Do the filters I create on my iphone sync to my ipad and online?
The filter function should sync across devices, however it's not available on the web right now. We will add it in future updates, though, but for now it's a mobile-only feature.
When will filters be available online? After the IOS updates I've found this really useful but a slowdown when using the web app. Todoist, your Karma is going down (J/K)
Other than that, keep up the great work!
Yes, we'll have filters available on the web-app soon, we're currently improving the UI to make it possible :)