DrillMirror

DrillMirror is a mobile + web AI practice coach that turns messy skill practice into tight, measurable reps. You record short attempts (speech, instrument riffs, sales pitch, language pronunciation, interview answers), and the app scores only a few high-signal metrics per skill, then prescribes the next 3 drills. It uses spaced repetition for micro-drills, but the core is deliberate practice: isolate one weakness, repeat, then retest. Users get a weekly “proof of progress” report with before/after clips and trend lines so motivation doesn’t rely on vibes. It’s realistic about limits: it won’t replace a human coach for advanced technique, but it can replace hours of unfocused practice and reduce the cost of getting competent. The app supports templates for common skills and custom rubrics for niche ones.