logSPL vs YAT (Yet Another Timer) Lite

This App is a full featured sound level meter, designed by a signal processing expert. It is iPhone/iPod/iPad compatible and adapts itself to the actual screen resolutions ("HD", "retina"). It consists in two parts: half top for basic features, half bottom for advanced ones (L95, %D, ...). Half top was thus designed to be extremely easy to use. Only two settings are requested: * select 'fast' or 'slow' update rate, which corresponds to 2 different integration periods * select the type of weighting: A or C or Z (Z meaning roughly: no filtering) These settings are saved when exiting the App. Some tips for weighting: * select A to evaluate the feeling of a person against a noise * select Z to balance an audio system Supports upside-down orientation. The min and max values are monitored and displayed in green in the upper view. An average value (Leq, LAeq, ...) is computed on top of this: the green triangle. Take care that this latter corresponds to the logarithm of the average power and not to the average of logarithm values, which is completely different. Integration time for this average value is: all time since start-up of the App or last reset. To reset these extreme and average values, touch the text named RESET. Bottom view is used to display an historical curve. A grid is visible, with lines every 10dB vertical and 10s horizontal. Half bottom now: * a real-time histogram is displayed on left side * it can compute L%: L95, L50, ... * it can make some dosemetering: for this you need to set threshold, criterion and exchange values. This is for advanced users due to the complexity of underlying concepts As for all sound-meter (at any price, hardware or software), you should calibrate it against a reference in order to achieve best accuracy. For this go to Mic. tab to add or remove a fixed offset to the measured values. Any question ? Click on the Facebook icon !

YAT Free is a timer app designed to make it fast and easy to create customized timed routines for any purpose. YAT Free has a clean, intuitive, and generalized design, making it a versitile app for multiple uses. Create timed routines for exercise, yoga, cooking, presentations, massage, art modelling, meditation, gaming - whatever your needs happen to be. Routines consist of any number of steps, each of which includes any number of repetitions. "Break" steps divide a routine into sections, where each section is started manually by pressing the "Start" button when you are ready. YAT Free includes a stopwatch with a novel "Repeated Trials Mode" option, which is designed for timing something multiple times and automatically calculating the average (for a more accurate or representative result). For further utility, YAT Free also includes a clock with large digits (for easy reading at a distance) and an optional ticking sound. YAT Free Features: - can (optionally) read step titles aloud at the beginning of each step - configurable time for transitioning between steps - choose color and fonts to suit your taste - 42 alert sounds to choose from - multiple vibration patterns to choose from - light and dark themes, to fit the room lighting - runs on iPhone, iPad, and iPod touch (iOS 9.0+) - portrait and landscape support A paid version of YAT is also available, if you would prefer an ad-free experience or you wish to support the developer..