I built a mental math trainer. Now I'm struggling with the hardest part: finding users.

I've been working on a small iOS app called **MathStar**.

The original idea wasn't to build "yet another math app." I wanted to create something people would actually use every day.

The app currently targets two very different audiences:

* **Adults** — as a 5–10 minute mental warm-up before work. Instead of opening social media first thing in the morning, solve a few mental math exercises, improve focus, and switch your brain into "thinking mode."
* **Kids** — to practice arithmetic, strengthen mental calculation, and become more confident with numbers through daily repetition.

The app is intentionally simple: no videos, no lessons, no endless content. Just generated mental math exercises, progress tracking, streaks, statistics, and a clean interface that encourages a daily habit.

Building the app has actually been the easier part.

The challenge I'm facing now is positioning and distribution.

Should I market it as:

* a brain-training app?
* a mental math trainer?
* a productivity tool?
* something for parents?
* or something for students?

I'm also curious how other indie developers found their first few hundred users for niche educational or habit-building apps.

If you've built something similar, I'd really appreciate hearing:

* what acquisition channels worked,
* what completely failed,
* whether your initial target audience turned out to be the right one,
* and what you'd do differently if you were starting again.

For anyone curious, here's the app:
[MathStar on the App Store](https://apps.apple.com/ua/app/mathstar-practice/id6764249586?utm\_source=chatgpt.com)

I'll also attach a few screenshots for context.

Thanks! I'd genuinely appreciate any feedback—even if it's brutally honest.