889
3. Peptide Tracker - PeptideKit. App Store. Apple. https://apps.apple.com/us/app/peptide-tracker-peptidekit/id6751918022
4. Peptide TRT Tracker | OptiPin. App Store. Apple. https://apps.apple.com/us/app/peptide-trt-tracker-optipin/id6745631936
5. Peptide Tracker & Log: Dosed. App Store. Apple. https://apps.apple.com/us/app/peptide-tracker-log-dosed/id6753125648
6. Dose Track - AI Peptide Log. App Store. Apple. https://apps.apple.com/us/app/dose-track-ai-peptide-log/id6755119982
7. Himcules: TRT Injection Log. App Store. Apple. https://apps.apple.com/us/app/himcules-trt-injection-log/id6756963306
8. My TRT App. App Store. Apple. https://apps.apple.com/us/app/my-trt-app/id6745529127
9. TRT Plus. App Store. Apple. https://apps.apple.com/us/app/trt-plus/id6448075516
10. Regimen. Best Peptide Tracker Apps 2026: 5 Apps Compared. helloregimen.com. 2026. https://helloregimen.com/blog/best-peptide-tracker-apps-2026