I guess it's really safe cause it's open source, you can make notes on your habits but don't really do that. Its simple. Really fast. Haven't found a way to connect it to notion. In general it's a great app to track you habits. Does its job. Not more, not less.
Habitica - Habitica is a free habit building and productivity application.
Miles And Mia - Children's book featuring diverse characters
HabitBull - HabitBull
Yeah? Says Who? - My mom has been working on this new children's book about being yourself for a while and now seems like a perfect time for it!An inspiring story about encouraging kids to be themselves!
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
The WALLOBOOKS Project - A magical storybook anybody can write, every kid can read