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On-Device Echo & Noise Removal

OffgridVox

Remove room echo and background noise from any voice recording, right on your iPhone. Nothing uploaded, no subscription — your recordings never leave your device.

Download on the App Store
Version 2.1 · Live on the App Store

What it does

OffgridVox turns roomy, echoey or noisy voice recordings into clear speech, entirely on your iPhone. No data is ever uploaded to a server.

It’s built for podcasters, journalists, teachers and anyone recording voice in less-than-ideal places: a kitchen, a classroom, a hotel room. Like every Offgrid Studio app, all processing happens on-device.

What’s new in 2.1

  • Video. Import a video from Files. OffgridVox removes the noise and echo from its sound and puts the cleaned audio back into the original video. The picture isn’t re-encoded, so it doesn’t lose quality (Premium).
  • A free trial with every feature. Your first 3 enhancements have no length limit and include video.
  • Trial counter. A line under the Enhance button shows how many trial enhancements are left.
  • Clearer Premium screen. It explains why it opened and compares Free and Premium.

Introduced in 2.0

Our biggest update so far. Version 2.0 rebuilds the processing pipeline around echo removal.

  • AI echo removal. A new on-device de-reverberation model (Sidon) reduces the room sound that makes recordings feel distant.
  • Voice first, then repair. OffgridVox separates the voice from everything else before cleaning it, so the repair works on the speech itself.
  • Automatic clean-up chain. Clicks and pops, electrical hum, plosives, harsh sibilance, a noise gate and level balancing, handled in one pass.
  • Long recordings, no seams. Long files are processed in sections and joined back without audible breaks.
  • Before and after. Switch between the original and the cleaned version to hear the difference.
  • Progress you can read. See how far along a file is and roughly how long is left.
  • One-tap flow. Pick a recording, tap once, get a cleaned file.
  • Seven languages. The app is now available in 7 languages.
  • A new icon.
  • Open-source credits. A new acknowledgements page lists the open-source work OffgridVox builds on.

Requirements

iPhone with iOS 18 or later. All processing runs on the device, so longer recordings take longer on older iPhones.

Pricing

Your first 3 enhancements include every feature, any length and video included. After that, the free version enhances recordings up to 1 minute. Unlimited length and video are a one-time purchase of £14.99 (US$14.99 in the US; prices vary by region) — no subscription.

Frequently asked questions

Does OffgridVox work without an internet connection?

Yes — all noise reduction happens on-device, so it works fully offline, including in Airplane Mode.

Is my recording uploaded anywhere?

No. Nothing is sent to a server as part of processing. See our Privacy Policy for details.

Does OffgridVox require a subscription?

No — unlocking unlimited noise reduction is a one-time purchase of £14.99, not a recurring subscription.

Does OffgridVox collect any user data?

No. OffgridVox uses the same on-device architecture as the rest of Offgrid Studio's apps. Published network audits for OffgridStem and OffgridScribe are available on our Privacy Policy page; a dedicated audit for OffgridVox hasn't been published yet.

How much does OffgridVox cost?

Your first 3 enhancements include every feature. After that, the free version enhances recordings up to 1 minute. Unlimited length and video are a one-time purchase of £14.99.

Can OffgridVox remove echo from a recording?

Yes. OffgridVox removes echo with an AI model that runs on the iPhone. It reduces room reverb in voice recordings made in echoey spaces, alongside background noise removal.

Can OffgridVox remove noise from a video?

Yes, from version 2.1. Import a video from Files and OffgridVox cleans its sound, then puts the audio back into the original video without re-encoding the picture. Video is part of Premium, and included in the 3-enhancement free trial.

Which iOS version does OffgridVox need?

OffgridVox requires iOS 18 or later.

Guides

How to Remove Echo From a Voice Recording on iPhone
How to Clean Up Background Noise From a Voice Recording on iPhone (Fully Offline)
How to Clean Up a Podcast Recording Before Publishing on iPhone (Fully Offline)

More from Offgrid Studio

Also check out OffgridStem and OffgridScribe, all available now on the App Store.

Back to Offgrid Studio