: Occasionally offers a one-month free trial for their scanner app using promo codes (e.g., "RDIOTRIAL"). 5-0 Radio Pro : Often has "free for a limited time" promotions on the Apple App Store that include recording and rewind features. to earn your free Premium account? 5-0 Radio Pro Police Scanner - App Store - Apple
Since there is no button for "Start Free Trial," here is the best way to evaluate if Premium is right for you: broadcastify premium free trial