Ask HN: How did you make your product more popular?

I've created a pretty useful app that has received a very high positive feedback from users. Its landing page[0] currently attracts about 100 visits per day and has a good conversion rate. Most of this traffic comes from word-of-mouth and my occasional posts on Reddit and Twitter. I am confident that the app could benefit more people if only they knew about it. However, I have no idea how to improve my traffic any further. In the past, posting on HN and Reddit has helped me bring in new users and customers. However, I know that I cannot always rely on this without risking the perception of spamming. I have also experimented with search ads, but people usually don't search for apps to help them with eye problem and hence it wasn't very successful. I plan to start a blog soon, though I am aware that it's a long game and it might take me years to see any benefits. I would be grateful to hear how you have made your product popular. Are there any strategies I am overlooking, or perhaps unconventional methods that could attract more attention to my product? [0]: https://lookaway.app