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CLUSTER FREQUENCY-AUDIO-MOBILE · 9 ENTRIES · EARLIEST ENTRY 2014-05-30

Mobile audio signal tools

This cluster includes mobile apps for generating, analyzing, and identifying audio and radio frequency signals, covering hearing tests, tuners, signal generators, spectrum analyzers, and oscilloscopes. The seven dated entries span May 2014 to December 2024, with a thin distribution: one in 2014, three in 2022, and two in 2024. Traction leaders among these are Artemis, Oscilloscope, and Signal Generator, though all show zero stars as the highest observed activity signal.

Entry timeline

ENTRY TIMELINE

MAY 2014: 1OCT 2014: 1FEB 2022: 1JUN 2022: 1SEP 2022: 1OCT 2024: 1JAN 2026: 2SEP 2026: 1
MAY 2014SEP 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 1 ai-built · 3 hand-coded · 5 unlabelled

Operator · 3 hobby · 6 open source

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 9 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01PulseLightHub1★25 days—hobbyAndroid app that turns real-time audio into RGB glyph light patterns on Realme GT 5 phones using beat detection.
  2. 02Artemis0★3 moliveopen sourceRadio frequency signal identification tool that catalogs spectrum data, waterfalls, and audio samples against a community-maintained signal database.
  3. 03Oscilloscope0★2 moliveopen sourceMobile app that displays a real time audio oscilloscope and frequency spectrum with adjustable timebase, sync, and signal storage.
  4. 04Audio Spectrum Analyzer0★6 mostalelivehand-codedopen sourceMobile app that analyzes real-time audio spectrum and spectrogram data for monitoring sound, tuning instruments, and timing acoustic events.
  5. 05Signal Generator0★6 mostaleliveopen sourceMobile audio signal generator app with a twirly frequency knob, fine level and frequency sliders, and saved frequency bookmarks.
  6. 06hEARtest0★16 dayslivehand-codedopen sourceMobile app that evaluates hearing ability through calibrated tone tests and classifies hearing loss severity by frequency.
  7. 07Spectrum-Scope1★9 mostale—ai-builthobbyDesktop app for macOS that visualizes audio spectrum in real time and auto-syncs system sample rate for lossless music playback.
  8. 08AudioWaveformApp0★8 mostale—hobbyMobile app that records audio with real-time waveform visualization, cloud storage, and a list of past recordings for playback.
  9. 09Samplebrain0★4 yrabandonedlivehand-codedopen sourceAudio app that chops samples into blocks and matches them to reinterpret target sounds in real time.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.