FreshBooks Menubar Timer Concept

FreshBooks needs a new app for the Mac!

I love FreshBooks for managing projects and invoicing clients, but what they're missing is a timer app built for Mac. Their iOS app is great, but the desktop is still where work happens!

Here's what I'd love to see:
• dark & light themes
• optional monochrome or color menubar icon
• customizable shortcut keys

Any fellow FreshBooks users? What would you want to see in a new app?