In the past few years, we have covered a wide variety of apps that let you record audio on your phone. JIC for iPhone can also help. It lets you record calls and personal conversations conveniently. It has a microphone, speakerphone, record button, and everything you need to record important ideas or events.
The case comes with a 2 GB microSD card to capture audio. JIC can get the job done discreetly and has a battery that lasts up to 8 hours. The product is getting funded on Indiegogo.