Hi! I use Followadder myself and I LOVE it. I've seen my account grow over 2,000 followers in the past 4-5 months.
I'm familiar with targeting based on hashtags and competitors in a niche. Followadder has helped me land several copywriting clients on my account @maxxsamone. As long as your IG bio is optimized, you can gain so much traffic to your links, get DM's that concern products/services, and build an organic following in your niche market.
I would love to help you set up your accounts! You'll be able to see a difference in your IG activity in less than a week.