Part 1. How to Record Audio from YouTube on Mobile Devices
Mobile phones are the most common devices which we used for listening to music on the go. By recording music on mobile phone directly, you don't need to transfer them from computer again.
Record Music from iPhone
Ever since iOS 11, iPhone has been integrated with the free screen recorder. This means you can record your iPhone screen together with the in-app audio directly. You can also turn the microphone on so that you can record your voice too.
But if you just want to record music from your iPhone/iPad/iPod Touch, obviously the screen recorder is not a best option because it combines the screen recording which will make the output files really big.
In this case, you can try the free online audio recorder called TheYouMP3.com. It is one of the best YouTube MP3 grabbers which can help you get the job done within a few clicks.
Step 1. Find the URL of the YouTube video which you want to record as MP3.
Step 2. Visit TheYouMP3.com with the Safari on your iOS and then copy to input the YouTube link.
Step 3. You can click "Convert" to start recording YouTube music. When it is done, you can click "Download" to save the MP3 file to your iPhone.
Rip Music from Android
For Android phones, the default recorders are different from different brands like Samsung, Huawei, Pixel, OnePlus, ViVo and so on. For your convenience, I will recommend a universal yet best YouTube MP3 Extractor called Peggo. It allows you to rip audio from YouTube videos on Android with 2 quick taps. Let me show you how does it work here.
Step 1. Download and install Peggo app for free on your Android phone. It is not available from Google Play store, so you need to make sure to enable the option to install apps from unknown sources on your phone.
Step 2. Share a video from YouTube to Peggo.
Step 3. After sharing, the app will be ready to download an MP3, please just tap "Record MP3". When it's finished, you can find your recording in the Peggo folder.