stone call vs SoundLevel Pro

Stone Call is a managed voice, video, and messaging service for small teams, built around a Swiss Destroy design language: stark typography, monospaced rhythm, and the data laid bare. Sign up, sign in, and start calling — there is no PBX to configure, no carrier contract to sign. We run the infrastructure. CORE FEATURES Voice & Video Calls HD voice and video over WebRTC, optimized for LTE and Wi-Fi. Automatic ICE Restart handles network handovers without dropping the call. System Call Integration Incoming calls appear as native system call screens — same look as a regular phone call, lock-screen aware, audio routing handled by the OS. Messaging Send text, images, and files alongside calls. RCS-style message revocation. Real-time delivery with media stored on a hardened, CDN-fronted file backend. Linked Devices Pair phone, tablet, and work phone under one identity. Calls and messages reach every device you own. Manage and unpair sessions from settings. Notes Room A private chat with yourself, synchronized across every device you are paired on. Stash drafts, paste links, send files between your own phones. Contacts & Call History Local contact database. Inbound and outbound call records are auto-generated and searchable. Phone Numbers Lease a real phone number based on your location. Your number is restored automatically across reinstalls using a stable device identifier. Push Notifications VoIP push notifications ensure calls reach you even when the app is fully terminated. PRIVACY - App Tracking Transparency on iOS. - TLS-encrypted call signaling. - SRTP-encrypted media transport. - Account deletion built into settings. - Privacy policy and terms of service available inside the app, with multilingual support.

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.