Looking for an app or way of recording kms
 

I have been on a combined low carb and exercise food eating programme since the end of May and am happy with current progress.

I have been making a manual record of how far I walk or exercise on my stationary bike each day and find it a good motivation.

What I am looking for is an app or some way of recording it on my iphone or pc so I can enter just daily km's exercised and see a graph of some sort.

I've looked at a lot of exercise apps but they all offer too much - mostly for tracking kms as you are walking/bicycling.

I just want to hope off my bike - look at kms and enter them somewhere.

Does anyone know if there is such an app or pc programme available that would do this.

Thank you