MapPinNote vs SoundLevel Pro

User can add, edit and delete a pin in the map. Also user can turn on local push notification to remind user. ALL user's map pins information are stored in the app ONLY and NOT upload to our server / cloud service.

SoundLevel Pro turns your phone into a real-time decibel (dB) sound level meter. Point it at whatever you want to measure and watch the loudness around you on a big, color-coded gauge. MEASURE IN REAL TIME • Large analog-style meter with a live dB number • Color zones at a glance: green (quiet), amber (moderate), orange (loud), red (dangerous) • Peak, average and minimum readings • Live scrolling chart of recent readings NOISE ALERT • Set a threshold (e.g. 85 dB) and get a visual + haptic warning when it is exceeded • Great for a baby's bedroom, an office, a workshop or your neighborhood HISTORY • Stop a measurement to save its summary (peak / average / min and duration) • Browse and manage past sessions anytime dB REFERENCE GUIDE • A handy table of everyday sound levels — whisper, conversation, traffic, concert and more MADE FOR EVERYONE • Light & dark themes with multiple accent colors • English and Japanese • Calibration offset to match a reference meter • Keep the screen on while measuring PRIVACY FIRST • Works fully offline. The microphone is used only to measure loudness — audio is never recorded, saved or sent anywhere. No account, no cloud, no tracking. Note: readings are approximate and depend on your device's microphone. SoundLevel Pro is intended for general awareness, not for professional or regulatory measurements. Free, supported by ads.