There even is a web app based on it <a href="http:&#x2F;&#x2F;dontbreakthechain.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;dontbreakthechain.com&#x2F;</a> which I try to improve right now with <a href="https:&#x2F;&#x2F;markmyday.net" rel="nofollow">https:&#x2F;&#x2F;markmyday.net</a><p>The latter doesn&#x27;t require an account, lets you log some additional data and is of course absolute beta.  
I really didn&#x27;t plan to publish it yet, but I haven&#x27;t done anything else to reach my goal today.