空竹定速

A focused tool for tracking diabolo constant-speed spin duration. Built for dedicated practitioners who want to measure, compare, and improve their sustained rotation times with precision. — Precision timer with millisecond accuracy — Session history with search, calendar view, and card layout — Multi-technique tracking across 14 diabolo styles — Visual analytics: trend lines, radar charts, heatmaps — Personal bests, streaks, and achievement badges — Customizable goals for daily and weekly progress — Multi-step record entry with quick templates — Full offline operation, all data stays on device — Universal layout for iPhone and iPad Your practice deserves better than a stopwatch. Download and start logging.