Best Peptide Tracker Apps in 2026: Protocol Trackers Compared Honestly

*Updated October 5, 2026*

Most "best peptide tracker" lists are written by one of the apps on the list. So is this one — Alethea Health wrote it. The difference: we'll tell you exactly who should use a competitor instead of us, because a tracker you'll abandon in two weeks is useless no matter which logo is on it. We do not invent user counts, star ratings, or "#1" crowns.

The short version: if you want a browser-first protocol tracker with free calculators, look at PepStack. If you want native on-device PK modeling, look at Dose Track or Protocol. If you want a native on-device dose logger with a clear free tier, look at Peptra. If you want the simplest native app for logging one or two injectables, get Regimen. If you want native apps plus an AI vial scanner and education tools, look at PeptIQ. If labs + StackAI are the center of gravity, MyProtocolStack may fit. If you're running a multi-variable protocol and the question keeping you up is "is any of this actually working?", that's the problem Alethea was built for.

What actually matters in a peptide protocol tracker

Four things separate a tracker you'll still use in month three from a dose diary you abandon:

1. Logging friction. If a dose takes more than 10 seconds to log, you'll stop logging.
2. Schedules and adherence — including skips. A protocol has a cadence. Unlogged and skipped doses are data, not shame.
3. Correlation, not just history. A list of doses tells you what you took. It can't tell you what changed. You need doses next to sleep, HRV, weight, and labs.
4. Your whole protocol. Most people running peptides are also running supplements, orals, training, and diet changes. If the app only sees injections, it only explains part of the picture.

For a deeper definition of the category, see What is a peptide protocol tracker?.

The comparison

Not in the tracker table: PepPal is an AI peptide Q&A chatbot with calculators — useful for "what is X?" questions, but it does not track doses, schedules, or adherence. We list it below so searchers aren't sold a chatbot as a tracker. Peptide Tracker (peptidetracker.ai) and Pepture also compete for protocol-tracker searches; see the category explainer for hedged notes.

1. Alethea Health — protocol tracker + personal health OS

Alethea logs peptides, GLP-1s, and the rest of your protocol: schedules and adherence, reconstitution math, vial inventory, lab uploads, wearable sync (Apple Health, Fitbit, Withings, Garmin, Oura, WHOOP, and Polar), pharmacokinetics context for compounds in the library, and AI chat that answers from your data — not generic peptide trivia. Free reconstitution calculators (mg, mcg, syringe units) work with no account.

Honest limitations: we are web / PWA only (full web app + installable PWA with offline logging). Native iOS and Android apps are not available. We're newer than some of the apps below and we won't pretend otherwise — no invented user counts here. Clinic tier exists for practices ($1,990/yr for up to 10 patients) but is not HIPAA-covered and we do not sign a BAA. We are not a pharmacy and not affiliated with Alethea Medical.

Pricing (matches live pricing): Free $0; Premium $9.99/mo or $99.99/yr; Pro $29.99/mo or $299.99/yr; Clinic $1,990/yr (up to 10 patients, 3 staff; month-to-month $199/mo); Founding Member Pro $9.99/mo locked (first 50, web only).

Pick Alethea if you're changing more than one variable, you own a wearable or run labs, and you want an analyst — not another chart to interpret yourself.

2. PepStack — browser-first protocol tracker + calculators

PepStack (pepstack.io — not PepStack Pro / pepstackpro.com) is a browser-first peptide protocol tracker and calculator suite. Public positioning: create protocols, log doses, manage inventory, calendar views, CSV import/export, and free reconstitution / dosage / half-life / syringe tools without trapping you in a spreadsheet.

Pricing (pepstack.io/pricing, as of Oct 2026): Free forever includes calculators, peptide directory, protocol creation and dose logging, calendar view, CSV import/export, and basic injection site selection. Pro ~$4.99/mo (yearly option advertised with ~33% savings) adds inventory manager, progress tracker, smart injection site suggestions with body map, AI insights that correlate protocol with progress, cloud sync, advanced analytics and adherence tracking, and protocol export. Their FAQ states the Pro tracker is a mobile-optimized web app and that native iOS/Android apps are planned.

Where it differs from Alethea: PepStack is an excellent browser-first logger + math suite; Alethea leans multi-brand wearable sync + labs + AI over a longitudinal stack on web/PWA. Overlap is real on schedules and inventory — pick based on whether outcomes correlation across devices is the job.

Pick PepStack if you want browser-first tracking and free calculators today. Deeper head-to-head: Alethea vs PepStack.

3. Dose Track — native on-device PK + Pulse AI

Dose Track is a native iOS and Android peptide / TRT / GLP-1 tracker with a pharmacokinetics-first pitch: real-time level visualization, half-life and Tmax modeling, injection site rotation, smart reconstitution, bloodwork OCR, and Pulse — an AI protocol coach grounded in on-device data (Pro).

