Secret Folder vs Black Audio Tool

Hide your photos and videos in a secret folder protected with password. - Import content from your device's camera roll. - Take a picture or capture a video, it's PRIVATE. - Create and manage your albums. - Decoy password: setup some fake photos as a second defense. - Export content to your phone - Create secret notes for things to remember like link, text or contact. - Disguise your app as a calculator Enjoy watching your videos with full privacy and security.

Black Audio Tool – B.A.T. Black Audio Tool (B.A.T.) is a powerful and versatile sound-generation app for anyone who enjoys exploring audio. Whether you are an audiophile, sound designer, musician, engineer, or simply curious about the physics of sound, B.A.T. turns your device into a compact laboratory for tone creation, noise shaping, and experimental listening. Create and control a wide range of sounds with precision. Generate classic waveforms such as sine, square, sawtooth, and triangle, then fine-tune them in real time with responsive controls for frequency, tuning, fine tuning, amplitude, and wet/dry mix. B.A.T. goes beyond standard tone generation. Explore interference, layered signal combinations, and a rich collection of noise colors, including white, pink, brown, blue, violet, green, and black noise for everything from soft ambience to unpredictable textures and randomized bursts. To shape your sound even further, B.A.T. includes built-in audio effects such as reverb and distortion, with the option to combine them for more complex and aggressive sonic results. The interface is designed for fast experimentation, precise adjustment, and smooth real-time control. From clean reference tones to abstract soundscapes, from audible frequencies to infra sonic and ultra sonic ranges, B.A.T. is built for discovery, testing, and creative play. Key Features: * Precise waveform generation * Sine, square, sawtooth, and triangle waves * Interference and overlay sound generation * Multiple noise colors, including black noise * Reverb, distortion, and mixed effects * Infra sonic and ultra sonic tone modes * Real-time parameter control * Audio recording to file * AirPlay support Private by Design: * No ads * No in-app purchases * No trackers * No data collection B.A.T. is a focused utility app made for pure sound experimentation — clean, direct, and fully yours.