Wahoo RPM Cadence sensor (2)

The purveyors of iPhone powered fitness devices now have their sights set on cadence sensors. Thanks to the new Wahoo RPM Cadence Sensor, constantly misaligned magnets are a thing of the past. The tiny 7g, coin cell operated RPM simply affixes to your crank and pairs with most Bluetooth 4.0 or ANT+ compatible devices to provide the necessary cadence feed back. Due to the fact that the RPM does not use magnets, it can also be installed on your shoe as a footpod for public spin bikes, or if you want to easily use it on multiple bikes.

Battery life, installation requirements, and more, next…


Wahoo RPM Cadence sensor (1) Wahoo RPM Cadence sensor (1)

If you choose to mount it to y our bike instead of your shoe, the RPM can be mounted to the non-drive crank arm in two ways. Included double sided 3M tape will allow it to be mounted as cleanly as possible, or you can use the silicone sleeve and zip ties for a more conventional mount. At only 7 grams, the RPM is extremely light and will operate up to 2 years on a single coin cell battery.

Available for $49.99, the RPM is compatible with iPhone 4s and newer (running the latest ios), as well as compatible Android devices, iPod Touch 5th gen, and iPad 3rd and 4rth gen as well as other devices with Bluetooth 4.0 or ANT+ connectivity. The sensor is also compatible with a number of popular cycling apps like Strava, MapMyRide and Cyclemeter.



  1. Nice product, but it looks from their website like they’re only selling the sensor bundled with either a case or a whole new iphone interface! I’d just want the sensor, as I already have a case, so I’ll be waiting to see if that option appears (and how much it’ll cost).

  2. My experience has been pretty spotty with it actually working. Seems fine around 80 rpm, when you push the cadence above that and closer to 100 it starts to send 0 cadence readings back.

  3. @Ben and @Chris P: Thanks for the link, but it dumps me at Wahoo’s home page, and when I search their site, I still only get the two hits I previously mentioned – the ‘PROTKT Cadence Bundle Pack’ at £69.99 and the ‘RFLKT Cadence Bundle Pack’ at £109.99. Will keep checking back, though!

  4. So for only a few dollars more than a Garmin GSC-10, I get cadence only, with no speed? Thanks, I’ll stick to the Garmin ecosystem. The only advantage here would appear to be that I can use either a Garmin head unit or an iPhone (ANT+ or Bluetooth 4 connectable device)? Thanks, but honestly, why not speed also? THEN it would be worth it.

  5. I spent 6 months developing a competing product (I started working on it before the RPM was even announced). Mine is half the size and weight of the RPM. Decided I didn’t want to go through the hassles of crowdfunding and Chinese manufacturing, so I never sold or marketed it.

What do you think?