Denoise

Denoise is a mobile app for reducing noise and improving recordings on Android and iOS. It is best for people who want private, offline cleanup on a phone; its free tier lets you preview the result, but saving it requires Pro.

Its appeal is breadth: noise reduction sits alongside audio restoration, vocal separation and controls for shaping and leveling sound. The trade-off is that finished exports and most of those extras are paid.

Overview

Denoise uses an on-device neural network to remove wind, traffic, hiss, hum and crowd noise from voice memos, interviews and videos. It also supports echo and reverb removal and voice isolation. Processing works in airplane mode, and a one-minute clip typically takes 5–10 seconds. That makes it a practical option for private material or work without a connection, though its Android and iOS focus will not suit a desktop editing workflow.

Recordings can come from Voice Memos, Photos, Files or an app’s share sheet. Supported inputs include MP4, M4A, MP3 and WAV, and there is no file-length limit—even a three-hour lecture can be processed. Free users can hear the full before-and-after result, but cannot save or export it. That restriction makes the free plan a preview rather than a usable end-to-end workflow.

Key features

Pro’s VoiceFixer restoration engine is designed for audio that is damaged or lacks clarity, not just audio with background noise. It can rebuild detail in clipped, muffled or distant recordings and add high frequencies that were not captured. This is useful for imperfect interviews, lectures or voice memos, though it cannot recover detail that was never recorded beyond what the engine can reconstruct.

Version 4.0 adds on-device separation of vocals and instrumentals from songs or video soundtracks, with acapella, instrumental and karaoke results. That makes Denoise more versatile for music-related tasks than a basic cleanup tool. A five-band EQ offers Voice, Phone Call, Lecture and Music presets, while automatic LUFS normalization can target −16, −14, −19 or −23. These controls help tailor and level a result without changing the app’s mobile-first scope.

Pro can export M4A, MP3 or WAV files and replace audio inside a video. Batch processing and the lack of a file-length cap are useful for longer or multiple recordings, while the free tier’s inability to save remains the main obstacle to adopting it as a regular tool.

Pricing

Free to try costs nothing. It includes importing and denoising, plus a full before-and-after preview; saving and export require Pro. It is a sensible way to judge whether the cleanup helps, but not a lasting option for anyone who needs finished files.

Pro monthly costs $2.99 a month and adds saving, sharing and export in M4A, MP3 and WAV, video-audio replacement, VoiceFixer restoration, vocal/music separation and LUFS loudness controls. It suits people who need the full toolset but prefer a monthly commitment.

Pro lifetime costs $14.99, paid once and includes the same features as Pro monthly, with access described as yours forever. For someone expecting to use Denoise beyond a short-term project, this is the lower-cost paid option compared with continuing monthly billing. There is no free trial; Free serves as the preview tier instead. Neither paid plan has a file-length limit.

Platforms

Denoise is available on Android and iOS. On-device processing and offline operation are strengths for phone-based work, but readers who need a computer-based editor should look elsewhere.

Who it's for

Denoise suits podcasters, creators, journalists and students who want to clean up recordings on a mobile device, especially when privacy or offline use matters. Its restoration and separation tools broaden its appeal to people working with muffled speech or music tracks. It is a poor fit for anyone who needs to export without paying, or whose workflow depends on desktop software.

Pros and cons

• Pro: Processing stays on the device and works offline, which suits private recordings and disconnected work.
• Pro: No file-length cap accommodates long recordings, including three-hour lectures.
• Pro: Restoration, vocal separation, EQ and loudness normalization give Pro more range than noise reduction alone.
• Con: Free access stops at preview; saving and export require a paid plan.
• Con: Android and iOS support leaves desktop workflows out.
• 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 themselves never being uploaded or stored by Routes Software.

Alternatives

For a different platform or workflow, consider Neural Analog, which has a free plan, a free trial and support for API, Linux, macOS, web and Windows; its free tier is capped at two online or AI-platform imports a month, playlists of five items, 50 MB uploads, six processing minutes a month and 30-second inputs.

Decrackle Audio AI is worth considering for web, API or self-hosted access. Its free plan provides 10 MB of storage, 30 processing minutes a month, basic denoising, EnhanceNet v2 and MP3 output only.

For a web-based alternative, MusiCraft AI Audio Enhancer has a free tier with 50 credits per month and two editing runs per month.

Selekt Audio Restoration offers a web free trial of seven days, then $5/month or $50/year unless canceled; it requires a payment method and includes three tool credits and three total catalog/quote downloads.

PD Cleaner is a free, open-source Windows 64-bit option with no account or trial. Cathar is a free option for Linux and macOS.

CEDAR Cambridge is a paid macOS and Windows alternative built around a modular hardware and software system, with custom pricing. For a plugin and standalone desktop workflow, CrumplePop offers a multi-host monthly subscription at $25 a month.

Verdict

Choose Denoise if you want fast, offline mobile cleanup with restoration and vocal separation in the same app, and are willing to pay to keep the results. Its strongest case is the combination of on-device privacy, unlimited clip length and a broader Pro toolset. Look elsewhere if you need free exports or a desktop workflow.