Medical Cannabis App UK — Built for British Patients
A free medical cannabis app designed specifically for UK patients. Track your prescription, log your doses, and manage your treatment — privately, on your phone, and built to work the way UK prescriptions work.
Start tracking free →Designed around how UK prescriptions work
Medical cannabis in the UK works differently from other countries. You get a prescription for a set period — typically 28 or 30 days — and your medication arrives by courier from a pharmacy. Grams Left is built around this model from the ground up.
Prescription countdown
Set your prescription cycle (e.g. 28 or 30 days). See how long your supply will last and whether you will make it to your next prescription.
Works with UK clinics
Whether you are with Curaleaf, Alternaleaf, Mamedica, Lyphe, or any other UK clinic — Grams Left is your personal tracker, independent of your provider.
UK-legal framing
Grams Left is personal record-keeping software. It does not sell cannabis, offer medical advice, or promote misuse. It is a tool for patients managing prescribed medication.
British English
All content uses British spelling and UK date formats. Built by a UK patient for UK patients.
Privacy that respects UK patients
Your tracker records are yours. Grams Left does not sell, share, or broker your cannabis, prescription, consumption, or strain data to clinics, pharmacies, insurers, employers, or data brokers.
You can export your data from Settings or delete your account. We do not need to know what strains people have or how much anyone uses. Plus is £2/month because we would rather charge a small, clear subscription than monetise patient data.
Works on your phone, even offline
Install Grams Left to your home screen and it works as a progressive web app. Log doses even when you are offline — your entries sync when you are back online.
No app store download required. Visit gramsleft.com on your phone, add it to your home screen, and you have a full medical cannabis tracker that works anywhere.
How Grams Left works for UK patients
Add your prescription
Enter what you have and set your prescription cycle length.
Log as you use
Tap to record each dose. Your stock balance updates automatically.
Stay on top of your supply
Your countdown shows whether you will make it to your next prescription. No more guessing.
Free does the job. Plus goes further.
The core tracker is free forever. Upgrade when you want deeper tracking across more products.
Free
£0- Track your overall stock
- Up to 3 active strains at a time
- Journal, photos, notes and unlimited archived history
- Per-strain stock and restocks
- Archive old products and add new ones
- Log what you use
- Estimated burn rate and trends
- Prescription countdown
- Export or delete your data
Plus
£2/mo- Everything in Free
- Unlimited active strains
- Advanced stats and comparisons
- New prescription orders and cycle planning
- Guided catch-up logging
- Print or save your weekly review as PDF
Or £20/year and save £4. Cancel any time.
The medical cannabis app built for the UK.
Track your prescription, log your doses, and know exactly what you have left. Free core tracker. No card required. Works on your phone.
Start tracking free →