Recs.
Updated
SpecsUpdate
Pros
Pro Completely free, ad-free, with unlimited devices
Zoho (the company behind Notebook) has been providing free, advertisement-free, productivity applications for over a decade, and this one is no different.
Pro Easy to use
If you've ever used Evernote, then you know it has lot's of menus and that doing simple things requires lots of taps. Notebook is designed to be more functional, and lets you take and access notes quickly.
Pro Pre-built checklist and audio notes
Rather than create a checklist within a text note, Notebook has a pre-built checklist card, which makes creating them really easy. Plus the items you check off move to the bottom of the note. Audio notes work the same way. Rather than treat audio notes like attachments (as Evernote does), Notebook has a pre-built audio note which is really nice, very similar to Evernote in that fashion, which makes it a good alternative.
Cons
Con Available on limited platforms
Currently there is no web app or Windows version available.
They are working on both, but there is no set release date.