ThinkComputers.org checked out the Hollyland Lark C1 Wireless Microphone System for iPhone
A quote from the article:
Our phones are incredibly useful content machines and with vertical video really taking off they are the go-to when it comes to creating that type of content. While we'e got really great cameras on our phones with the ability to capture 4K video the audio quality isn't the best, especially if you are trying to do an interview or are further away from your phone. Well today we have an incredibly easy to use product that solves this problem. It is the Hollyland Lark C1 which is a wireless microphone system that is made to work directly with your iPhone.Hollyland Lark C1 Wireless Microphone System for iPhone Review