Bicycle mode not usable, because misses orientation lock

Very easy to use and powerful. I used this app with my bike several times this summer.

When planning any route, you can select "bicycle route" option, which will avoid high traffic roads, and give time estimates at bicycle speed. I found the route suggestions very good for biking, and time estimates a little too pessimistic. Though I ride probably faster than average, and its better to estimate longer time than shorter time.

However, there is one feature missing, that makes it unusable for biking: screen orientation lock. When mounted on the bike handlebar, the iPhone is flat, or say slightly titled toward me. Since its not perpendicular to the ground, the orientation is not clearly defined, and the iPhone will randomly switch screen orientations. 50 % of the time, the iPhone display will be rotated 90° and impossible to use while biking.

Francois B. about TomTom Western Europe, v1.8