First Grade Math Drill vs XSpecApp

This is a simple math drill but with multiple reward animations. There is no sound. Only button clicks are required for answers. The app starts with addition and subtraction, then progresses to missing addend, sequences, comparing numbers, base 10 blocks, fractions, 2D geometrical shapes, telling time, fractions, bar charts, and measurement. The child can view the number of correct answers, shown with an emoji for each one. If the child enters an incorrect answer, a hint image appears. After 2 incorrect answers, incorrect answer buttons become disabled on each further incorrect answer until only one is left. On a settings page (for adults but with no restrictions) children may be added by name and assigned a level 1 - 3. The name, level and the number of correct answers are stored on your device for future sessions. The app is free, and there are no ads. No Wi-Fi or cell signal is required.

XSpecApp displays EDXRF spectra providing the following capabilities: * Manual identification of elements * ROI (integrals) for identified peaks * Annotations on spectrum * Printing of spectrum with calculated ROIs * Saving and Loading of spectrum, with annotations and element information * NEW: Acquire spectra using an Amptek DP5 digital pulse processor. Supported interfaces are USB, Serial, and XSpecConnect (Wi-Fi and Bluetooth) . Please visit www.xrfconsulting.com for details on XSpecConnect.