Signal TRT
Your TRT logbook and journal
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Signal is a logging and reflection companion for men on testosterone replacement therapy. It gives you one private place to record your protocol, your symptoms and your bloodwork, and to see the patterns in your own logs over time.
Signal organises and reflects your information back to you. It does not give medical advice, and it is not a substitute for your clinic or doctor.
What you can do with Signal:
- Log your protocol. Record your compounds, doses and frequencies, your injection dates, sites and notes, and keep your full history in one place.
- Log how you feel. Guided scenarios help you record symptoms and day-to-day changes, from sleep and energy to mood and libido, in a structured way.
- Keep your bloodwork together. Photograph a blood panel and Signal captures the values for you, or enter them by hand. Each marker comes with a plain-English explanation of what it is, and your results are organised so you can see them over time.
- Add context from your fitness tracker. With your permission, Signal can bring in sleep, heart rate variability, resting heart rate and activity to sit alongside your logs.
- See written reflections of your own data. Signal produces clear written summaries from what you have logged, so you can step back and see the bigger picture.
- Prepare for your appointments. Turn your logs and bloodwork into a report you can take to your clinic or doctor.
Signal Core and Signal Pro are available, with a free 14-day Pro trial. Signal is built for adults aged 18 and over who are on TRT or actively considering it.
Important: Signal is a logging and reflection tool. It does not provide medical advice, diagnosis, treatment or clinical interpretation, and it is not a substitute for advice from your clinic or doctor. Always speak to a healthcare professional about your treatment.
Privacy Policy: https://signaltrt.com/privacy
Terms of Use: https://signaltrt.com/terms
Ratings & Reviews
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Your ester curve
See the typical pattern for your compound and schedule, and compare how injecting more or less often changes the shape. It is a population pattern for the ester, not a prediction of your levels.
A rebuilt first session
Your protocol now takes shape as you enter it. Your dose, your week and your curve appear as you go, so you can see what you have recorded before you finish.
Daily insights
Drawn from your own log, with two a day on Pro.
More reliable reminders and notifications.
A full design pass across the app.
The developer, Sanderson Management Services Limited, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Contact Info
- User Content
- Identifiers
- Usage Data
- Other Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Sanderson Management Services Limited
- Size
- 46.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Frequent
Medical Treatment information
Alcohol, Tobacco, Drug Use or References
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Signal Pro (Annual) $49.99
- Signal Core (Annual) $39.99
- Signal Pro (Monthly) $6.99
- Signal Core (Monthly) $4.99
- Copyright
- © 2026 Sanderson Management Services Limited