The cleaned file is the free file.Same model, same result, no quality held back for a paid tier.
By ShinobiTools Team · Last updated: August 2026
A recording that sounds muddy is usually a recording with a room behind it. Drop it in and the background is pulled down so the voice sits in front, where it belongs.
Not every upload makes it through cleanup, and it's worth being upfront about why. In the 31 days to 21 August, CleanGrab rejected 15 uploads and only 1 failed outright once processing had started — most problems get caught before cleanup even begins, at the file check. The single largest rejection reason on record was simply a file over the 1 GB limit, logged 3 times in that period; runs that get past that check almost always finish cleanly. That 15-and-1 split matters because it means the model itself is reliable once a file is accepted — the thing worth worrying about is uploading something already too big or too long, not the cleanup silently making a recording worse. It also means the size and length limits are doing their job as a filter, not a wall — they catch what genuinely can't be processed and let everything else straight through. We'd rather publish that small, honest split than bury it because it doesn't sound impressive.
Clarity is mostly a contrast problem. Your voice was always there; it is competing with a fan, a street, a laptop, the hum of the room. Pull that layer down and the same recording reads as sharper, closer and easier to listen to — without touching the voice itself.
That is the honest scope of this page: it is the same model as the rest of the site, aimed at the question people actually ask. It does not add detail that was never recorded, it does not raise a whisper into a broadcast voice, and it will not rescue a clipped or distorted file.
Just want the short version? See enhance speech online for the same tool without the explanation.
The page starts on Balanced, which keeps voices sounding like themselves. Two exceptions worth knowing: if the recording is hollow and echoey rather than noisy, the room echo page starts on Strong, which is the setting that actually reaches the echo tail. And if the voice starts sounding processed or swallowed, step back to Gentle — over-cleaning is the most common way to make a recording worse.
Heavy room echo and reverb are a harder, separate problem: CleanGrab reduces light echo, but it will not fully erase a very reverberant room. We'd rather say that plainly than promise something the tool can't do.
CleanGrab is tuned for voice and speech — podcasts, interviews, calls, voice memos, lectures. On music or other non-speech audio the result can be poor, and the tool will tell you when it couldn't detect clear speech instead of handing you a mangled file.
Phone memos are the most common thing dropped in here, and they have a particular problem: the microphone is close to your hand and far from your mouth, so it picks up the room and the handling as loudly as the voice.
Upload it here and let the model pull the background down. The voice stays as it was recorded; what changes is everything behind it, which is what makes a recording read as muddy in the first place.
Not by itself — this separates voice from background rather than boosting level. A voice that was recorded very quietly will sound clearer but still quiet; that is a levelling job, not a cleaning one.
Heavy room echo and reverb are a harder, separate problem: CleanGrab reduces light echo, but it will not fully erase a very reverberant room. We'd rather say that plainly than promise something the tool can't do.
MP3, WAV, M4A, FLAC, OGG, and common video files, up to 45 minutes per upload. You get back a cleaned MP3 (192 kbps) and a lossless WAV.
Yes — no account, no watermark, no daily or monthly cap. Adobe Podcast, Krisp and Cleanvoice all limit free usage to push you toward a paid tier. Here the free version cleans recordings up to 45 minutes with no daily cap and no watermark; the optional pass only raises that ceiling, it never lowers it. The ads around the tool cover running our hardware.
No. Your upload is deleted the moment it's processed and the cleaned file is wiped from the server within 45 minutes. Nothing is stored, shared or used to train anything — see privacy.