Habit Hub
“The HabitHub” is a powerful app that can be used to track habits, accomplish your goals and finally rewire yourself. It provides features to manage streaks, calendars, reminders, notes etc.
Link: https://www.thehabithub.com/
Download: https://play.google.com/store/apps/details?id=com.rstudioz.habits
Loop Habit
Keep your life on track. With daily reminders, beautiful charts and insightful statistics, Loop Habit Tracker™ helps you create and maintain good long-term habits. Completely free and open source (GPLv3).
Link: https://loophabits.org
Download: https://play.google.com/store/apps/details?id=org.isoron.uhabits
Money Manager
Link: https://www.realbyteapps.com/
Download: https://play.google.com/store/apps/details?id=com.realbyteapps.moneymanagerfree
Trello
Trello is the ultimate project management tool. Start up a board in seconds, automate tedious tasks, and collaborate anywhere, even on mobile.
Link: https://trello.com/en
Download: https://play.google.com/store/apps/details?id=com.trello
Micro Habits
Download: https://play.google.com/store/apps/details?id=com.infielight.microhabits
Google Keep
Google Keep is a note-taking service included as part of the free, web-based Google Docs Editors suite offered by Google. The service also includes: Google Docs, Google Sheets, Google Slides, Google Drawings, Google Forms and Google Sites. Google Keep is available as a web application as well as mobile app for Android and iOS. The app offers a variety of tools for taking notes, including texts, lists, images, and audio.
Link: https://keep.google.com
Download: https://play.google.com/store/apps/details?id=com.google.android.keep
Wrike
Wrike is a digital work management tool that lets users track and coordinate projects, combining a simple user experience and interface with enough depth for power users.
Link: https://www.wrike.com
Download: https://play.google.com/store/apps/details?id=com.wrike