Ads ruin the the trial – Geocaching Widget Review

I understand developers use ads to support the software. What I don't understand is the need to have a banner ad plus full screen ads at such a frequency that I cannot test the trial before I purchased it. I installed the app, opened it and logged into my geocaching.com account, closed a full screen ad, clicked on the first cache listed and then another full screen ad. Next step was to uninstall. I'm sorry but this cripples the trials usability.
Review by WS.Weeden on Geocaching Widget.