Cannabis Tracker App — Know What You Have Left
Stop guessing. Grams Left is a straightforward cannabis tracker that tells you exactly what is in your stash and how long it will last.
Start tracking free →We say “cannabis” throughout the app. But whether you call it weed, bud, flower, or something else — the tracker works the same.
You should not have to guess what is in the jar
Most people keep a rough eye on their stash and hope it lasts. Then Friday evening arrives, the jar feels lighter than expected, and suddenly the weekend looks different. A cannabis tracker solves this with three numbers: what you started with, what you have used, and what is left.
Grams Left was built because spreadsheets are fiddly, notes apps drift out of date, and mental maths fails after the second bowl. Tap a button. Your balance updates. That is all.
What you can track
Your stock
Enter what you have and watch your estimated balance update with every entry.
Your usage
Log each session by method and amount. Build a clear picture of your habits.
Your burn rate
See how quickly you are going through your supply. Spot changes in your pattern before they catch you out.
Different strains
Track each one separately so you know how much you have of each — not just one lump total.
Three taps. Done.
Set your stock
Add what you have. Your tracker starts with your real total.
Log as you go
Tap to record each use. It takes seconds — even one-handed.
Check your balance
Your running total updates automatically. No formulas. No maths.
Simpler than a spreadsheet. Faster than mental notes.
Spreadsheets need opening, scrolling, selecting the right cell, and typing a number. Notes apps do not total anything. And weighing the jar after every session is not realistic. Grams Left is built for one thing: recording what you use and showing what is left.
Works on your phone
Install from your browser to your home screen. Use it like a normal app — no app store, no download, no update prompts.
Offline, no signal needed
Log anywhere. Your entries sync when you are back online. Works in the garden, at a festival, or wherever you happen to be.
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 products at a time
- Archive old products and add new ones
- Log what you use
- Estimated burn rate and trends
- Export or delete your data
Plus
£2/mo- Everything in Free
- Unlimited active products
- Track each product separately
- Restock and batch history
- Per-product history and stats
- Backfill old entries
- Personal summary exports
- Early access to new features
Or £20/year and save £4. Cancel any time.
Stop guessing what you have left.
Your stash. Your tracker. Free to start. No card required.
Start tracking free →