Handwriting Grid Math Training vs VoxApp

This is a grid math training app with handwriting input. Please use it for mental exercise. How to use: You can choose addition, subtraction, or multiplication. Enter the answer by handwriting, and if it’s correct, it will automatically move to the next grid. In the settings tab, you can set the grid size and whether you are right-handed or left-handed. It’s easier to write if you use an Apple Pencil on an iPad. The app is free to use for the first 3 days after installation. After the free trial period ends, the app will be locked. However, you can continue to use it by unlocking it with a purchase. Requires iOS 17.2 or later.

IMPORTANT SAFETY NOTICE: VoxApp is intended SOLELY for educational and research purposes. Results should NOT be used for clinical diagnosis without a complete professional voice assessment by a qualified healthcare provider. This app is a supplementary tool for voice documentation and monitoring by trained professionals. VoxApp is the most comprehensive voice acoustic analysis app for vocal health professionals and researchers. Capture standardized recordings and obtain objective acoustic indices (AVQI, ABI, F0) for clinical documentation, research, and longitudinal voice monitoring. KEY FEATURES: • Standardized recording protocol (sustained vowel + connected speech) • Automatic AVQI (Acoustic Voice Quality Index) calculation • Automatic ABI (Acoustic Breathiness Index) calculation • Fundamental frequency (F0) analysis with visual contour • Report export in PNG and PDF formats • Complete evaluation history • Multilingual interface (Portuguese, English, Spanish, German, Italian) IDEAL FOR: • Speech-language pathology students and professionals • Otolaryngologists and voice clinics • Speech therapy researchers • Voice science laboratories • Voice professionals (singers, teachers, actors) working with their SLP SUBSCRIPTION PLANS: • Basic: Essential acoustic analysis features (3 free uses, then subscription required) • Professional: Advanced features + unlimited analyses + priority support + unlimited exports IMPORTANT TECHNICAL NOTES: • Requires internet connection for analysis (cloud-based Praat processing) • AVQI/ABI cutoff values were validated with laboratory-grade microphones, not phone microphones • Phone recordings use automatic gain control (AGC/AFC) and are more affected by background noise • Results must be interpreted with caution and in conjunction with complete clinical assessment • Best performance in quiet environment • Maintain consistent recording conditions for longitudinal monitoring PRIVACY & SECURITY: • Your data is encrypted and stored securely • GDPR compliant and health data regulations compliant • Voice recordings processed on secure servers • No data shared with third parties WHY VOXAPP? VoxApp brings professional-grade acoustic analysis tools directly to your smartphone, based on internationally validated protocols and acoustic indices used in clinical research worldwide. Designed for educational use and professional voice documentation. LEGAL & SUPPORT: Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.fonotechacademy.com/voxapp-privacy Support: fonotechacademy@gmail.com Download VoxApp now and enhance your voice analysis workflow for educational and research purposes! --- Developed by Fonotech Academy