[smnl]

Yup, it was adapted from geoguessr.com, and I'm trying to extend the concept by adding different game modes and in-game hints

In reply to your questions: 1. What do you mean by similarity measure? Currently, the scoring is just done on a tiered basis on geographic distance, though that scale might be worth adjusting

2. Currently, it uses a webview to show the street view, and moving around is disabled because that tended to crash the app. However, now that Google just added street view to its iOS maps api, I'm planning to integrate that

3. Yes, all of those things you listed can help determine where a landscape is. I haven't thought about formally classifying those features, though it could be something worth exploring

Thanks for the feedback! Will reach out to you if I figure out a way you can help with this!