Hi,
Sorry about the misunderstanding of your brief and placing a smile in my designs.
Personally as person I feel that charity and feeling good inside are connected and since your app is targeting to the app users and not the owners of the charity organizations I felt that a “smile” was a nice symbol to communicate your product.
Anyhow I created two new concepts
#31,
#38, if you like any of them please let me know.
Thanks
Pink