Best skill tracking app for indie hackers

There are roughly 40-60 apps claiming to track skills or progress, but fewer than 10 genuinely target indie hackers and makers. Most existing solutions are either overly complex project management tools (Asana, Monday.com) that bury skill tracking, or generic habit trackers (Streaks, Done) that don't understand technical growth. The real pain point is that indie hackers accumulate technical knowledge across multiple projects but have no single place to surface what they've actually learned—they can't easily see patterns in their growth, quantify progress, or showcase skills to potential collaborators or clients. The gap exists because most skill-tracking incumbents optimize for corporate training departments or individual wellness, not for the unique workflow of someone shipping three side projects while freelancing. A new entrant should focus on: (1) project-scoped skill capture—tie learning directly to what you shipped, not abstract goals, (2) portfolio integration—make it trivial to export verified skills as proof for clients or job opportunities, (3) community validation—let other makers vouch for or recognize your skills, and (4) minimal friction—it must take 10 seconds to log a new skill or you'll abandon it by week two.