I was planning to post about it yesterday when it happened but I forgot (so I'm at 667 days now), I only got a screenshot of it on my phone.. I wonder when they'll add more achievement tiers haha :') (so far I managed to never miss a day by doing it first thing in the morning on my phone after I turn off the alarm clock, I often visit subeta in my phone's browser anyway so it's easy to remember that way for me)