The 5 Best TRT Tracker Apps in 2026

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. A good TRT monitoring app doubles as a planner: it knows your next injection, your last lab draw, and what changed in between.

Half-life is how many days it takes for half the active compound to clear your system. Testosterone cypionate and enanthate both sit at about 6.9 days based on measured pharmacokinetic data (older references sometimes quote 8 days for cypionate and 4.5 days for enanthate, but the two esters behave near-identically in practice). Propionate is 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.

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; the built-in pattern detection that connects your dose changes to your labs and daily markers is Regimen's contrast.

The core panel: total testosterone, free testosterone, estradiol (E2), hematocrit, SHBG, PSA, plus liver and kidney function. Regimen tracks these markers and lines them up against your dose changes and how you feel. MyTRT covers 40+ biomarkers as a clean logbook. TRT Monitor exports the data as a PDF for your provider.

Yes. One compound -- half-life visualizer, correlation charts, injection site tracking, Health sync -- costs nothing. If you only track testosterone, you never pay. Premium only matters when you add more compounds (AI, HCG, peptides).

Regimen supports Cypionate, Enanthate, Propionate, Undecanoate and other esters, each with the correct half-life for visualization. MyTRT and OptiPin also model testosterone levels against your protocol; TRT Tracker: Injections log stays a lightweight injection log.

Verify current counts at each app's live App Store listing (they change weekly). Regimen sits at 4.8 stars with 700+ ratings across the App Store and Google Play (verified September 2026); OptiPin was at 4.7 stars at the July 2026 check.

Regimen lets you upload lab results and plots them on the same timeline as your injections. MyTRT covers 40+ biomarkers as a pure logbook. TRT Monitor generates PDF reports from your lab values for provider visits.

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

Site rotation matters on TRT -- scar tissue affects absorption. Regimen logs every injection site and shows your rotation history visually. OptiPin also ships a 100+ site map. TRT Tracker: Injections log has a visual site map too. MyTRT and TRT Monitor do not track site rotation.

With Regimen, yes. All three are in the library with proper half-life models, and its pattern detection ties a symptom to the right compound when you are running more than one. Premium is what covers tracking them all at once.

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

You don't need one, but you'll wish you had one. The first time your doctor asks "what dose were you on when we drew labs six weeks ago?" and you can't remember, you'll understand why logging matters. A note in your phone works in theory. A dedicated app with reminders, injection site tracking, and dose history works in practice.

For basic reminders, sure. Apps like Medisafe or Apple Reminders can tell you when to pin. But they can't track injection sites, calculate split doses, correlate symptoms with dose changes, or show your protocol history over months. If all you need is "remind me Tuesday and Friday," a generic app works. If you want actual protocol management, you need something TRT-specific.

Regimen and TRT Tracker both offer visual injection site tracking with rotation suggestions, and OptiPin ships a 100+ site map. The differences come down to how many sites each app supports and whether rotation suggestions are automated. For most people, any of these will keep you from overusing the same spot. Check out our injection tracker guide for more on why rotation matters.

They're useful for understanding why you feel different on different days of your injection cycle. If you inject testosterone cypionate weekly and feel great on days 1-3 but lousy on days 5-7, PK curves show you why: your levels are dropping below the therapeutic range before your next dose. That visual is what convinced a lot of guys to switch from weekly to E3.5D (every 3.5 days). Regimen, MyTRT, and OptiPin all offer some form of PK modeling.

They handle it differently, and the trade-off is real. Local-only apps keep data on the device, which means nothing leaves your phone and also means a lost phone loses your history. Regimen uses encrypted cloud sync, so your protocol survives a new device and syncs between iPhone and Android. Web-based apps pass data through their servers. Whichever you pick, open the App Store privacy label and read it yourself rather than taking anyone's word for it, ours included.

No. And any app that implies it can is a red flag. These are tracking and calculation tools, not medical devices. They help you organize your data so your conversations with your provider are more productive. They don't diagnose, prescribe, or adjust your protocol. Your doctor does that. Read our hematocrit management guide for an example of something you should always discuss with your provider.

Start with Regimen. One compound is free, so if your provider later adds HCG or anastrozole you are not switching apps a month in. If you only ever want a bare injection log and nothing else, a simpler free app will do the job. Either way, start logging before your first injection. Having data from day one is more valuable than trying to reconstruct your history later.

We tested every TRT-specific tracker we could find in the iOS App Store, Google Play Store, and web. General medication trackers (Medisafe, MyTherapy), fertility trackers with TRT features, and apps that haven't been updated in 2+ years were excluded. If we missed something, let us know at support@helloregimen.com.

Most tracker apps treat TRT and peptides as separate worlds. Regimen is built to track both in the same interface, with shared timelines, correlations, and calculators for both categories. If you're running BPC-157 for an injury or GHK-Cu for recovery alongside your TRT protocol, having everything in one place makes it much easier to spot how compounds interact. Our guide on how to track your TRT protocol covers the setup.

Yes, all of them. These trackers log what you take and when, regardless of who prescribed it. Whether you get TRT through a local endocrinologist, a telehealth clinic, or a men's health clinic, the tracking works the same. TRT Monitor's shareable reports are particularly useful for telehealth appointments where you can't hand your doctor a printout. The half-life visualizer is also helpful for explaining to your provider why you want to adjust your injection frequency.