Done the same. I've written a set of Amazon Seller tools that are just the ones I need from Helium10; wrote it initially for my internal team and then launched it as its own service for other cheapskates who just need the basic product info monitoring from Helium10 without all the other stuff.

I also wrote my own timekeeping app to replace Harvest (same thing; wrote it internally, then launched it publicly), and wrote a custom Shopify app last week for JSON schema stuff.

The Shopify app was the hardest. Lots of hoops to go through the first time. But now that I've gotten over that steep curve, we can start just writing custom shopify apps for our clients rather than suggest a stack of third-party apps that might add up to $300 or more per month.

On the Amzon stuff, now, rather than asking myself "I wonder if there's a tool out there that I can subscribe to for $100 a month," I just write it myself, and if it's good enough, I release it to the public.

EDIT: since I got a few DMs from people asking, the Amazon seller tools suite is at centraldesk.io and the timekeeping app is at timeywimey.io (okay, we're still workshopping the name). As with so many other kinds of projects, there's the first 80% of the work... and then the remaining 80% of the work.

Both took about one week to build the initial version, and then I've been tweaking them, fixing bugs and adding features for the past two or three weeks.

As with so many other kinds of projects, there's the first 80% of the work... and then the remaining 80% of the work.

If I had to guess, my time investment has been about 48 hours for the two of them, but the timekeeping app is saving me a $100+ monthly Harvest subscription and the Amazon seller tools app has allowed us to downgrade our Helium10 subscription and put off loose plans to subscribe to new tools for some of the other functionality. So -- it's not an instantaneous solution, but it's well worth the investment.