The Best TRT Tracking Apps for Android in 2026
An honest comparison of TRT tracking apps available on Android — OptiPin, Vially, SteroidPlotter, spreadsheets, and Doseline. What to look for and why Android users have been underserved.
The Android Problem Nobody Talks About
If you are on TRT and carry an Android phone, you already know the frustration. The best injection tracking apps either do not exist on Android at all, or they treat Android like a checkbox exercise — technically available, practically worse in every way that matters.
Look at the current landscape:
- OptiPin, the app that pioneered pharmacokinetic hormone modeling for TRT, is iOS only. No Android version. No timeline for one.
- Vially, the most feature-complete multi-compound tracker, is iOS only. Their website says “coming soon” for Android. It has said that for a while.
- PatchDay, the privacy-focused open-source tracker that many TRT users borrowed from the HRT community, is iOS only.
- Shotsy, the app with 19,000+ iOS ratings and the medication level chart everyone screenshots on Reddit, technically has an Android version — but it is a different, worse app. Core features are locked behind a paywall that iOS users get for free. Google login is mandatory. Your data does not stay on your device. There is no Health Connect integration. The 4.6 rating on Android versus 4.9 on iOS tells the story in numbers.
This is not a minor inconvenience. Roughly half of smartphone users worldwide are on Android. In the TRT community specifically, the split skews even more toward Android — particularly among users outside the US. These users have been forced into workarounds: spreadsheets, generic reminder apps, web-based plotters, or just memory and hope.
That is a lot of people tracking their protocol on a Google Sheet and setting phone alarms for injection day.
What a TRT Tracking App Actually Needs to Do
Before comparing options, it is worth being specific about what TRT users need from a tracker. This is not the same as what a general medication reminder app provides. TRT protocols are more complex than “take this pill at 8am.”
Multi-Compound Protocol Support
Most TRT users are not just on testosterone. A typical protocol might include testosterone cypionate E3.5D, an aromatase inhibitor like anastrozole twice a week, and HCG a few times a week. Some users run DHEA or pregnenolone alongside. An app that can only track one medication at a time — or that treats each compound as a completely separate entity with no awareness of the overall protocol — misses the point.
Pharmacokinetic Modeling
This is the feature that separates a TRT tracker from a generic medication reminder. When you inject testosterone cypionate, your serum levels do not stay flat until your next injection. They spike, plateau briefly, then decline on a curve determined by the ester’s half-life. Understanding where you are on that curve — whether you are near peak, in the steady zone, or approaching trough — is genuinely useful information.
It helps you correlate how you feel with where your levels actually are. It helps you decide whether E3.5D or E7D dosing gives you more stable levels. It helps you have informed conversations with your provider instead of guessing.
Bloodwork Tracking With Context
Here is something that catches new TRT users off guard: the reference ranges on your lab results are built for the general male population, not for people on exogenous testosterone. A total testosterone of 900 ng/dL might get flagged as “high” on a standard lab report, but it is a perfectly reasonable target range for TRT.
A good tracker should let you log bloodwork and show you both the standard lab ranges and the typical TRT target ranges side by side. Total T, free T, estradiol (sensitive), hematocrit, PSA, lipids — these are the numbers that matter, and they need context to be useful.
Injection Site Rotation
Scar tissue builds up when you inject in the same spot repeatedly. A visual body map that tracks where you have injected and suggests the next site based on rotation history is not a luxury feature — it is basic hygiene for anyone on long-term injectable therapy. Thighs, delts, glutes, ventrogluteal — you need to rotate, and you need to remember where you went last.
Privacy
TRT is a personal medical decision. For some users, it is also legally sensitive depending on their jurisdiction. Health data — injection logs, bloodwork results, hormone levels — should not be sitting on someone else’s server by default. Local-first storage is the minimum. Cloud sync should be opt-in, encrypted, and under your control.
Offline-First Architecture
You should be able to log a dose without an internet connection. Full stop. If your tracker requires a server round-trip to record that you just injected, it has failed at its most basic job.
