Slowed Reverb App
No app store, no download, no updates — add our slowed reverb tool to your home screen and it works like a native app. One tap and you are creating.
Your audio never leaves your device. All processing happens locally in your browser.
Drop your audio file here
or click to browse — MP3, WAV, M4A, OGG, FLAC up to 50MB
Would not it be great if the slowed reverb generator felt like a real app on your phone? One tap from your home screen, no browser chrome, no typing a URL — just open and start creating. That is exactly what Progressive Web App (PWA) technology enables, and our tool supports it fully. Add SlowedAndReverb to your home screen and it behaves like a native app: full-screen launch, offline access to the interface, and a dedicated icon alongside your other apps.
On iOS (iPhone and iPad), the process takes about ten seconds. Open slowedandreverb.app in Safari, tap the Share button (the square with the arrow at the bottom of the screen), scroll down, and tap Add to Home Screen. Give it a name (or keep the default), tap Add, and it appears on your home screen. The next time you want to make a slowed reverb edit, tap the icon — no Safari, no typing, no bookmarks.
On Android (Chrome), the process is even simpler. Open the site in Chrome, tap the three-dot menu, and select Add to Home Screen. Chrome may also show an automatic install prompt at the bottom of the screen after you have visited a few times — just tap that and confirm. The result is the same: an app icon that launches directly into the tool.
On desktop (Chrome and Edge), look for the install icon in the address bar — a small monitor with a downward arrow. Click it, confirm the install, and the tool opens in its own window without browser tabs, bookmarks bar, or other distractions. It feels like a dedicated desktop application.
What can you do with the PWA version? Everything the browser version does: upload audio, preview in real-time, adjust all five parameters, switch between presets, and export. The audio engine works exactly the same way because it runs on the same Web Audio API. The interface is fully responsive and adapts to your screen size — sliders are touch-optimised, buttons are sized for fingers, and the layout reflows for phones, tablets, and desktops.
The PWA also caches the application shell, so launching it is nearly instant — much faster than typing a URL and waiting for a cold page load. This matters when inspiration strikes and you want to capture a musical idea before it fades. One tap, drop in a track, start tweaking. That is the app experience, no app store required.
Frequently asked questions
- Is the PWA the same as a native iOS or Android app?
- Functionally, yes. The PWA gives you a full-screen experience with an app icon on your home screen. Performance is identical because the audio engine runs on the same Web Audio API. The main difference is distribution: PWAs do not go through app stores, so there is no 30% platform fee (which helps keep Pro at $6/month instead of $9/month).
- Does the PWA work offline?
- The application shell (interface, presets, controls) is cached and loads offline. Audio processing works offline because it runs locally on your device. You need internet for the initial page load and for the MP3 encoder (lamejs) on the first export — after that, everything runs locally.
- Will there be a native app in the App Store or Google Play?
- We are evaluating native apps for potential benefits like better file-system access and background processing, but the PWA already delivers the core experience. If we release native apps, Pro subscribers will get them at no extra cost. For now, the PWA gets you the same tool with zero installation friction.