Supplements
Remember what you take, and when
Add what you already take from a researched library, set when you take it, and log it in one tap. 3Lite keeps count of your stock and warns you before you run out.
Replaces a supplement reminder app. Part of one app, for one subscription.
- One-tap logging with undo
- Stock that counts itself
- Never suggests amounts
Today's supplements. Screens show sample data.
How it works
Supplements, step by step
- 01
Add what you take
Search by name, brand or shorthand. Each entry shows a neutral summary, safety notes and numbered sources.
- 02
Set your schedule
Every day, chosen days, every few days, weekly, specific dates or as needed, several times a day if you like.
- 03
Log in one tap
Tap Log when you take it. Postpone to later, skip, or log a different amount. Nothing is ever added to make up for a missed one.
- 04
Never run out
Stock updates itself when the maths is exact and alerts you when it's low.
Key features
What you get, and why it helps
- A researched library
- Each record has sources with retrieval dates and its UK, US, EU and sport status where a source confirms it.
- Label strength and container size
- Record exactly what's on the label, so stock and history stay accurate.
- Safe unit conversions
- mcg, mg and g convert exactly; IU never converts to a mass. 3Lite won't guess.
- Duplicate protection
- A scheduled time can only be logged once, and a repeat within 10 minutes asks first.
- History and journal
- Search everything you've logged and note how you felt, with a reminder that timing can't show cause.
The numbers
Why it matters
Research and official figures behind this part of 3Lite. See all the numbers.
3 in 4
UK adults take supplements, according to a Which? survey, and two-thirds of them take them daily.
Source: Which?, 2025
37%
of UK supplement users had asked a healthcare professional for advice before taking them.
Source: Which?, 2025
10 µg
of vitamin D a day in autumn and winter is what the NHS advises everyone to consider.
Source: NHS, 2020
Good to know
- Supplements are for keeping your own records. 3Lite never recommends amounts, timings or products. Speak to a pharmacist or GP about anything you take.
Will 3Lite tell me which supplements to take?
No. It records what you've chosen to take, when, and how much you have left. It never recommends products or amounts.
Is creatine in the library?
Yes, along with vitamins, minerals, protein and many other everyday supplements. If something's missing, add your own private entry.
Also in the same app
EnhancementsSome members are prescribed TRT, HRT or a GLP-1, and some use other compounds. Enhancements gives them one private place to record it accurately, beside their training and progress. It's off until you switch it on.
NutritionSearch the UK government's own food tables, scan barcodes, and build meals and recipes. 3Lite shows what you've eaten and what's left of today's targets, without guessing.NotificationsPick the nudges that suit you: a morning plan, a lunchtime check-in, an evening review, workouts, supplements, water and bedtime. Quiet hours and a pause button are built in.
Start with 14 days free.
Training, food, sleep, supplements and progress in one app, for one subscription. No card to start.