Okay, I have CycleBike installed on my Android phone. How do I attach it to my bike? Without looking too weird. First, get the smallest phone you can find. I have a Sony Xperia Active and a Sony Xperia Mini. They're both old phones and run old Android operating systems, but they run the CycleBike app. They even make phone calls. Here's a photo of the Sony Mini attached to the stem with a Polar quarter-turn mount.
Sony Xperia mounted on the stem.
I used an old mount from a Polar bike computer attached to the back of the Sony and a replacement Polar quarter-turn mount attached to the stem. You can see how I've fixed it to the phone in this photo:
Another option is the Quad Lock, which attaches to the phone with a press-on adhesive. You can see it here mounted to a Samsung Core Android phone.
You don't need an expensive phone to run the CycleBike navigation app. I bought the Samsung for $50 on eBay.