Play Store comments are too limited for this purpose. Please use the email link shown to report any issues.After using on your device in free mode please consider purchasing the Pro Upgrade to unlock other features.Be sure to read the full help text accessed from the Options menu of the Settings window when the app is active.Please let the developer know what you find. Advanced operation likely will require ROOT. So please use it rather than employing the comment/rating mechanism for the app on the Play store. An email link is provided on this page for that purpose. For most Android devices with Honeycomb and above but tested only on Samsung Note I and Minix Neo X5 with Jelly Bean.