The Honest Comparison
Here is where every option currently stands for Android TRT users in 2026:
| App | Platform | PK Modeling | Multi-Compound | Bloodwork | Free Tier | Privacy |
|---|---|---|---|---|---|---|
| OptiPin | iOS only | Yes (TRT focused) | Yes | Basic | Limited (1 med free) | Local |
| Vially | iOS only | No | Yes | No | Generous | Local |
| Shotsy | iOS + Android (degraded) | Yes (GLP-1 focused) | Limited | No | Freemium (less on Android) | Local on iOS, cloud-dependent on Android |
| SteroidPlotter | Web only | Yes | Yes | No | Free | No account required |
| Spreadsheets | Any | Manual calculation | Manual | Manual | Free | You control it |
| Doseline | iOS + Android | Yes (all communities) | Yes | Context-aware ranges | Generous | Local-first |
No single option currently gives Android TRT users everything they need. That is the gap.
App-by-App Breakdown
OptiPin — The PK Pioneer
Credit where it is due: OptiPin was the first app to bring serious pharmacokinetic hormone modeling to a mobile interface. Their compound database is extensive — 50+ medications and peptides — and the PK curves for testosterone esters are genuinely useful. They show estimated serum concentration in the same units as your bloodwork, which is a detail that matters more than it sounds. They also pioneered vial inventory tracking with batch numbers and concentration logging, which is a nice touch for users who manage their own supplies.
The problem is everything around the core science. OptiPin is iOS only with no Android version and no apparent plans for one. The UI feels clinical and dated — functional, but not something you enjoy opening. The user base is tiny (around 25 App Store ratings), which means limited community feedback driving improvements. And the free tier only covers one medication, which is a non-starter for anyone running test plus an AI plus HCG.
If you are on iOS and only care about PK modeling, OptiPin is a legitimate option. If you are on Android, it does not exist for you.
Vially — The Best Pure Tracker on iOS
Vially is arguably the most complete injection tracking app available today, at least on paper. It supports 100+ compounds across GLP-1, TRT, and peptide categories. The free tier is generous — injection tracking, site rotation, weight and body measurements, side effect logging with dose correlation, and titration schedule support are all free. The AI lab scanning feature (photograph your bloodwork and extract biomarkers) is a compelling premium feature.
Where Vially falls short for TRT users specifically: there are no pharmacokinetic curves. You can log that you injected 100mg of testosterone cypionate, but the app will not show you where your estimated serum level is three days later. For a community that obsesses over peak and trough levels, that is a significant gap.
And the bigger issue for the purposes of this article: Vially is iOS only. Android has been “coming soon” for a while. The app also has a noticeable template-quality UI — functional, but lacking the design intentionality that makes you trust an app with your health data.
SteroidPlotter — The Web Tool That Does One Thing Well
SteroidPlotter deserves a mention because it does pharmacokinetic modeling better than most apps, it is completely free, and it works on any device with a browser — including Android. It claims 20,000 monthly users, and if you have spent any time on r/steroids or r/testosterone, you have seen its charts shared in threads.
You can plot multiple compounds simultaneously, adjust injection frequency, and see the stacked serum level curves. The compound database covers AAS, TRT, HRT, peptides, SARMs, and GLP-1 medications. For planning a protocol or visualizing what E3.5D versus E7D dosing looks like, it is genuinely excellent.
But SteroidPlotter is a plotter, not a tracker. There are no reminders. There is no injection history. There is no injection site rotation. There is no bloodwork logging. You cannot pull it up and see “I injected 80mg test cyp in my left delt three days ago and my estimated level is currently around 650 ng/dL.” It is a planning tool, not a daily companion. Many TRT users use SteroidPlotter alongside another tracker, which is a reasonable approach — but it means you are managing your protocol across two separate tools.
Spreadsheets — The DIY Option
Plenty of TRT users track everything in a Google Sheet or Excel file. And honestly, for a certain type of person, this works fine. You get total flexibility — custom columns, formulas for calculating days between injections, conditional formatting for bloodwork ranges, graphs if you put in the effort. Your data is yours. It works on any device.
