Can't delete favorites (resolved) – Art Explorer for deviantART Review

Update: Thanks to dev. Clearing app cache made space and did NOT delete favorite images or reset anything. Also, I discovered how to remove favorites when no longer needed. Raised rating to 5 stars. ------------------------------ former review: Nearly perfect. The only issue is faving pics uses a lot of phone space. If I don't need pics faved later, there is no way to delete favorites except to uninstall app and lose everything! Note - It doesn't say if clearing cache erases pics. There's no way to reach app maker in-app.
Review by Yeah - I said it! on Art Explorer for deviantART.