In-app challenge
One week to compare bottled water with a refill routine
Bottled water is the most common thing people scan first. This challenge turns that into a comparison: scan the bottles you actually buy during one week, then put them next to filtered tap water in a steel or glass bottle.
Free to join · No purchase required · iOS and Android
How the challenge works
Scan the bottles you drink
Single-use, multipacks, sparkling. Each scan returns a product-contact signal with the material and use behind it.
Run the water quest
The quest walks through the bottle, the cap and the refill option, one step at a time.
Compare with a refill routine
See the bottled score beside tap water in steel and decide whether a refill habit is worth keeping.
Why bottled water
Bottled water is where many readers start: our guide to how bottled-water brands compare is the most-read page on this site. Published studies have counted particles in some brands and lots, but those results describe specific samples and methods, not the bottle in your hand today.
The challenge keeps the claim narrow. The app compares the packaging and use conditions of what you drink, which is something you can change, and leaves particle counts to the studies that measured them.
- Runs
- November 23, 2026 to November 30, 2026
- Format
- Challenge · Free to join
- Where
- On the App Store and inside the app
- Needs
- The free app, no account required
What a week can show you
The comparison is built from your own scans, so it reflects what you actually buy.
Your most-bought bottle
The one you scan most often is the swap with the biggest payoff.
Heat and storage
Bottles left in a warm car or in the sun score differently from those kept cool. The report shows why.
Cap and lid
Caps are a separate material from the bottle body; the report lists both.
Your refill baseline
A steel or glass bottle with filtered tap water gives you a reference point for every other scan.
More events
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Scan what you eat and drink, find lower-plastic swaps, and watch your exposure drop.
Major Update
A Whole New MicroPlastics
August 2, 2026 to August 17, 2026
A cleaner look, instant scanning with no account, your Plastic Passport, and matched swaps.
Challenge
Back to School Lunchbox Check
August 16, 2026 to September 7, 2026
Scan the lunchbox, the bottle and the containers before term starts.
Major Update
Scan it. Score it. Swap it.
November 9, 2026 to December 6, 2026
Scan food, drinks, containers or beauty items, see what drives each plastic-contact score, and try a lower-plastic swap.
Challenge
New Year Kitchen Reset
December 28, 2026 to January 4, 2027
Scan what you microwave or keep leftovers in, find your top driver, and pick one lower-plastic swap for the new year.
November 23 to 30
Open the event in the app and scan the next bottle you pick up. Three scans are free.
Free · 3 scans included · No credit card required