Generic productivity apps compete on features but fail to resonate with specialized workflows. A tool that layers game mechanics (streaks, XP, leaderboards) onto domain-specific tracking could stand out.
Focus first on one vertical like writers, indie hackers, or fitness trainers. Track their key metrics with unlockable achievements and visual progress.
Monetize through premium features or team plans for small studios/clinics where the manager could track group progress.
The MVP could be a simple habit tracker with 2-3 niche-specific metrics and basic gamification.
Risk: Niche may be too small, requiring rapid expansion to adjacent verticals.