RadioScanUBC125 USB OTG is a scanner app by PulsStarInc for Uniden UBC125XLT scanner. The app requires an OTG cable to connect the phone or tablet to the scanner. It allows users to read and write channel data of their scanner using their smartphone or tablet. The app can also display and operate the Bearcat button group for real-time control functions. With the special search function, users can see the frequency and signal strength of a transmission for a given start-end frequency during a time frame. The step frequency and squelch can be changed, and a log file is stored in /storage/sdcard0/RadioScan(Pro)/logs. The app is free to use and can read Excel files (.xls format). However, the RadioScanProUBC125 app is available for more advanced functions. The app requires runtime permissions for audio recording and storage access, which must be explicitly authorized by the user. It is tested to work on Android 5-13 and may have some minor issues when controlling UBC126AT(Australia) scanner.