Pricing (homepage, as of Oct 2026): Free — 3 active medications, dose logging + reminders, weight and basic metrics, and “free move to a new phone.” Pro ~$6.99/mo or ~$69.99/yr — unlimited medications and stacks, PK level visualization, Dial-In simulator, bloodwork OCR and labs, injection site mapping, Pulse AI coach. Their site positions data as private by default — it stays on your phone unless you choose otherwise.

Where it differs from Alethea: Dose Track is native and on-device; Alethea is web/PWA with multi-brand wearable connectors and cloud account sync. Both can answer “is this working?” — the architecture and data sources differ.

Pick Dose Track if you want native apps, on-device privacy, and PK curves as the center of gravity. Deeper head-to-head: Alethea vs Dose Track.

4. Peptra — native on-device dose / protocol logger

Peptra (App Store listing: *Peptra: Peptide Dose Tracker*) is a native on-device dose and protocol logger: cycles with weeks-on/weeks-off or stepped ramps, backdatable dose logs, vial inventory with run-out alerts, concentration converter, medication level insights for compounds with published half-lives, offline reminders, and a site map. Privacy pitch: data stays on device — no account, no servers holding health logs (subscription restore uses an anonymous payment identifier per their listing).

Platforms (App Store listing, as of Oct 2026): iOS 17+ and Mac (Apple silicon). Pricing (App Store IAPs, as of Oct 2026): Free — unlimited dose logging, one active protocol, reminders, concentration converter, two vials, and the site map. Premium unlocks unlimited protocols and vials, blends, and level-curve insights — commonly ~$4.99/mo, ~$29.99/yr, or ~$69.99 lifetime. A separately branded “PepTra” Android listing exists on Google Play from a different developer — it is not the same app.

Where it differs from Alethea: Peptra is on-device native logging; Alethea is web/PWA outcomes correlation across wearables and labs. Pick Peptra if you refuse cloud accounts and want a clear free native logger.

Deeper head-to-head: Alethea vs Peptra.

5. Regimen — the best pure native logger

Regimen is a genuinely well-built native tracker: large compound library, reconstitution calculators, injection-site rotation, PK / half-life visualization, Apple Health and Health Connect sync, inventory / beyond-use-date style vial tracking, and a generous free tier for a single compound. It earns its place at the top of many "best tracker" lists for a reason — including its own.

Where it stops for some people: wearable data is primarily Apple Health / Health Connect passthrough rather than direct brand connectors like Oura or WHOOP. If your main question is conversational AI analysis across doses + labs + wearables in one place, that's a different product shape (Alethea's lane).

Pick Regimen if you track injectables on iOS or Android and want the cleanest native logging experience with strong calculators. It's the best app in that lane. Deeper head-to-head: Alethea vs Regimen.

6. PeptIQ — vial scanner, native apps, education

PeptIQ is a peptide tracker available on iOS, Android, and web, with dose logging, calculators, lab logging, and an AI-assisted vial scanner that helps pre-fill compound details from a label — useful when setup friction kills adherence. It also invests heavily in peptide education, FDA-status style tools, and guides. Freemium model; Apple Health and Health Connect integration.

Where it differs from Alethea: PeptIQ leans education + logging + scanner workflow; Alethea leans protocol adherence + wearable/lab correlation + AI over *your* longitudinal data. Both can be "peptide trackers"; the jobs aren't identical.

Pick PeptIQ if you want native apps today, a vial scanner for setup, and education tools alongside logging.

7. Protocol — on-device native logger with PK curves

Protocol is a native iOS peptide tracker (Android is listed as coming soon; free web tools like a recon calculator, PK modeler, and stack planner exist, but the product is the apps). Architecture pitch, per their site as of Oct 2026: on-device / no account / no cloud for the native apps — a real privacy angle if you refuse cloud sync.

What they emphasize: dose logging; peptides + supplements + habits in one protocol; reconstitution calculator; PK curves; 3D injection site map; AI Research Assistant / Stack Builder (Pro); Apple Health on iOS. Pricing (homepage, as of Oct 2026): free core tracking; Protocol Pro ~$59.99/yr.

Where it stops for some people: it is not a web/PWA primary product, and its AI lane is research / stack-building rather than correlating wearables + labs over a long longitudinal stack the way Alethea frames “is it working?”. If you want cloud sync across devices as the default, this architecture is intentionally the opposite.

Pick Protocol if you refuse web/PWA, want on-device-only storage, and care about PK curves plus injection-site rotation on native iOS. Deeper head-to-head: Alethea vs Protocol.

8. MyProtocolStack — labs-first protocol tracking

MyProtocolStack is a web + iOS + Android option (per their site) with a labs-first angle: lab PDF uploads, 40+ biomarkers, StackAI panel interpretation tied to the protocol you’re running, plus dose logging, vial inventory, and reconstitution calculators.

Pricing (homepage, as of Sep 2026): free Explorer tier; Optimizer ~$14.99/mo or ~$149/yr; 14-day trial, no card to start (per their marketing).

