Creative media generation and editing
Audio playback and sound tools
Consumer and creator audio utilities: ambient/sleep sound mixers, browser and device equalizers and volume boosters, spatial audio effects, visualizers, decibel meters, and browser-based stem separation, mastering and editing tools.
Built for: Music listeners, focus/sleep seekers, home musicians
Projects since May 04
227
Different builders
223
Last 4 weeks vs 8 before
+10%
AI is the core
7.9%
Projects per week
Mostly desktop app (29%), mobile app (28%), web app (22%) · from r/SideProject, r/chrome_extensions, r/vibecoding, r/IMadeThis
Latest
- Sound-Pop Studio — Finds sound events similar to a selected sample across a multichannel audio session and lets the user confirm and batch-edit only the chosen occurrences.“We built a 64-channel audio editor that lets you find a sound and edit its confirmed occurrences”
- StreamSleep — Pauses phone audio or video playback and saves the position once it detects the user has fallen asleep.“I built an app that pauses Netflix when you sleep!”
- Sleepanion — Plays bedtime audio from 64 sound worlds, with favorites and recently played sounds.“Sleepanion for iPhone: should returning listeners see recent sounds or favorites first?”
- Rewind Music — Plays the same song in sync across multiple iOS devices at once, with an equalizer, gapless playback and sleep timer.“[iOS] Rewind Music - Play Same music simultaneously on 8 devices”
- onion-board — Plays sounds through your microphone into Discord and games, with hotkeys, screen-triggered sounds, and audio effects.“I made a free Windows soundboard because I didn't want to pay for Soundpad or Voicemod”
- Tunedaway — Plays background music over selectable scene visuals and swaps in new photos without interrupting playback.“I shared my little music website here a few weeks ago. It now lets you change the view without stopping the music.”
- Vocal Freedom Studio — Provides a browser-based platform for vocal coaching with pitch detection, voice spectrum and formant analysis, learning modules, coach-student video calls, assignments, and file sharing.“Developing a Platform for Vocal Coaching”
- Vilm Care — Applies and reverts Windows power and device settings for audio work, verifies them against hardware, and logs system events locally.“[Vilm care] I built a free care tool for Windows PC”
- TuningMac — Controls headphone listening modes, applies a system-wide equalizer, and plays audio through multiple speakers in sync on a Mac.“I built TuningMac, a Mac app for headphone controls, system-wide EQ and syncing multiple speakers”
- yt-mono-audio-fixer — Forces mono YouTube audio to play in stereo within the browser.“I got annoyed by mono YouTube audio, so I built a free extension to force it to stereo.”
- Patio de Azahar — Plays ambient Spanish guitar background sound in the browser for reading or studying.“I made Patio de Azahar for reading (or studying)”
- Free Tab Audio & Sound Recorder — Records a browser tab's audio continuously to disk as an MP4 or WAV file.“Built a tab audio recorder that writes to disk live instead of holding everything in memory — found a nasty perf bug along the way”
- Micutre — Streams live phone microphone audio to a connected Bluetooth speaker with voice effects, JSON presets, and a soundboard.“Micutre — an open-source Android Bluetooth microphone”
- Soundlevel — Measures sound level in decibels and provides a mic test, instrument tuner, and metronome, all in the browser.“I built Soundlevel: a free decibel meter, mic test, tuner, and metronome that run in the browser with no app or sign-up”
- roomtreatment.diy — Checks whether studio acoustic gear is compatible and simulates room sound to suggest acoustic treatment.“I built a free tool that checks if your acoustic gear works together”
- AirSend — Sends audio from Windows apps to AirPlay 2 speakers such as HomePods.“I built a free Windows app to send system audio to HomePod — looking for multi-device testers”
- SoundLyft — Boosts and shapes browser tab audio with a limiter, voice-frequency emphasis, dynamic range compression and a latency delay slider.“Tired of straining to hear quiet YouTube videos, work meetings, and streaming movies, so I built SoundLyft — a volume booster with voice clarity and zero distortion”
- Compressr — Automatically evens out audio loudness and suppresses sudden volume spikes in browser media in real time.“Built a browser extension that auto-levels online audio so videos don’t blast my ears.”
- Weatherling — Draws simulated rain drops and water running down the edges of open Mac windows on a transparent overlay.“Make it rain on your Mac desktop!”
- PhoneMic — Streams audio from a phone's microphone over the local Wi-Fi network to a Windows PC as a virtual microphone input.“PhoneMic turns an iPhone or Android phone into a Windows microphone”
Most discussed
- S.T.F.U — Listens through the microphone for yelling, then minimizes the game and shows escalating fullscreen overlays and sounds, while logging each event.“S.T.F.U - I built an app that punishes my kid for yelling while gaming. It calibrates to his voice, escalates consequences, and logs everything.”
- StemKit — Downloads audio from a YouTube link, splits it locally into selected instrument stems, and plays them synced with the video.“I built a free desktop app that splits any YouTube song into stems”
- Luten — Picks a soundscape from plain-text descriptions of how the user feels and learns from which sounds they finish or skip.“Laid off last year, spent it building an iOS sound app. It went live this morning.”
- Weatherling — Draws simulated rain drops and water running down the edges of open Mac windows on a transparent overlay.“Make it rain on your Mac desktop!”
- Lull — Plays audiobooks and podcasts with a sleep timer that fades into looping ambient sounds, and uses Apple Watch data to detect sleep and rewind playback.“I made an audiobook + podcast app that fades into sleep sounds when you nod off, and uses your Apple Watch to catch when you actually fall asleep”
- Ombré — Generates noise live on-device and lets the user morph continuously between brown, static, water and rain sounds by dragging a gradient pad.“My noise app has exactly 1 paying subscriber, so today I killed the subscription”
- StemDeck — Separates an audio file or YouTube link into stems locally and provides a browser mixer to mute, solo, loop and export them.“Are there any cool side projects out there that have no interest in monetization? I'll share mine first.”
- Tunedaway — Plays background music over selectable scene visuals and swaps in new photos without interrupting playback.“I shared my little music website here a few weeks ago. It now lets you change the view without stopping the music.”
- stagemic — Turns smartphones into wireless microphones through a browser over WebRTC, with no app install needed.“I Built a browser-based wireless mic system using WebRTC”
- Delay Lama Standalone — Runs the Delay Lama audio delay effect as a standalone macOS app instead of a VST plugin.“Delay Lama Standalone”