What are some alternatives?
When comparing Caption Writer for Instagram and Pretty Captions, you can also consider the following products
Instaspacer - Putting the spaces back into Instagram
Captioned - Say, show, share. Create a 60 second captioned video.
Drake Captions - Find the perfect Drake lyric for your Instagram caption
Caption This - Create a smart caption for your photo in a second!
Sublight - Sublight is a website that allows you to download subtitles in several languages for movies and television.
Quik by GoPro - Easiest way to create awesome videos