If you are a heavy user of Discord or Slack, SchildiChat might be the best Matrix download app for you. It is a fork of Element, meaning it takes the core of Element and optimizes it for power users.
How does it stack up against established competitors? Here is a feature comparison: matrix download app
The Element app is free for everyone, and can be self-hosted or hosted on Matrix.org at no cost. What is Matrix software used for? | Linagora If you are a heavy user of Discord