Disappearing Bedside Clock vs Frequency Generator

A bedside clock that keeps you in the dark—except when you want to know the time. The clock display disappears after an adjustable time interval, letting you (and the device) rest peacefully. Touch the screen to check the time, which will again disappear after the adjustable interval. On iPhones in portrait orientation, you don't have to touch the screen to see the time. Simply wave your hand in front of the screen to activate the iPhone's proximity detector and the time display! Or, on all devices, enable adaptive vibration sensing to activate the display with a touch to your nightstand or even a footstep on your floor. Optional brightness dimming is also provided, which lowers the screen's backlight brightness on LCD devices once the clock has disappeared to produce an even darker display and lower power consumption. (The backlight is dimmed as low as possible automatically, but it is not turned off. On iPhones in portrait orientation, holding your hand in front of phone's proximity sensor for a full second will turn off the backlight. ) If you have enabled "Hey Siri!" you can activate the time display with your voice. Simply say "Hey Siri! Goodbye." to see the time! Use Siri to enable Do Not Disturb mode and manage alarms. Embrace the darkness! Features: * Digital or analog, 12 or 24-hour time display options (2 & 3-finger long press toggles) * Swipe right or tap to display the time * Adjustable, automatic time-display fadeout * Swipe left to immediately darken the display * Double tap to toggle between automatic disappearance mode and always-on time display * Pan vertically with two fingers to adjust undimmed display brightness * Optional automatic backlight dimming * Select normal or thin display fonts (one-finger long press to toggle) * Customize the time-display color * Hide date option * No-touch activation > proximity detection on iPhones in portrait orientation > adaptive vibration sensing > voice activation using Siri The default vibration sensitivity setting is quite high, so you may want to decrease it slightly if ambient vibrations are triggering the display unintentionally. No ads, no in-app purchases, no nonsense.

Say goodbye to muffled audio and trapped liquid with Sound & Frequency Test, the ultimate audio companion for your iPhone. Whether you need to eject water from your device’s speakers, test your audio equipment's performance, tune an instrument, or explore the limits of human hearing, this app delivers studio-grade accuracy with a stunning, modern dark design. Our app utilizes a custom, manually-scheduled PCM buffer loop to generate pure sine-wave tones with sample-accurate precision. Enjoy seamless frequency sweeps without pops, clicks, or distortions. KEY FEATURES: 1. AUTOMATIC WATER EJECT & SPEAKER CLEANER Accidentally dropped your phone in water? The dedicated Water Eject mode uses a scientifically proven 165 Hz frequency to vibrate the speaker diaphragm, effectively expelling trapped water and restoring crystal-clear sound quality in just 30 seconds. 2. PRECISION TONE GENERATOR Produce pure sine waves across the full spectrum of human hearing, from a deep sub-bass 20 Hz to a high-pitched treble 22,000 Hz. Adjust the frequency smoothly using the logarithmic slider or precise manual controls to suit your audio needs. 3. REAL-TIME NOTE DETECTION Curious about what musical note you’re playing? As you adjust the frequency, the app automatically calculates and displays the corresponding musical note name and octave in real-time (e.g., A4, C0). 4. ONE-TAP SOUND PRESETS Instantly jump to standard reference frequencies: • Water Eject (165 Hz) — Vibrate and clear your speakers. • Bass Test (60 Hz) — Test subwoofers and low-end responses. • Mid Test (1,000 Hz) — Check mid-range audio clarity. • Treble Test (8,000 Hz) — Check high-frequency performance. • Concert A (440 Hz) — Classic standard tuning pitch for musicians. 5. AMPLITUDE & VOLUME CONTROLS Fine-tune the output intensity of the generated frequencies directly in the app. Combined with visual representations of the audio waves, you maintain full control over your acoustic experience. 6. SAFETY WARNING SYSTEM & USER EDUCATION High-frequency tones can be intense. We prioritize your hearing safety by incorporating an in-app safety guide and automatic volume warnings to prevent hearing damage. PRACTICAL USE CASES: • Speaker Restoration: Clean your phone's speaker grill after water exposure, dust accumulation, or lint blockages. • Audio Equipment Testing: Check the frequency response of headphones, earbuds, home studio monitors, subwoofers, and Bluetooth speakers. • Instrument Tuning: Use standard reference tones like Concert A (440 Hz) to tune guitars, violins, pianos, and other instruments. • Sound Projects & Experiments: Ideal for acoustics study, physics demonstrations, and sound-wave analysis. • Hearing Assessments: Explore your personal upper and lower hearing thresholds.