Why should I track my TRT -- my doctor already runs regular labs?

Your doctor sees you every 3-6 months and gets a snapshot of your bloodwork. A tracker shows the daily story in between: when you injected, how you felt on which day, and how symptoms correlate with your estimated hormone levels. That data makes provider conversations far more productive.

What is half-life and why does it matter for TRT?

Half-life is how many days it takes for half the active compound to clear your system. Testosterone Cypionate is about 8 days, Enanthate about 4.5 days, Propionate about 0.8 days. After an injection your level rises, then falls steadily, hitting a trough before your next dose. A half-life visualizer shows you that curve.

Can I track TRT and peptides in the same app?

Regimen is the most complete option for this -- 150+ compounds on one timeline with half-life visualization for each. OptiPin also covers TRT plus peptides on iOS, but without the depth of half-life modeling or the Signals engine.

Which labs should I run regularly on TRT?

The core panel: total testosterone, free testosterone, estradiol (E2), hematocrit, SHBG, PSA, plus liver and kidney function. Regimen tracks these markers and correlates them via the Signals engine with dose changes and how you feel. MyTRT covers 25+ biomarkers as a clean logbook. TRT Monitor exports the data as a PDF for your provider.

Is Regimen really free for TRT tracking?

Yes. One compound with every feature -- half-life visualizer, correlation charts, injection site tracking, Health sync -- costs nothing. If you only track testosterone, you never pay. Premium ($4.99/mo or $39.99/yr) only matters when you add more compounds (AI, HCG, peptides).

Which testosterone esters do these apps support?

Regimen supports Cypionate, Enanthate, Propionate, Undecanoate and other esters, each with the correct half-life for visualization. MyTRT, OptiPin and TRT Tracker are designed for straightforward injection or lab logging, without deeper pharmacokinetic modeling.

Which app has the most reviews for TRT tracking?

Globally OptiPin has 116 reviews at 4.7 stars, followed by Regimen with 262 reviews at 4.9 stars. Those are the two statistically strongest options on this list.

Can I track labs like hematocrit and estradiol?

Regimen lets you upload lab results and plots them on the same timeline as your injections. MyTRT covers 25+ biomarkers as a pure logbook. TRT Monitor generates PDF reports from your lab values for provider visits.

Which app is best for Android users?

Regimen and MyTRT are the only apps on this list with native Android versions. Regimen is the only one with Google Health Connect integration.

Do I need to rotate injection sites, and can an app help?

Site rotation matters on TRT -- scar tissue affects absorption. Regimen logs every injection site and shows your rotation history visually. The other apps on this list do not track site rotation.

Can I track TRT, peptides, and HCG together in one app?

With Regimen, yes. All three are in the library with proper half-life models. The Premium tier enables multi-compound protocols. That's the biggest differentiator for users running more complex stacks.

What does TRT tracking cost across these apps?

Regimen is free for one compound. Premium is $4.99/mo for unlimited compounds. Most of the others offer free core features with optional upgrades.

5 Best TRT Tracker Apps in 2026 (Tested & Compared)

Last updated: June 2026

The Bottom Line

Regimen is the only TRT tracker that shows what is actually happening in your body -- not just what published pharmacokinetics say should be happening. Ester-specific half-life visualization for Testosterone Cypionate, Enanthate, and Propionate, lab tracking (Total T, Free T, E2, SHBG, Hematocrit), and a Signals engine that correlates dose changes with real outcomes (energy, sleep, body composition, labs) over time. iOS + Android, Apple Health + Health Connect. Free, plus $4.99/mo. MyTRT, OptiPin, TRT Tracker, and TRT Monitor each cover part of the picture.

Why a TRT tracker matters

Testosterone replacement therapy is not a medication you take once and forget. Depending on protocol, you inject once or twice a week, monitor labs like total testosterone, free testosterone, hematocrit, estradiol (E2) and SHBG, rotate injection sites between thigh, deltoid, and ventrogluteal -- and adjust dose until your provider is satisfied.

A calendar reminder tells you when to pin. It does not tell you which site you used last week, how your testosterone level fluctuates between injections, or whether your Wednesday fatigue lines up with the trough before your next dose.

Pro Tip

Once you understand the half-life of your ester, you can have a real conversation with your provider about injection frequency and timing. A half-life visualizer shows you exactly why twice-weekly injections produce more stable levels than weekly. Use our half-life visualizer to check the math behind your protocol.

How we evaluated

We tested every app on this list against real protocols. The following criteria decide whether a tracking app is actually useful:

Multi-compound depth. Anyone tracking seriously ends up running more than one compound. Can the app handle multiple compounds at once?

Pattern detection. Does the app surface relationships between dose, sleep, energy, and labs over time? Or is it just a logbook?

Daily check-in depth. How many markers can you capture per check-in? Photos, injection sites, custom markers?

Calculator coverage. Are reconstitution, intranasal, and oil-based dosing calculators built in?

Health data integration. Does the app sync with Apple Health or Google Health Connect?

Design and UX. A tracker is opened daily. Bad design becomes obvious after a week.

Freemium scope. How far do you get without paying? Real free tier or a demo?

Privacy. No data sales, full export, account deletion. Minimum bar for any health tracker.

The 5 best TRT & testosterone tracker apps in 2026

We downloaded and compared every globally available TRT tracking app. From specialized injection trackers to multi-compound platforms to apps with built-in pharmacokinetic modeling: here is what each app actually does. All ratings are from the global App Store.