Honest overlap with Alethea’s “is it working?” story: if bloodwork is the center of gravity — upload panels, trend biomarkers, ask StackAI against your stack — MyProtocolStack may fit. If the job is wearables + multi-variable AI chat over a longitudinal stack (schedules, adherence, inventory, labs, and devices together), that’s Alethea’s lane. Both can be serious protocol tools; the center of gravity differs.

Pick MyProtocolStack if labs + StackAI in one place matter more than wearable-first correlation. Deeper head-to-head: Alethea vs MyProtocolStack.

9–11. PepTracker, Smart Peptide Tracker, Shotsy

• PepTracker: simple free dose history on iOS; one of the larger review footprints in the category. Light on calculators and health integration.
• Smart Peptide Tracker: Android-first with a one-time price — the pick if you refuse subscriptions.
• Shotsy: GLP-1 only, iOS only. Fine for semaglutide-only users; a dead end if your protocol grows into other peptides.

Related but not a tracker: PepPal

PepPal is an AI peptide research chatbot with calculators and a knowledge base. It does not track doses, schedules, inventory, or adherence. At chatbot subscription prices, you're paying for Q&A — not a protocol tracker. Fine if you want peptide-specific chat and you're happy tracking elsewhere.

How to pick a lane

The bottom line

Every real tracker above can log a dose. The category split is logger vs protocol tracker that correlates outcomes. If tracking is the goal, PepStack, Dose Track, Peptra, Regimen, PeptIQ, and Protocol are excellent in their lanes; MyProtocolStack is strong when labs lead. If knowing whether the protocol is working — with schedules, adherence, inventory, recon math, labs, and wearables — is the goal, that's Alethea.

*Educational reference only — not medical advice. Alethea reads your data and surfaces patterns; it does not diagnose, prescribe, or replace a clinician. Alethea Health is not a pharmacy and is not affiliated with Alethea Medical.*

Frequently asked questions

What is the best peptide tracker app in 2026?

It depends on the job. For a browser-first protocol tracker + calculators, PepStack is a strong option. For native on-device PK modeling, look at Dose Track or Protocol. For a native on-device dose logger with a clear free tier, Peptra fits that lane. For the cleanest native logger for one or two injectables, Regimen is excellent. For iOS/Android/web dose logging with an AI vial scanner, PeptIQ is a strong option. For labs-first tracking with StackAI, MyProtocolStack fits. For correlating doses with wearables and labs and asking AI questions from your own numbers, that's what Alethea Health is built for. PepPal is an AI chatbot with no tracking — useful for Q&A, not a tracker. The right pick is the one you'll still be using in month three.

Is there a free peptide tracking app?

Yes. Alethea Health has a free tier for dose logging, including injections, and free reconstitution calculators with no account required. PepStack offers free forever calculators plus free protocol creation and dose logging. Dose Track's free tier covers 3 active medications. Peptra's free tier includes unlimited dose logging with one active protocol. Regimen offers a free tier for one compound. Protocol's core tracking is free (on-device). MyProtocolStack has a free Explorer tier. PepTracker has a free dose-history tier. PeptIQ is freemium across iOS, Android, and web. Most apps reserve multi-compound tracking, wearable correlation, or AI analysis for paid plans.

What's the best alternative to Regimen?

Regimen is a strong native multi-compound logger with calculators and Apple Health / Health Connect sync. If you want AI analysis of your own data plus lab uploads and wearable correlation (Apple Health, Fitbit, Withings, Garmin, Oura, WHOOP, and Polar), Alethea Health is aimed at that multi-variable “is this working?” job. PepStack is another alternative if you want browser-first protocol tracking. Dose Track or Protocol fit if on-device PK is the priority. Peptra fits if you want a native on-device logger with a generous free tier. PeptIQ is another alternative if you want a vial scanner and native apps with education tools. MyProtocolStack is worth a look if bloodwork + StackAI is the center of gravity.

What is a peptide protocol tracker vs a dose log?

A dose log records what you took. A protocol tracker also holds schedules, adherence (including skips and unlogged doses), reconstitution context, often vial inventory, and ideally the outcomes side — wearables, labs, symptoms — so you can review the whole cycle. Alethea is built as a protocol tracker / personal health OS, not only a dose diary. See /peptide-protocol-tracker for the full explainer.

Can a peptide tracker tell me if my protocol is working?

Most can't — they show dose history and charts, leaving the analysis to you. To answer 'is it working,' an app needs to hold your doses, your wearable trends (sleep, HRV, weight), and your labs together and interpret them. Alethea Health puts an AI on top of that combined data to surface patterns; it does not diagnose or prescribe. PepStack Pro markets AI insights that correlate protocol with progress. Dose Track's Pulse AI is on-device. MyProtocolStack's StackAI leans labs + protocol; Protocol's AI Research Assistant / Stack Builder (Pro) leans compound research and stack setup — different jobs than longitudinal wearable + lab correlation.

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