Here is a nifty gadget that lets you record your conversations and calls easily. The iZYREC Audio Recorder has a compact design and can be easily attached to the back of your phone with adhesive velcro. It lasts up to 30 hours on battery. This audio recorder has one slide recording. It has AI noise cancellation and dual Knowles SiSonic mics.
You can record up to 2000 hours of recording to 32GB of memory. This gadget is iPhone and Android compatible. Its app plays your recordings with waveform graphics.