Sigma ROX 11.1 Evo

£170 Diminutive bike computer with plenty of data

THE SIGMA ROX 11.1 Evo has been designed to major on training functionality, complemented by GPS navigation that works in conjunction with Komoot and its own Sigma Ride app. The 1.77 inch display screen is small enough to sit unobtrusively on the bars but still packs in over 150 operations, including an emergency crash-notification feature. There’s no touchscreen, so you control modes via the four buttons.

The Evo can pair with compatible ebike and e-gear sensors as well as working on manual bikes and you can set up screens manually or using the app: we would recommend the latter. The format allows you to prioritise key data (speed, distance and `time) on the screen. You can then go a step further by highlighting your most-used stats in up to eight different colours and playing with their size to make it easier to keep an eye on your numbers. If you mix up your ride disciplines, you can also save up to 20 profiles.

In keeping with the clarity of the display, the Sigma Ride app has an exceptionally good layout for reviewing ride stats. In addition, every ride generates a Sigma Performance Index (SPI) score. This is a combination of distance, metres climbed and average speed for a comparison of different routes or even the same route on different days that allows you to see any performance gains.

Mapping is via routes uploaded from Komoot or Open Source Maps (OSM) via the app. The display shows a breadcrumb trail with direction arrows, which we were happy with on the road and most gravel routes, but off-road there were times that we needed refer to the in-app map.