After a brief search, because I like the functionality and dislike the price point I found this: https://apps.apple.com/us/app/id1532419400 https://apps.apple.c

After a brief search, because I like the functionality and dislike the price point I found this: https://apps.apple.com/us/app/id1532419400 https://apps.apple.com/us/app/id1532419400 Open source, free (both as in beer and freedom), small memory footprint. Previous discussion here: https://news.ycombinator.com/item?id=23991111 https://news.ycombinator.com/item?id=23991111