Hi HN,<p>a while ago I discovered a problem with problem with personal productivity tools: Every time you find a tool that works well in one regard (say, habit tracking), you neglect your previously working systems (say, your to do list system).<p>So I set about to build a system which unifies all the different aspects of personal productivity. Everything is represented in cards (like flash cards) which are defined in Markdown. The following types of cards exist:<p>* <i>Learning</i>: Classic front/back prompts to memorize things. Think "What is the capital of Argentina?" on the front and "Buenos Aires" on the back. Works with a spaced repetition algorithm so time between prompts is optimized.<p>* <i>Habits</i>: Recurring actions you want to do - you can set the frequency individually. For example "Stand up and walk around your room" every two hours.<p>* <i>Checks</i>: Recurring prompts, similar to habits, but always questions referring to the past. For example a daily "Did you drink enough today?" prompt<p>* <i>To do</i>: One time actions that are deleted upon completion.<p>* <i>Reading List</i>: Used for books, articles, talks etc. There are always a limited number of reading list items active, which will prompt you to read a page a day until you are done with the given book.<p>* <i>Other</i>: Everything else - interesting websites, quotes, art or even memes that you will occasionally see.<p>The idea is that there is a single queue for all types of cards, only ever showing you one item that's due next - whether habit, learning prompt or a random note. This prevents choice fatigue, the dread of lengthy to-do lists and the boredom of endless dry learning prompts.<p>I've been using the app successfully for myself for quite some time now but would love external feedback. You can check it out at https://kaado.io. It's currently completely free (and in fairly early stage development). Simple email signup is needed but you won't get any unprompted mails.<p>Apart from that I would love your takes and ideas regarding personal productivity and what works for you.