Real permissions, ads, age rating, and privacy policy for Snapchat — live-scraped from its Google Play listing, not curated.
Yes, Snapchat is ad-supported according to its Google Play listing.
Snapchat carries the age rating Teen on Google Play.
Snapchat declares 25 permission group(s) on Google Play, including find accounts on the device, read your own contact card, read your contacts, modify your contacts, precise location (GPS and network-based).