Probably not, because your users are people who will forget to cancel and then forget to tell you about that.
> Some people also like having the subscription because it is a pay per use model
What does this mean? It sounds like users are complaining that if they download the app and don't use it it charges them $100.
> Would love any suggestions on how to improve this.
Howabout when the free trial ends, at that time the user has to approve a charge before continuing to use the app.
Probably not, because your users are people who will forget to cancel and then forget to tell you about that.
> Some people also like having the subscription because it is a pay per use model
What does this mean? It sounds like users are complaining that if they download the app and don't use it it charges them $100.
> Would love any suggestions on how to improve this.
Howabout when the free trial ends, at that time the user has to approve a charge before continuing to use the app.