pip3 installation

$ pip3 install bpytop --upgrade

Ubuntu snap installation

$ sudo snap install bpytop

macOS using homebrew

% brew install python3 git
% python3 -m pip install psutil
% brew install hacker1024/hacker1024/coretemp
% brew install osx-cpu-temp
% brew install bpytop

However, you need to grant additional permissions too: 

sudo snap connect bpytop:mount-observe
sudo snap connect bpytop:network-control
sudo snap connect bpytop:hardware-observe
sudo snap connect bpytop:system-observe
sudo snap connect bpytop:process-control
sudo snap connect bpytop:physical-memory-observe