ThinLine Radio Scanner

This is a great mobile interface to both Rdio Scanner and ThinLine Radio scanner servers. The engineer behind it is very responsive to feedback, feature requests and bug fixes. They’re also in the first responder community so they understand the primary use cases extremely well. The server software has been released in beta since late December 2025 and has come a long way with tons of value add features and functionality! Only criticism is the sheer amounts of ads you get if you’re not subscribed to the app for $2 /mo which is WELL worth it to support maintenance and upgrades to the server and client apps.

We loved using Rdio Scanner for our scanner traffic, but ThinLine takes it to a higher level! ThinLine fixes all the bugs and issues with Rdio Scanner and adds on that, while utilizing a nice clean interface. The developer has been very responsive to bugs and problems and has gone above and beyond to correct them. Our listeners love the app, they love being able to choose the channels they want to listen to across multiple counties. Definitely get the ad-free subscription. It’s less than $1/month and helps support the developers while 100% improving the experience.

I am a first responder, and this app helps out tremendously! HIGHLY RECOMMEND! The creators are always keeping up with updates and making sure everything is working properly ! There are no delays and everything is real time , and can playback radio traffic and everything. Customer service gets back to you almost immediately if you have any issues or need help with something!