Audio Recorder is one of the simpler voice recorder apps. Don¡¯t let its ease of use fool you, though. It¡¯s a pretty fun little recorder. Its big draw is that it supports a couple of actual microphones that are capable of recording some pretty decent audio. Aside from the hardware support, it has the basics. You can record stuff, save it, upload it to various platforms (including cloud storage), and more. The app is also free to download with no in-app purchases or advertisements (for now).
Hi-Q is one of the more powerful voice recorder apps out there. It records in MP3. That makes the sound files compatible with virtually everything. Along with that, you can have it upload automatically to Dropbox once recording finishes. It also comes with widget support, the ability to choose which mic on your device you want to use (assuming you have more than one), support for Wi-Fi transfer, gain control, and more. The paid version adds a few more features as well. The only downside is that it doesn¡¯t support phone call recording.
Parrot is one of the better all-in-one voice recorder apps and call recorder apps. It features Material Design, call recording capabilities, scheduled recordings, cloud storage support, Android Wear support, and more. It's mostly meant for business use such as recording meetings or phone calls with clients. However, its swath of customization features make it useful for almost anybody. The price can get a little expensive, though.