Trekeffect Wireframes

Did some wire-frames today for trekeffect.com for their mobile app. Still at very early stage. Now it'd be great to get some expert advice about UX of the app.

Here's the wire-frame:
https://redpen.io/oy78b96923ff561bb3

I'd love to get some constructive feedback from you guys.

Thank you very much. Have a nice day!