What's new:
1. Timer core rebuilt: fixed practice time being lost when pausing after backgrounding, the timer freezing after resume, and records saving as 0 — your practice time is never swallowed again.
2. Reliable countdown alerts: the finish chime now rings on the lock screen and in the background, using your selected ringtone.
3. Faster statistics: data queries are fully optimized.
4. More stable iCloud sync across devices.