My favorite todo app is ticktick. I had tested everything that exists for the last 15 years. I found ticktick about 5 years ago. The developing team is from China (I think). I started using it when it was written in broken English and had terrible UI. But something about how they did it just works for me. I am happy they have stuck with it and tried to reach English-speaking markets because today it is a beautiful app with a unique approach that is a joy to use.
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