Since Launch in Sep 2020 reaching 4500 users
by Martin3000+ Active users still having Extension installed on their Chrome Browser
Learnings:
Building a tool that has dependencies on other tools will force you to adapt constantly or you face a risk of failure.
SEO will kick in but it takes time and requires putting more oil on the fire. If you don't have time to do proper keyword research and write killer content, it can be tough.
Content distribution (social media, email newsletters, ...) will help, but you need to automate it as much as possible if you don't have a marketing leader in the house. The bigger the team behind the operation the bigger the effect. Solo founders can struggle if not being heavily supported and creative online.
Chrome extension will bring organic leads in the long run. Just make sure you keep the extension up to date and keep improving and upgrading. Keyword optimization in the description might help.
Side gigs are difficult to run if you have a full-time job. Seriously thinking of selling.
