I made a tool for switching between recently visited tabs – just like how you switch between recently used apps on macOS with Command+Tab. It's like if Spotlight and App Switcher had a baby.

I thought it was a great tool, so I spent a few months building it. I’ve gotten around 25 paid users and about $100 in sales – with no paid ads.

Now I’m thinking about trying paid marketing. But since this app is extremely niche (at least in my subjective opinion), I’m not sure if it’s worth it.

What do you think? Should I invest in marketing, or move on and build a less niche app?