This app was mentioned in 2 comments, with an average of 1.00 upvote
I wouldn't worry about it too much. Only people I know that have had trouble there were because they had a big mouth. Don't bug anyone and I think you'll be okay. If you feel uncomfortable, use an app like Picket or Bambuser so you save evidence. Bambuser streams to their own servers, Picket streams to your Google Drive.
No fees? The Play Store description says it only has a 24-hour demo, after which it's $5.99 (one time fee).
Also, they're splitting away a "Picket" app whose Play Store description is identical to WardenCam](https://play.google.com/store/apps/details?id=com.warden.cam)'s. Weird.
On the plus side, they claim the live video connection is peer-to-peer so hopefully they don't store what's going on inside your home.