Tally
Tally is a counting app for GNOME on Linux.
With Tally, you can count everything you want. The app lets you name each of your counters and optionally assign them a colour, reordering them how you want so that they may be categorized.
Special care has been taken to ensure that the displayed colours meet standard contrast criteria. You’ll be able to tell a counter’s colour at just a glance without needing to struggle with reading the name and value of any counter you have.
Tally also provides you with the ability to filter the list of counters by their name and which colour they’ve been given, so you can focus only on those currently relevant to you.
Tally can be installed on any Linux system from Flathub.