OSpectrometer vs Sleep Friendly

Optical spectroscopy in the visible light spectrum is a commonly used tool in different fields such as health, manufacturing, art, and forensic research. OSpectrometer implements basic spectrometer functions using the built-in camera and screen without requiring external devices or programs. - Visible light spectrum is transformed and mapped to a function that generates RGB (Red Green Blue) color values - A specific light wavelength can be selected and used to illuminate a desired target (i.e., close to the screen) - The whole spectrum or a specific part of the spectrum can be selected and scanned - Front camera is used to sense the reflection from the target object - Consistent and repeatable reflection/absorption amplitude with respect to the color spectrum - The result can be saved and shared - Works offline, no need to connect to any network or internet Privacy-policy: https://software.nanorescenter.com/osprectrometer-privacy-policy Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Sleep Friendly is designed for one thing: to be the last alarm clock you ever need. Most alarm apps are cluttered with ads, aggressive upsells, and interfaces that light up your bedroom like a stadium when all you want to do is check the time. Sleep Friendly is different. A clock built for the nightstand The clock screen dims automatically after 45 seconds, keeping your room dark while you sleep. Tap anywhere to wake it. Shake your device to toggle the flashlight. The display stays on all night—no more waking up to a black screen. Alarms that actually wake you Sleep Friendly alarms are delivered by iOS itself. They ring even when the app is closed, break through Silent mode and Focus, and put Snooze and Dismiss right on your Lock Screen. Set up to 3 alarms for free, with unlimited alarms available with a one-time Pro upgrade. Choose from 13 alarm sounds, set repeat days, configure snooze duration, and add a personal voice announcement that speaks when your alarm fires while Sleep Friendly is open on your nightstand—remind yourself to take your medication, drink water, or just hear a friendly good morning. Live weather on your clock Current conditions, a 7-day forecast, sunrise and sunset times, and weather alerts—all powered by the National Weather Service (US), right on your clock screen. No account required. Beautiful clock faces Choose from Digital, Analog, Modern, Roman Numeral, Steampunk, Dot Matrix, and Arc Radial clock faces. The free tier includes the Digital face; Pro unlocks them all. No ads. Ever. Sleep Friendly is built by Deep Dark Abyss, a small independent studio. We believe your bedroom shouldn't be a billboard. There are no ads in Sleep Friendly—not now, not ever. A one-time $0.99 Pro upgrade unlocks unlimited alarms and all clock faces, with no recurring fees. Deep Dark Abyss makes tools that respect your time, your space, and your sleep. Sleep Friendly is our alarm clock. We hope it becomes yours. Requires iOS 26 or later.