Sonic Math vs PHVD

"Love Math More Than Ever!" A High-Speed Calculation Drill for Ages 4+ Master Addition, Subtraction, Multiplication, and Division with a fun, game-like experience! A simple and intuitive educational app designed to celebrate your child’s "I did it!" moments. 【App Features】 ● For Ages 4 to Teens: Four training modes tailored to different skill levels. ● Flexible Practice: Choose between the "Quick 10-Question" mode for a fast speed-run or the "100-Question Drill" for deep focus. ● Sharpen Your Speed: Real-time measurement and Rank displays (S to C) keep the motivation high! ● Free Play with Ads: Challenge all modes for free by watching short video ads. ● Ad-Free Option (In-App Purchase): Unlock the full version to remove ads and provide a more focused learning environment. Make math a favorite subject with daily "Sonic Math" training!

PHVD is an educational and reference tool for qualified neonatal healthcare professionals working with post-haemorrhagic ventricular dilatation in preterm infants. Enter serial cranial ultrasound measurements — ventricular index (VI) and anterior horn width (AHW) — alongside post-menstrual age. Plot measurement trends and view the published green, yellow and red risk framework adapted from El-Dib et al. (2020), with TOD excluded in this version. Clinical signs are included in the published criteria. FEATURES • VI and AHW trend graphs using the authors’ supplementary reference curve • Published risk criteria and management guidance for reference • On-device camera recognition of measurement numbers, with manual assignment and verification • Resistive Index recorded as supplementary information • Save an assessment image to Photos • English, French, Spanish and Portuguese interfaces • Local measurement history PHVD does not provide a diagnosis or an independent treatment recommendation. It does not replace clinical assessment, imaging review or your unit’s protocol. Every measurement and output must be independently verified by a qualified healthcare professional. PRIVACY Measurement history and image processing remain on your device. The app has no account, login or analytics and does not transmit your entered measurements. A disclaimer must be accepted before use. References to El-Dib et al. (2020) and Brouwer et al. (2012) are available in the app.