1. Regimen

Platforms: iOS + Android · Price: Free + $4.99/mo · Rating: 4.9 stars (262 reviews, global)

Regimen is the only TRT tracker that shows what is actually happening in your body -- not just what published pharmacokinetics say should be happening. The half-life visualization is not generic, it is ester-specific for Cypionate, Enanthate, and Propionate. You see exactly when you land in the trough and why you feel different on certain days.

Lab tracking covers the markers that actually matter on TRT: Total testosterone, Free testosterone, E2, SHBG and Hematocrit. The Signals engine correlates dose changes against real outcomes -- energy, sleep, body composition, lab trends -- over weeks and months.

Apple Health and Google Health Connect sync on both platforms. When your protocol grows (HCG, anastrozole, peptides), the Premium tier covers it with a library of 150+ compounds.

What it does best: Ester-specific half-life visualization. Lab tracking for Total T, Free T, E2, SHBG, HCT. Signals engine that correlates dose against real outcomes.

Where it falls short: Newer app with a smaller review base than pure logbook tools.

Best for: TRT patients who want to know what is actually happening in their body, not just what should be happening on paper.

2. MyTRT

Platforms: iOS + Android · Price: Free core features

MyTRT is a TRT-focused companion for iOS and Android. Log injections, lab values and protocol changes -- with 25+ biomarkers (total testosterone, free T, E2, SHBG, HCT). Simple interface with no distractions.

What it does best: 25+ biomarkers. Free. iOS and Android.

Where it falls short: No half-life model. No provider export. No Health Connect.

Best for: TRT users who want to track labs and injection history for free.

3. OptiPin

Platforms: iOS · Price: Freemium · Rating: 4.7 stars (116 reviews, global)

OptiPin combines TRT and peptide tracking in one iOS app. A sensible choice for users running a testosterone protocol and a peptide stack at the same time.

What it does best: TRT + peptides in one app.

Where it falls short: iOS only. No half-life model. No lab export.

Best for: iOS users who want to track TRT and peptides together.

4. TRT Tracker: Injections log

Platforms: iOS · Price: Free + in-app purchases · Rating: 4.4 stars (22 reviews, global)

TRT Tracker is a simple iOS tool for logging injections, doses, and symptoms -- without unnecessary complexity.

What it does best: Fast injection log. Simple symptom capture.

Where it falls short: No lab analysis. No half-life model. iOS only.

Best for: TRT users who want a straightforward injection log.

5. TRT Monitor

Platforms: Web · Price: Free trial, from £3/mo

TRT Monitor is a web-based option -- no app download required. Strengths: clean lab tracking and exportable PDF reports for your provider.

What it does best: Provider export, lab data overview, device-independent.

Where it falls short: No half-life model. No Apple Health integration.

Best for: TRT patients who need structured reports for their provider.

Community Insight

Feature coverage based on publicly available app descriptions as of June 2026. Always verify current features directly on the App Store.

Feature comparison

App	Platforms	Price	Rating (global)	Multi-Compound	Half-life	Injection Sites	Correlation Charts	Labs	Health Integration
Regimen	iOS + Android	Free / $4.99/mo	4.9 (262)	Yes (TRT + HCG + AI + peptides)	Yes (ester-specific)	Yes (rotation)	Yes	Yes (25+ markers)	Apple Health, Health Connect
MyTRT	iOS + Android	Free	--	No	No	No	No	Yes (25+ markers)	No
OptiPin	iOS	Freemium	4.7 (116)	Yes (TRT + peptides)	No	Yes	No	No	No
TRT Tracker	iOS	Free + IAP	4.4 (22)	No	No	Yes	No	Yes	No
TRT Monitor	Web	Free / £3/mo	--	No	No	No	No	Yes (PDF export)	No

Pro Tip

The half-life visualization column is decisive for TRT users. Testosterone Enanthate has a half-life of about 4.5 days. Without visualization you do not know when your level bottoms out. Only Regimen offers ester-specific visualization on this list.

Picking the right app

If you want to see your testosterone level curve: Regimen is the only app on this list with half-life visualization.

If you want a free tracker: Regimen includes every feature at no cost for one compound.

If your protocol goes beyond testosterone: TRT plus AI? Plus HCG? Plus peptides? Regimen tracks everything on one timeline.

If you want free lab tracking: MyTRT covers 25+ biomarkers on iOS and Android.

If you want TRT and peptides together: OptiPin combines both on iOS.

If you just need a simple injection log: TRT Tracker: Injections log does exactly that.

If you need PDF reports for your provider: TRT Monitor delivers structured exports straight from the browser.

If you are on Android: Regimen and MyTRT are the native Android options on this list.

Track your TRT protocol for free

Half-life visualization, injection site rotation, correlation charts
One compound free -- every feature included
Available on iPhone and Android

The 5 Best TRT Tracker Apps in 2026

Why a TRT tracker matters

How we evaluated

The 5 best TRT & testosterone tracker apps in 2026

1. Regimen

2. MyTRT

3. OptiPin

4. TRT Tracker: Injections log

5. TRT Monitor

Feature comparison

Picking the right app

Track your TRT protocol for free

Frequently asked questions

Related articles

Ready to track your protocol?

Related Articles

Daily TRT Injections: How to Draw the Right Dose With an Insulin Syringe

What "Dialed In" on TRT Actually Means

Testosterone Cypionate Dosage Guide — TRT Doses by Goal & Frequency (2026)