RadioPlay is a free iPhone application developed by Bauer Media Oy that offers a diverse range of popular Finnish radio channels, programs, and podcasts. The app provides an excellent platform for audio entertainment, allowing users to connect it with AirPlay, Chromecast, or CarPlay. With RadioPlay, you can listen to popular Finnish radio channels like Radio Nova, Radio Iskelmä, Basso, Ysäri, Kasari, SuomiRäp, Radio City, KISS, SuomiRock, Radio Classic, Radio 957, Radio Pooki, NRJ, Radio Nostalgia, Auran Aallot, and Radio Pori.

RadioPlay also offers a premium service that allows users to access additional features for a monthly fee of €4.99 after a 30-day free trial. Users can cancel their subscription at any time, and the cancellation will take effect after the last paid day or at the end of the trial period.

Overall, RadioPlay is an excellent application for anyone looking for a comprehensive collection of Finnish radio channels, programs, and podcasts in one place. The app is easy to use and offers a seamless audio experience. However, it would be better if the app's developers could improve its accessibility for users with disabilities.