logSPL vs HAM QuickLog

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 !

Log contacts in seconds, not minutes. HAM QuickLog is the complete HAM radio app combining lightning-fast logging with 11 built-in tools, perfect for casual operators, POTA activators, contesters and SWLs. Why operators choose HAM QuickLog: * Purpose-built templates: HF, SWL, Contest, POTA, minimal and Full templates show only the fields you need * Lightning-fast entry: Auto-fill some fields, field copying, and smart defaults minimize typing * Works anywhere: Includes several online and 6 fully offline tools (Grid Calculator, Azimuth Calculator, Q-Codes, UTC Clock, ITU Prefixes, My Grid & Location) * Zero paper in the field: Log directly on your iPhone or iPad, no transcribing later Home Screen Widget: See your latest QSOs and log stats at a glance — right from your Home Screen. No need to open the app. PDF creation: Generate a clean, printable PDF of your log. Print it directly from the app or share it — perfect for club submissions, personal archives or Field Day documentation. Built-in HAM Tools: * DX Cluster * Contest Calendar * Grid & Azimuth Calculators * QRZ & HamQTH Browsers * SOTA Cluster * Q-Codes Reference * ITU Callsign Prefixes * UTC Clock * And more Professional features: * Full ADIF import/export * Automatic duplicate checking (Contest mode) * One-tap callsign lookup (QRZ & HamQTH) * Dedicated SWL template * Works on iPhone and iPad Perfect for: * Quick portable logging on iPhone or iPad * POTA activators logging from parks * Contest operators needing speed * Field Day operations * SWLs tracking what they hear * Home station everyday logging Whether you're activating a park, working a contest, or enjoying casual QSOs, HAM QuickLog keeps you on the air - not buried in paperwork.