Spinal protection

[One-time purchase, lifetime use, no additional fees] Angle Meter is a professional angle measurement and recording tool, helping you monitor body posture anytime, anywhere. 【Core Features】 ◆ Real-time Angle Measurement — Based on iPhone high-precision sensors, captures tilt angles in real-time with precision up to 0.1°, intuitive measurement process with peak angle locking support. ◆ History Tracking — All measurement data automatically saved locally, supports trend viewing and historical details for long-term angle monitoring. ◆ Activity Reference Guide — Provides general activity reference information with detailed movement descriptions and precautions. ◆ Privacy Protection — 100% offline operation, all data stored only on your device, no upload, no sharing, no internet connection required, complete privacy protection. ◆ Multi-language Support — Supports Simplified Chinese and…