Wunderlist For Productivity
Wunderlist will help you get your professional and personal life in order, helping you create to-do lists for vacations, stay on track with action items for work projects, and even share your grocery and chore lists with your partner. It allows for multiple different folders — letting you write to-do lists for many different plans — and its shining feature is its collaborative option. Whether it's a movie marathon list or a work project, if you share your list with someone they can write notes and messages under it, helping you stay on top of its progress. 

Wunderlist for Android and iOS.