Yes, I understand. I have Vimeo Pro and see in the stats that many of the audience don't watch a video through. Frustrating, if one is putting in a lot of work.

Assuming you have a somewhat recent Android phone (> 4.3), I can highly recommend the CyberLink PowerDirector app. It gets close to professional video editing but is still very easy to use. I believe the app is free (don't remember), but you can buy extra features in-app. It's inexpensive at worst, anyway.

I have been running it on a cheapy LG phone and now on my Huawei P8. No crash yet. The app is maintained very well; they constantly add new features to make it better yet. Highly recommendable! Also, it renders 1080p video almost as fast as it plays and faster than my laptop.

I noticed that things which don't work on a lesser phone remain hidden. Ex: Second video overlay and 4K editing didn't show on the LG, but are available on the Huawei.

If you have watched my videos here, you have seen the results. I edited portions of them on my mobile, as it is a faster workflow. You can't tell the difference to the Vegas PRO Video from the laptop.

Check it out, you won't regret it:
https://play.google.com/store/apps/details?id=com.cyberlink.powerdirector.DRA140225_01&hl=en