Notte vs Signal Scope Studio

Notte makes the web easier to see. It is a free, user-side accessibility tool for people with low vision, built by someone living with a degenerative eye condition. It works on every website you visit, in Safari on iPhone, iPad and Mac. Dark mode is where Notte starts. It is not where it stops. HIGH-CONTRAST DARK MODE Notte does not invert colours. It reads each page's own stylesheets and remaps every colour in HSL, so backgrounds go deep and text goes bright while buttons, links and highlights stay distinct and recognisable. Contrast stays high — around 11:1 in testing, well past the WCAG AA threshold. Sites that already ship a good dark theme are detected and left alone. Photographs, video and illustrations keep their natural colours. THE ACCESSIBILITY TOOLKIT Every control is per-site and remembered, so a page you struggle with stays adjusted the way you need it, every time you come back: • Contrast — hold text to a guaranteed WCAG AAA contrast target • Brightness — dim pages that are painful to look at • Saturation — mute strong colour, or go fully greyscale • Warm tint — cut blue light for long or late reading • Dim images — soften bright or busy pictures • Text size — enlarge text on any site • Letter and word spacing — open up crowded type • Line spacing — give paragraphs room to breathe • Emphasise links — underline every link so it is unmistakable • Strong focus — a thick, high-visibility outline for keyboard navigation • Reduce motion — stop animation and parallax The tools work whether dark mode is on or off. You can keep a page's own light design and still raise its contrast, enlarge its text, or calm its colour. FREE, AND STAYING THAT WAY No ads. No subscriptions. No in-app purchases. No donations. Notte collects no data of any kind — no analytics, no tracking, no accounts. Nothing leaves your device; your settings stay on it. Notte asks only for the access it needs to restyle the pages you open, and the source code is public so anyone can check that for themselves. A USER-SIDE TOOL Notte adapts pages for you, in your own browser. It is the opposite of a website "accessibility overlay": it never changes a site for anyone else, and it makes no claim about any site's compliance. Notte is open source. Questions, ideas and contributions are welcome.

Signal Scope Studio combines a dual-channel oscillator, an output signal simulator, a live microphone oscilloscope and spectrum analyzer, and a stereo decibel meter in one audio toolkit. DUAL SIGNAL GENERATOR • Set sine, square, triangle, falling sawtooth, or white noise independently for LEFT and RIGHT • Adjust frequency from 20 Hz to 20 kHz and volume from 0 to 100% with 270-degree dials. Frequency also supports numeric entry • Adjust left and right frequency and volume independently, or link them while preserving the ratios at the time linking is enabled • Output different frequencies from the left and right channels to produce beats and other effects OUTPUT SIGNAL SIMULATOR • Linearly sum LEFT + RIGHT internally and display the waveform and spectrum together • Adjust Auto Trigger, freeze/resume, vertical and horizontal zoom, and refresh interval • Control frequency range, spectrum sensitivity, and FFT resolution with dials or pinch and pan gestures • Save high-resolution graphs with a dark navy background, white text, and green traces to Photos WAVESCOPE • Display the time-domain waveform and frequency spectrum of microphone input together in real time • Use Auto Trigger, freeze display, pinch zoom, and a movable settings window • Open Dual Signal Generator within the app and measure the actual sound emitted by the same device DECIBEL METER • Display relative microphone input levels on analog-style VU meters in real time • Automatically detect stereo or mono input: two separate meters for the left and right channels in stereo, or one meter in mono • Use PEAK indicators to spot brief sounds near the maximum input level • Save a calibration offset to match a commercial decibel meter MORE • All features are available for seven days from the original download date. After the trial, Dual Signal Generator and Decibel Meter remain free to use; a one-time purchase lets you continue using WaveScope. • Includes detailed offline manuals in Japanese, English, and French. • Supports iPhone and iPad in portrait and landscape. PLEASE NOTE • Measurements depend on the device and environment. • This app is intended for education, experiments, and general audio checks. It is not a substitute for calibrated instruments, certified sound-level meters, or medical devices.