The TRT app that turns 90 days of data into sentences you can act on.

Check in. Log your shots. Sync Apple Health. After 90 days, TRT Companion surfaces what's actually working — dose timing, blood work trends, sleep, recovery — as plain-language insights you can take to your doctor.

Download on the App Store
From £5.99/mo · Annual from £39.99/yr · 7-day free trial · No account required
TRT Companion Protocol screen
TRT Companion Today screen
"

This app is great. It's made it easy for me to track and log my dose, as well as track how I'm feeling and the consequences of missing a dose. I like that it integrates my labs and health metrics as well so I can open less apps to see what's going on with my system. Solid app.

James ★★★★★
"

This app has been a game changer. At a time when starting such a journey feels overwhelming and daunting, having an app like this enables you to see everything clearly and keep on track with it all.

Ben ★★★★★

See your TRT clearly. Every peak, every trough, matched to how you felt.

Level Estimation · This week Sleep 9.1 hrs · HRV 34ms · from Apple Health
100% 50% 0% Today Fri Sat Sun Tue Wed
Mood dips here 3.1 / 5 · every cycle
HRV climbs here +9 ms · from Apple Health
Testosterone Cypionate 97%
HCG 43%
Tadalafil 100%

TRT Companion Check-In screen

Is it the testosterone? The sleep? The stress? Or just Tuesday?

A 30-second daily check-in rates energy, mood, libido, sleep, and gym. Your composite score is matched against where you are in your injection cycle, so patterns like "energy always dips on day 3" surface automatically. Sleep, HRV, resting heart rate, and weight come straight from Apple Health — no typing required.


Wednesday you injected. Friday you felt incredible. That's not a coincidence.

TRT Companion matches every check-in against where you are in your injection cycle. After a few weeks, patterns emerge you'd never spot on your own — the best day, the worst day, the one meal or workout that always moves the needle. You stop guessing what's working.

TRT Companion Weekly Summary screen

TRT Companion Insights screen

After 90 days, patterns become facts.

Connects every data stream you're already generating — daily check-ins, blood work, Apple Health, protocol history — and surfaces the correlations that matter. Months of scattered numbers turn into sentences you can act on.


Your hematocrit has climbed 3% across your last three blood tests. Worth mentioning to your doctor.

Blood work · 1 Mar 202638 markers tracked
Hematocrit
Borderline
48.8%
48.8
3850
Sep Dec Mar 45.1 47.2 48.8
Trend · 3 tests · 6 months
Up 3.7 points since September. Approaching the top of the reference range.
Estradiol (E2)
Normal
121pmol/L
121
37185
Sep Dec Mar 98 110 121
Trend · 3 tests · 6 months
Rising with testosterone dose. Within range but worth watching.
Free Testosterone
Normal
0.68nmol/L
0.68
0.301.00
Sep Dec Mar 0.52 0.61 0.68
Trend · 3 tests · 6 months
Climbing steadily and comfortably within range.
Total Testosterone
High
29.6nmol/L
29.6
829
Sep Dec Mar 22.5 26.1 29.6
Trend · 3 tests · 6 months
Just above the reference range — discuss dose with your doctor.
Tap any marker to see its trendAny lab report — AI-extracted from PDFs or photos

Every blood test is logged with reference ranges and reading trends automatically. You don't need to remember what the numbers meant last time — the app surfaces anything moving in the wrong direction, across three tests, six months, or a year.


Your doctor gets 10 minutes. You've spent 3 months living this. Make them count.

One tap generates a clinician-ready PDF with your current protocol, three blood-test trends, wellness scores, and any side effects you logged. Email it to your doctor before the appointment so you arrive on the same page — and leave with a plan, not a promise to check back.

TRT Companion Doctor Report screen

Your Apple Watch already knows how you slept. Why would you type it in again?

Apple HealthRead-only · 7 data types
Live · updated 9:41
Sleep
9.1hrs
Last night · 23:14 – 08:20
Heart rate variability
34ms
Overnight avg · 06:42
Resting heart rate
68bpm
Rolling 7-day
Workout
52min
Strength · 08:14 today
Body fat
23.5%
From scale · this morning
Weight
75.0kg
This morning
Steps
8,234today
Since 00:00
Read-only accessHealthKit · granted 12 Sep 2025

TRT Companion reads from Apple Health, never writes to it. Sleep, HRV, resting heart rate, workouts, body composition, and weight populate your check-ins automatically — you confirm what's right and add what's missing. The app gets smarter with every day it watches.


You just got your blood results. Now what — type in 32 numbers by hand?

Snap a photo or upload a PDF. AI extracts every marker in seconds. You review, confirm, and it's tracked — with reference ranges and trend charts built automatically. Works with any lab report — the AI extracts markers from PDFs and photos, whatever the format.

TRT Companion Blood Work screen

No account. No cloud required. No one sees this but you.

No account required
Install · use · done
Your data lives on your device
iCloud backup · optional · encrypted
Zero tracking, zero analytics
No SDKs · no pixels · no ads
HealthKit is read-only
Never written · never shared
Export everything, any time
CSV · JSON · PDF

Your TRT journey contains some of the most private data you'll ever record. We treat it like it's ours — and keep it off every server we can. The only time any of this leaves your phone is when you explicitly share a report with your doctor.


Everything included. Pick how you pay.

Monthly
£5.99/ month
Get TRT Companion
Annual
£71.88 / year
£39.99/ year
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© 2026 TRT Companion · Not medical advice PrivacyTerms