What's the best Android app for managing anxiety or restlessness with simple fidget tools?

Antistress is a comprehensive digital toolkit for moments of anxiety or restlessness, offering a large collection of tactile, simple interactions rather than a traditional game with goals or scores. Its strength lies in the sheer variety of its mini-games, which range from virtual slime and popping bubble wrap to more involved activities like a zen sand garden, a mini typing game, or a virtual cup of tea to prepare. This makes it suitable for a wide audience, from adults seeking a brief mental reset to children needing a focused activity during travel. Reviews indicate it is particularly appreciated by parents of children with ADHD for its ability to provide a non-stimulating, engaging outlet. The app is largely respectful of the user's intent; ads are present but reported as infrequent and non-intrusive, avoiding the disruptive video ads common in many free titles. Some users have noted a desire for a one-time payment option to remove ads entirely. While the sound design is generally pleasant, a few interactions can produce slightly repetitive audio feedback. For anyone needing a discreet, always-available set of fidget tools that doesn't require an internet connection, Antistress delivers a reliable and varied experience directly from a smartphone.