Best TRT Tracker App for the UK: Sustanon, Nebido, and Daily Microdosing (2026)
Sustanon's multi-ester PK profile, Nebido's 10-week intervals, and daily microdosing all need a tracker that understands UK protocols.
Key takeaway: UK TRT protocols have unique requirements that generic health apps cannot handle. Sustanon 250's four-ester blend creates a distinct pharmacokinetic profile. Nebido's 10-14 week intervals mean you need an app that handles long gaps without treating them as missed doses. Regimen is built for these exact scenarios — multi-ester compounds, long-interval protocols, and daily microdosing.
Why UK TRT Users Need a Dedicated Tracker
Sustanon 250: The multi-ester challenge
Sustanon is not a single compound. It is a blend of four testosterone esters, each with a different half-life:
- Testosterone propionate (30mg) — peaks within hours, clears within days
- Testosterone phenylpropionate (60mg) — intermediate, peaks at 1-2 days
- Testosterone isocaproate (60mg) — intermediate-long, peaks at 2-4 days
- Testosterone decanoate (100mg) — longest, peaks at 5-7 days
A tracker that models Sustanon as a single compound with one half-life is giving you inaccurate level estimates. Regimen models each ester individually, so the level curve you see reflects the multi-peak pharmacokinetics of Sustanon.
Nebido: The long-interval problem
Nebido injections come every 10-14 weeks. Most tracker apps are designed around daily or weekly medication schedules. When your next dose is 84 days away, a standard reminder app either keeps showing 'overdue' for months or does not understand the concept of a 10-week injection interval. Regimen handles long-interval protocols natively.
Ready to track your protocol?
- Smart reminders so you never miss a dose
- Progress tracking with photos and weight
- Medication level curves for every compound
Daily microdosing: The volume problem
An increasing number of UK men are switching to daily subQ microdosing — even with Sustanon. This means 7 injections per week to log, tiny volumes (0.07-0.14 mL) that need insulin syringe unit conversion, and injection site rotation across 4-6 sites.
What to Look for in a UK TRT Tracker
| Feature | Why it matters for UK users |
|---|---|
| Multi-ester support | Sustanon 250 needs compound-specific modelling |
| Long-interval scheduling | Nebido 10-14 week cycles |
| Insulin syringe unit conversion | Daily microdosing with 29-31 gauge syringes |
| Blood work logging | Track nmol/L results alongside protocol |
| Injection site rotation | Prevents lipohypertrophy with daily protocols |
| Multi-compound support | TRT + HCG + peptides on one dashboard |
| Level estimation | Visual curve showing estimated current T levels |
Regimen vs Generic Trackers
| Feature | Regimen | MyFitnessPal | Notes App | Spreadsheet |
|---|---|---|---|---|
| TRT-specific dose tracking | Yes | No | Manual | Manual |
| Multi-ester PK modelling | Yes | No | No | Complex formula needed |
| Injection site tracking | Yes | No | Manual | Manual |
| Blood work integration | Yes | No | No | Manual |
| Insulin syringe unit conversion | Yes | No | No | Manual |
| Long-interval support (Nebido) | Yes | No | No | Manual |
| Level estimation curve | Yes | No | No | No |
| Multi-compound stacking | Yes | No | Manual | Manual |
Getting Started
Regimen works with any TRT protocol available in the UK:
- Sustanon 250 — fortnightly, weekly, or daily microdosing
- Nebido — 10, 12, or 14 week intervals
- Testosterone enanthate (Testoviron Depot) — available through some private clinics
- Testosterone cypionate — available through private clinics and compounding pharmacies
- Testogel/AndroGel — daily topical application
Set up your compound, dose, and frequency. Regimen handles the rest — reminders, level estimates, site rotation, and blood work tracking in nmol/L.
Frequently Asked Questions
Track your UK TRT protocol with Regimen — Sustanon, Nebido, enanthate, cypionate, and daily microdosing. Blood work in nmol/L. Free for one compound.
Regimen is a tracking tool, not a medical service. We do not provide medical advice. Always consult your healthcare professional before starting, changing, or stopping any medication protocol.