A free app for Android, by laminn.

Google Podcasts Downloader is a free, simple, and safe tool that allows you to download podcasts from Google Podcasts. You can easily save and listen to them on your Android device, or any device that supports MP3. It works offline, so you don’t have to worry about your Internet connection. It also has a simple and intuitive interface.

Once you have downloaded the app, you can listen to your favorite podcasts. You can choose to download all the episodes of a podcast at once, or you can download individual episodes. It is completely free, so there is no need to worry about any in-app purchases.