I made a small app, forgot about it for 2 months, then came back to see 31% 30-day retention and all 5-star reviews

This summer, while working in public places, I found myself getting distracted by people's conversations and other noise. I tried many ambient noise apps and white noise YouTube videos, but didn't like them very much, so I built my own tiny app that plays brown noise (a smoother version of white noise). I ended up using it daily, and decided to publish it on App Store because it seemed to solve a real problem.

Previously I always got stuck in the loop of perfecting and not shipping, so this time I told myself I'll just wing it. I made up the simplest possible name – Brown Noise, drew screenshots in Keynote, and released the app within a couple of days. I made it free because people probably wouldn't download a paid app with no reviews. I also published it on Product Hunt (https://www.producthunt.com/posts/brown-noise), but only got 70 upvotes.

Then I got busy and forgot about it.

Fast forward 2 months, I was randomly browsing my analytics and decided to check Brown Noise, and saw that 2 months later (!!) people were still using it!

Here's the retention over the entire time:

• Day 1 or later: 60.47%
• Day 3 or later: 51.59%
• Day 7 or later: 45.83%
• Day 14 or later: 35.51%
• Day 30 or later: 31.07%
• Day 45 or later: 28.71%

I also got 10 reviews, all of them 5-star. You can see seven of them (US) here: https://apps.apple.com/app/brown-noise/id1519712394.

I'm so happy I created something that is useful and solves a real problem! I don't have many users yet, but early metrics look great. Really excited to now market and improve the app.

Thanks for reading!