1. Clear – Tasks & To-Do List
If you're searching for an easy to use, fast and beautiful Android and iPhone/iPad to-do app to simplify your life, you should use this app. Clear is known for its simplicity and elegance, it can be used for making to-do lists, quick notes lists, shopping lists and more on your iPhone and iPad. This is a powerful and simple to use universal to do app for iPhone and Android that is actually a mixture of to-do app and reminder app. It has a very elegant and clean UI and some cool features like- location based alerts, sync with other apps, passcode protection, copy/paste multiple items, to-do stream, Pocket List Cloud collaboration, Facebook and Twitter integration and more. A must-have app to keep your life organized.
2. Due - Reminders & Timers
Due is a very popular and useful to-do and reminder app for Android, iPhone, iPad and Apple Watch. Features like- multiple task alerts, repetitive reminders, built-in syncing ( Dropbox & iCloud ), adding notes, shared lists and more make this beautiful app very useful, too. If you're searching for a beautiful+useful+powerful to-do app for your iPhone and Android, this app is for you.
3. Toodledo - To Do List
Another popular and effective to-to app for iOS & Android users. This is a feature rich Android, iOS to-do app that lets you make, manage, search, sync, share and backup your to-do lists. You can add tasks by voice and import from the Reminder app and also protect your to-do lists with a passcode.
4. Todokit - Todo List, Task Manager, Daily Planner
If you are looking for a useful, reliable and solid to do app for your iPhone and Android, you can try Todokit. This is a feature rich and beautiful To Do and task manager app for your iOS and Android devices that comes with a very easy to use user interface, you can reorder tasks by just dragging & dropping.
5. 2Do: Tasks Done in Style
If you're looking for a full-featured and powerful to do app for your Android, iPhone or iPad, use 2Do. It comes with all the features you expect from an all-in-one universal and useful to-do app. Although 2Do has so many features that make it a full featured and very powerful iOS & Android to-do apps, but some of them are unique such as- sharing support (Reminders, Toodledo, Custom iCal Server, Yahoo! Calendar Tasks, Dropbox and more), separate password lock for individual lists, location based tasks created via Siri, backup/restore, voice notes, shared lists, batch operations, dynamic lists and more. The perfect to-do app for iPhone and Android that makes your life simple.
6. Wunderlist – To-Do & Task List
Wunderlist is a great Android and iOS to-do app that lets you make and manage your to do lists on your iPhone and iPad or Android and share them with your friends and family. It is very simple to use but has all the features such as- sync, collaboration, notes, reminder etc. Wunderlist is a very useful Android and iPhone/iPad to-to app helps you to get organized.