Denoise

Denoise is an Android and iOS app for cleaning up spoken recordings, videos and music tracks. It suits people who want private, offline processing on a mobile device, especially when a clip needs more than basic noise reduction. Its main limitation is that the free plan lets you preview the result but not keep it.

Overview

Denoise uses an on-device neural network to reduce wind, traffic, hiss, hum and crowd noise in voice memos, interviews and videos. Echo and reverb removal and voice isolation broaden its reach beyond background-noise cleanup. Processing works without a connection, and a one-minute clip typically takes 5–10 seconds, making it practical for quick mobile jobs as well as airplane-mode use.

Import recordings from Voice Memos, Photos, Files or an app’s share sheet, including MP4, M4A, MP3 and WAV. There is no file-length limit, even for a three-hour lecture. That is a useful allowance for students and interviewers with long recordings, but Free still cannot save or export the processed audio.

Key features

Denoise’s Pro VoiceFixer engine addresses recordings that are muffled, clipped or distant, rebuilding detail and adding high frequencies that were not captured. That makes Pro more compelling for rescuing imperfect speech than a denoiser limited to reducing background noise. Pro can export M4A, MP3 or WAV files and replace a video’s audio, so cleanup can stay within the same app.

On-device vocal separation can split vocals and instrumental tracks from songs or video soundtracks, producing acapella, instrumental or karaoke results. A five-band EQ offers Voice, Phone Call, Lecture and Music presets, while automatic loudness normalization provides −16, −14, −19 or −23 LUFS options. These are useful finishing controls for creators and students, though they do not overcome the free plan’s inability to save a result.

Pricing

Free to try: free, billed $0/to start. Users can import and denoise recordings and hear the full before-and-after result. Saving and exporting require Pro, so this is a preview tier rather than a way to produce finished files. There is no free trial.

Pro monthly: $2.99 a month, billed $2.99/mo. It unlocks saving, sharing and export in M4A, MP3 and WAV, video-audio replacement, VoiceFixer restoration, vocal and music separation, and LUFS loudness controls. This is the straightforward choice for occasional or ongoing use without a larger upfront payment.

Pro lifetime: $14.99, paid once, billed $14.99once; yours forever. It includes the same paid tools and fits users who expect to keep using Denoise and prefer a one-time purchase. Both paid plans retain the no-file-length-limit allowance; the free plan also has no stated length cap, but cannot save the output.

Platforms

Denoise runs on Android and iOS. Its on-device processing supports offline work, but the mobile-only platform coverage makes it a poor fit for people who need a desktop workflow.

Who it's for

Podcasters, creators, journalists and students can use Denoise to clean speech recordings, work with long lectures or replace audio in a video. It is also suited to anyone handling private recordings who wants processing to remain on the device. People who need saved results without paying, or who require a desktop app, should look elsewhere.

Pros and cons

• Pro: Processing stays on the device and works offline, a meaningful advantage for private material and use away from a connection.
• Pro: No file-length limit accommodates recordings as long as a three-hour lecture.
• Pro: Noise reduction, restoration, vocal separation and video-audio replacement cover several editing needs in one mobile app.
• Con: Free users cannot save or export, so the before-and-after preview cannot become a usable finished file without Pro.
• Con: Anonymous usage analytics, crash and diagnostic reports, a random app identifier and an optional push-notification token are collected through Google Firebase, despite recordings remaining on-device.
• Con: Android and iOS support leaves desktop users without a native option.

Alternatives

For broader platform coverage and a free allowance of 200 starting credits, MP3 export and files up to 10 minutes, consider AudioShake. Its free plan includes separate stems and lyric editing, while Denoise has no file-length limit but requires Pro to save results.

LALAL.AI is an alternative with an always-free Starter tier offering 10 minutes in a relaxed queue, a 200 MB per-file upload limit and previews, but not full downloads.

Sharpi is a Windows and self-hosted option for readers seeking those platforms.

Demixr is a web-based alternative with a free monthly allowance of 10 minutes of uploaded audio, a 10 MB upload cap, two free VAD uses, queued processing and no WAV downloads; its Go plan costs $4 a month.

Krisp Voice Isolation is an alternative for Linux and iOS users.

VocalDrop is a free alternative for Linux, macOS and Windows with no track limits, watermark, account or feature paywall.

AIVoiceSeparator offers a web and API option with a free allowance of three songs per month when signed in, full Studio quality and MP3 320, WAV and FLAC output.

BytePlus Voice and Background Audio Separation is an API option priced at $0.01, paid once per minute of input-file duration; storage and distribution may incur additional fees.

Browse AI Voice Isolators, AI Speech Enhancement Software or AI Audio Restoration Software for more options by category.

Verdict

Denoise is a strong fit for mobile users who want fast, offline cleanup of private recordings and value restoration and separation tools alongside denoising. The no-length-limit policy is generous, but Free is only useful for judging a preview; anyone who needs to keep their work must pay, and desktop users should choose another tool.