Android free app limit usage lock out
<p>I want to release a trial version of my Android App that can only run for a fixed number of days before it disables itself. What techniques could be used that would provide reasonable protection and achieve this? </p>

<p>I am hoping to avoid the need for a licensing server. But if I do need one does anyone know of any open source license servers that they would recommend. If not open source then any that are reasonably priced?</p>

<p>Thank you for your kind response</p>