The downsides are obvious: zero automation. No reminders unless you set separate alarms. No PK curves unless you build the math yourself (and most people do not). No injection site tracking. No body map. Every entry is manual. It is easy to fall behind, and once you miss a few entries, the history gaps make the data less useful.
Spreadsheets are the “I will build my own” option. Some people thrive with that. Most people eventually stop updating them.
Doseline — Cross-Platform From Day One
Full transparency: this is our app, and it has not launched yet. We are building Doseline specifically because the gap described in this article is real and nobody is closing it.
Doseline is being built in Flutter, which means iOS and Android ship simultaneously from the same codebase. Android is not an afterthought or a port — it is a first-class platform from the first line of code. Your data stays on your device by default. Cloud sync is optional, encrypted, and never required.
For TRT users specifically, Doseline includes pharmacokinetic modeling for testosterone cypionate, enanthate, propionate, and undecanoate — including blends and custom esters. Multi-compound protocol views let you see your test, AI, and HCG in a single timeline. Bloodwork tracking shows both standard lab reference ranges and TRT-specific target ranges, so you can immediately see whether your total T of 850 ng/dL is “high” by general standards but perfectly on-target for TRT.
The free tier is deliberately generous: unlimited medications, full dose history, all charts and PK curves, reminders, injection site rotation, weight tracking, body measurements, side effect logging, progress photos, calendar view, titration schedules, and biometric lock. Pro features are limited to things that genuinely cost infrastructure to deliver — AI-powered lab photo scanning, advanced trend analysis, PDF export, and multi-device sync.
We are not pretending to be first. OptiPin did PK modeling first. Vially built the most complete feature set. Shotsy proved the market. SteroidPlotter showed what free and open looks like. Doseline is building on everything they proved, with the explicit goal of serving every platform and every community from launch — not as a roadmap item.
What Makes Doseline Different for TRT Users
If you are on TRT, here is what Doseline brings to the table that no single existing option covers:
PK curves for the esters you actually use. Testosterone cypionate and enanthate are the workhorses of TRT, but the app also models propionate (for those who front-load or prefer shorter esters) and undecanoate (Nebido/Aveed for the long-acting crowd). Blends are supported. The curves are based on published pharmacokinetic data with appropriate disclaimers — these are estimates, not lab results.
Context-aware bloodwork ranges. When you log your total testosterone, Doseline shows you two things: where that number falls on the standard lab reference range, and where it falls relative to typical TRT target ranges. Same for free testosterone, estradiol (sensitive assay), hematocrit, hemoglobin, PSA, and a full lipid panel. No more Googling “is 950 ng/dL too high on TRT” — the context is right there.
Multi-compound protocol view. Test plus anastrozole plus HCG is one protocol, not three separate medications happening to exist in the same app. Doseline lets you view your entire protocol on a single timeline, see how compound schedules overlap, and understand the full picture. Protocol phases — blast, cruise, PCT — are first-class concepts, not hacks.
Injection site rotation with smart scheduling. A visual body map tracks every injection site with timestamps. The app suggests the next site based on your rotation history and recovery time. Delts, glutes, ventrogluteal, quads — all mapped, all tracked, all rotated properly.
Same app, same experience, on Android and iOS. Your data syncs across devices if you want it to. Your friend on an iPhone and your training partner on a Pixel are using the same app with the same features. No degraded experience. No mandatory cloud login on one platform.
The Bottom Line
Android TRT users have been making do with workarounds for years. The apps that actually understand TRT protocols — the ones with PK modeling, multi-compound support, and bloodwork context — have been locked to iOS. The one major app that technically has Android (Shotsy) treats it as a second-class platform with a worse free tier, mandatory cloud login, and no local data storage.
SteroidPlotter fills part of the gap for PK visualization, and spreadsheets fill part of it for data logging. But nobody has shipped a complete TRT tracking experience on Android.
Doseline is being built to change that. Not by copying what exists and adding an Android build, but by designing for every platform and every community from the architecture level up.
Doseline is coming soon for iOS and Android. Join the waitlist at doseline.app to be first in line.
Doseline provides informational tools, not medical advice. Always work with your healthcare provider on dosing and protocol decisions.