AppSupa

AppSupa is a one-person micro-SaaS that helps developers decide which mobile app to build. Instead of guessing, you start from apps people already pay for.

How it works:
1. Search an app you know, or open a niche.
2. See estimated monthly revenue and downloads for the top apps.
3. Read what users complain about in the leaders' reviews.
4. Check keyword demand and difficulty for each country's store.
5. Decide: build it, skip it, or build the better version.

What's inside: Opportunities (earning apps scored 0-100 on demand and how beatable the leaders are), keyword research, review insights, competitor tracking with daily keyword ranks, and niches, trends and language gaps.

Data: 5.9M App Store and Google Play apps, with revenue and download estimates for 590K+ of them in 40+ country stores. Figures are estimates, for comparing markets.

For indie iOS and Android developers, vibe coders, solo founders and small studios. $29/month or $290/year, with a 7-day full refund on your first payment.