Just a comment about Sky Guide. I can't find a way to reinstall the app on a new iPhone. I've tried emailing Fifth Star Labs and filling out the Comment form on their website (multiple times) and have heard nothing.
Don't expect any support from the seller of Sky Guide.
Sorry for the negative fist post. I tried to comment on the article, but it never showed up there. Should I ever hear from FSL, I'll be happy to edit this post.
Edit: Happy to report that after a month and a half, and six attempts to contact Fifth Star Labs, I finally received a response. From their suggestion, I did some further digging and found a solution to my reinstallation issue. Better late than never, I suppose.