World cup · Season 1
Every lap counts.
Runster is a Bluetooth tag for your hamster's wheel. It counts every rotation, all night, and puts speed, distance and records on the world leaderboard — while you sleep.
01 · How it works
Mount, plug, sleep.
Two pieces of hardware and zero setup. No pairing, no app running in the background, no phone left by the cage.
Mount the tag
A coin-sized gyro tag clicks onto the outside of the wheel with the mount for your wheel size. Works on any wheel — plastic, wood, metal, flying saucer.
Plug in the gateway
A small listener by the cage picks up every rotation the tag broadcasts, 24/7. Phones can't scan Bluetooth in the background — the gateway can. It ships with every tag.
Wake up to the numbers
Distance, top speed and personal bests are computed server-side and land on the leaderboard. Hamster days run 12:00–12:00 so a night run is never split in two.
02 · The tag
Measure while you sleep.
Hamsters run at night. The tag sits on the wheel, the gateway listens by the cage, and the numbers are waiting in the app in the morning.
Season 1 hardware
“Nisse ran 2.3 km last night” — without the app even being open.
A coin-cell gyro tag on the wheel broadcasts every rotation over Bluetooth. No pairing, no app in the background, no phone left by the cage at 3 AM.
- Tag on the wheelMount included · 8+ Hz updates
- Gateway by the cageListens 24/7 · ships with the tag
- CloudEvery rotation stored, sessions built automatically
- App in the morningDistance, top speed, records
Gyro, not a magnet
Measures rotation directly, so it works on any wheel — plastic, wood, metal, flying saucer — with no counterpart to align.
Months on a coin cell
Low-power firmware sleeps between laps and reports its own battery level, so the app tells you before it runs out.
Nothing to pair
The tag only broadcasts. No connection, no account on the tag, nothing to configure on the wheel.
Race the world
Season standings by species and wheel size. Your hamster's night run shows up next to hamsters in Tokyo and Toronto by breakfast.
03 · Health
Health, not just speed.
Reduced wheel activity is one of the earliest illness indicators in rodents — well established in laboratory animal science. A baseline turns a toy into an early-warning system.
14-day rolling median
Every hamster gets its own normal. Seasonal, age and species differences are built in.
Deviation alarms
“Nisse ran 60 % less than usual three nights in a row.” Simple statistics, genuinely useful.
Exportable history
A one-page activity report you can hand your vet — the kind of data they never get to see.
A baseline needs every night, not just the ones you remember to check. Reserve the tag →
04 · FAQ
Questions
Is it safe for the hamster?
The tag weighs about as much as a coin and is fixed on the outside of the wheel, away from the running surface. The battery compartment is sealed — hamsters chew on everything, and we design for it.
Which wheels does it fit?
Standard spoked wheels, solid wheels and flying saucers — the tag ships with a mount for your wheel size. Tell us your wheel diameter when you reserve and the right mount is in the box.
Do I need the gateway?
Yes. Hamsters run at night and phones don't scan Bluetooth in the background, so the gateway is what makes 24/7 measurement possible. That's why it ships with every tag — there is no tag-only option.
When does it ship?
Reservations fund the first production batch. No payment is taken now; we email you with a firm date and price before anything is charged, and you can cancel any time.
Which phones does the app support?
iOS and Android. The tag doesn't care which phone you have — the gateway does the listening, the app just shows the numbers.
05 · Batch 1
Reservations decide how many tags we build.
Reserve now and you get first pick when batch 1 ships. Nothing is charged until you confirm the final price.
Pre-order the tag