Doo for Mac - The popular iOS to-do app, now on Mac

Do I have to buy both the Mac app and the iOS app separately in order for it to work across devices?

@Mike Ciarlo This an awesome product. I bought this today morning for my mac book. And today is most productive day in recent times.. I wish you develop this for Android. And way to sync using google or fb login..

Hi Michael, Doo seems to be a very solid piece of hard work and very appealing, but I miss several crucial features that prevent me from using it: 1. Add attachments to entrys (photos from iOS camera roll, Dropbox/Google Drive etc. integration) 2. Categories (i.e. work, private, etc. or user-defined) for sorting the "stack" 3. Tagging and filtering features 4. Web version in order to access to-do's from anywhere (at work with the employer's PC, on travels etc.) Without these 4 functions, the app is not really useful for interactive and busy people with lots of different activities, projects and to-do's IMHO. Thanks for considering.