I had almost given up on it... and now:
I have to say that I've always had problems with ToDo apps. Either the apps are so cumbersome that it's easier and faster for me to just write everything down on paper, or the apps are sluggish, and when I finally have a somewhat performant app, I can't add notes, I have to laboriously transfer them to my calendar, possibly even to my various calendars (private and professional)... I've never lasted more than two weeks with ToDo apps and always fell back on good old paper and note chaos. And that's despite the fact that I basically do everything digitally.
And then... I saw ByDesign here on AppSumo. First thought "Ok, but should I really try again? I know myself"... but then I saw the notes function, that I can manage multiple calendars (including multiple Outlook calendars) with ByDesign, and so I decided to give it a try after all. And that was a real awakening, because:
After a very short time I basically understood everything about how it works, the app is extremely fast and handy (whether in the browser, as a desktop app or as an Android app), I can, for example, create a ToDo lightning-fast and with a little drag it's already in the calendar (Outlook itself is actually very cumbersome, with ByDesign it's a matter of seconds), I can just make a little note, also gladly a detailed note with Pages (and yesss! also quickly export to my beloved Markdown), share my note... simply absolutely amazing.
I really couldn't believe anymore that I would find such an app that's easy for me to use and where I even enjoy working with it - now I've found it with ByDesign. There are still some little bugs in it (like with any software), but they get fixed lightning-fast. A big THANK YOU to the developer team for this app, especially to Arthur, who always responds lightning-fast, is super friendly and always helpful - simply awesome!
Although I've only been using the app for a few days now, I can already say that ByDesign is definitely one of my best purchases ever here... and I've bought a lot, as you can see in my profile. I actually wanted to slowly hold back on software purchases, but here it would have been a huge mistake if I had let this app pass me by.
Once again a huge thanks to the ByDesign team for solving a problem I've been carrying around for years, and my appreciation for the extremely well thought-out app! :) I'm also recommending it to my colleagues and acquaintances ;)
What would be the cherry on top: If you could make handwritten notes in addition to the regular Pages or have a simple whiteboard. I have a tablet with a stylus and also a graphics tablet. The problem would then be that AppSumo would have to make it possible to give 6 stars ;)

Chirali_ByDesign
Jun 26, 2025Hi Lars! this message truly means a lot — thank you for taking the time to share it so thoughtfully.
Hearing that ByDesign helped you break free from the cycle of frustration with to-do apps and finally enjoy planning and organizing… that’s honestly the highest compliment we could hope for. We built this for people like us — who’ve tried everything, felt stuck, and just wanted something that works without the overwhelm.
We're so glad you gave it that one more try and found it worth it. The note about how fast and smooth it felt, and even that you’re already recommending it to others - we don’t take that lightly at all.
We’ve got handwritten notes and whiteboard-style features on our long-term vision board too, and this just makes us even more excited to get there.
Thank you again for your kind words and for supporting what we’re building. You’ve made our whole team’s day 💜