Someone will make $10M+ in 2025 just by rebuilding existing mobile apps. Here's the exact playbook they'll use (save this): 1) Find apps people already pay for but hate using I use Sensor Tower to find apps making $50-200k MRR in stable categories - things like productivity tools, utilities, or niche professional apps. The key is filtering for consistent revenue growth but dated interfaces. I'm looking specifically for apps charging $10-30 monthly for basic utilities that maintain steady users despite minimal updates. The sweet spot is finding tools with sub-4 star ratings but strong retention - that's the signal that users need it badly enough to keep paying despite hating the experience. I pay special attention to revenue per download rather than total revenue - this shows me whether users stick around and pay month after month. Most people miss this, but the real opportunities are often in the boring categories where small but loyal user bases quietly pay monthly for tools that just work. 2) Look for obvious missing features Search for single dev apps doing $100k+ MRR with ancient UIs. Find tools where 50%+ revenue comes from one basic feature. Target apps still charging for features that should be free. Look for apps with steady revenue but no updates in 6+ months. The best opportunities are utilities people use daily but hate using. I also like to find apps and just localize them to certain geos. “BuT tHaTs sUcH SmAlL tHiNkInG.” Wealthfront is the Robinhood of Canada. Does ~$200M in revenue with $50B under management. You can do well by being X for Y. 3) Spot the AI opportunities Find apps still doing manual data entry or file processing. Look for any utility with "upload and wait" workflows. Target apps where users repeatedly paste the same type of data. Find apps charging premium for basic automation that AI could do instantly. 4) Find the distribution plays See if the niche TikTok creators are sharing it. Scour TikTok shop. Start reaching out. Pay ~5$ per CPM. Search for utilities that creators use but never share. Look for tools solving shareable problems privately. The secret: Find apps with high usage in specific niches (photographers, designers, writers) but zero presence on their platforms. 5) Rebuild and scale Launch with one core feature done right. Add AI to automate the tedious parts. Build sharing features from day one. Price based on value, not market. Key insight: Don't rebuild everything - just fix the one thing users hate most. 6) Building the holdco I'm seeing more founders building app portfolios instead of single products. Each starts by finding an app people pay for despite hating it. Use cashflow to buy more apps. Use shared infra. Add AI. Improve UX. Build distribution moat. Ya baby! We’re cruising. The pattern is clear, find things people already pay for, make them 10x better with AI, add distribution, repeat. SensorTower helps. Im not affiliated, just I like unfair advantages and tools that get my creative juices flowing. If this was helpful, let me know. I live to serve. I am rooting for you.