The Powertap Powercal is a heart rate monitor belt with clever software in it that calculates power from heartrate. It doesn’t need fitting to pedals or crank, so you can use it on multiple bikes, even on footbikes and elliptical trainers.

The USB access to Fenix GPS watches makes it really easy to view activities and tracks on a laptop: just plug in the USB cable and you’re done. But on a phone it requires something extra: a powered USB hub. Fortunately, there are very small ones around.

Update: This article is outdated. The Garmin Connect Mobile app now (February 2018) requests your consent to upload your data. It is not necessary anymore to use the options below. This page is here for reference.

This affordable and surprisingly complete activity tracker with optical heartrate sensor does the job and is simply good value for money. A review after 4 weeks with it.

Garmin heart rate monitor straps are very high quality, but quite expensive. Polar HRM straps (Polar SoftStrap) are a more modestly priced alternative. They are compatible, but have to be modded a little bit.

Have you ever found yourself navigating with your smartphone while you really would have rather used that cool wrist-worn GPS device, but you forgot to upload the waypoint beforehand? No more embarrassing moments like that, because now there is IQMapReceiver.

Have you ever wondered how long ago you last reset your Fenix 2, if the ROM and RAM are OK, or if all the pixels are in proper working order? You can find out!

Activity trackers are now everywhere, on adults, kids and dogs. An ocean of activity and sleep data is collected 24/7. The well-known brands are quite expensive, but there are lots of cheaper new devices these days. Are they just as good? The best way to find out is to try it.