Poweramp Full Version Unlocker does not offer a free trial; it is a paid app that unlocks the full version of the Poweramp music player. However, the Poweramp music player itself may offer a trial period to test its features before purchase.

Poweramp Full Version Unlocker does not require an internet connection for its core features once it is installed and activated. However, some features like online album art retrieval may require internet access.

You can contact support for Poweramp Full Version Unlocker through the official Poweramp website or the app's support section, where you can find contact information and submit feedback or inquiries.

Since Poweramp Full Version Unlocker is a one-time purchase, there is no subscription to manage or cancel. If you have questions regarding refunds or purchases, you can refer to the app store from which you purchased it.