Will the resources be released after a third-party app closed

Hi,

Quite a lot of users told me that their devices drains fast after using my app JumpJump Pro, in which case I have been wondering if the resources will be correctly released after exiting and if there were some escaped threads running continously. This problem occurs on venu2s,fr245, and so on. As third-party developers, we don't have the access to monitor the system resources' usages on real devices. So do you have any idea to solve this issue? Or how can I release the battery consuming resources properly?

Thanks in advance.