DefaultVPN vs NoiseLens

Default VPN is a free open-source VPN client. It is not a ready-made VPN service. To use it, a VPN configuration in the form of a key is required. Default VPN does not collect or transmit personal data. All data entered by users is stored locally on the device.

NoiseLens turns your iPhone or iPad into a clean, visual sound level meter for everyday environments. Open the app, grant microphone access, tap Start, and watch the estimated noise level around you change in real time. Use NoiseLens at home, in the office, in cafes, near traffic, at events, or anywhere you want a quick sense of how loud the environment feels. KEY FEATURES Live dB Meter See an estimated sound level reading with large, readable numbers designed for quick checks. Real-Time Waveform Follow the sound visually with a smooth live chart and animated sound energy. Minimum, Average, and Peak Track min, average, and max values during each measurement session. Noise Categories Understand whether the environment is quiet, comfortable, busy, loud, or very loud. Session History Save measurements, compare places, and review previous sound sessions later. Privacy-First Audio Processing Audio is processed on your device. NoiseLens does not upload raw audio or require an account. Designed for iPhone and iPad A polished dark interface with bright acoustic visuals, readable charts, and smooth controls. IMPORTANT NoiseLens estimates sound levels using your device microphone. Results can vary depending on device model, microphone condition, case, distance from the sound source, environment, and calibration. NoiseLens is not a certified professional sound level meter and should not be used for legal, workplace safety, medical, or compliance measurements.