See the highs come back
A live before/after over a dual spectrogram shows brand-new detail synthesized above the original cutoff line.
One tap rebuilds the high frequencies your recording is missing — turning muffled, tinny, low-bitrate audio into crisp 48 kHz HD. On-device AI, no upload, no account — nothing leaves your iPhone.
Download on the App StoreFree to start · 1 upscale a day, no account required
It regenerates the detail your audio is missing — it doesn’t just turn it up.
True neural bandwidth extension rebuilds the high frequencies that are actually missing — it keeps your real voice and never re-speaks it.
Upscale the audio inside a video clip from Photos. The video stream itself stays untouched — only the sound gets the HD treatment.
No upload, no account, no cloud. Standard HD upscaling runs entirely on the Apple chip in your iPhone — even in airplane mode.
A live before/after over a dual spectrogram shows brand-new detail synthesized above the original cutoff line.
Three steps. From muffled to HD.
Record in the app, import audio (m4a, wav, mp3, caf), or pick a video clip from Photos.
On-device AI rebuilds the missing highs toward 48 kHz HD. Standard HD is free; Studio HD on Premium.
Watch new detail appear above the cutoff line, A/B the before vs. after, then save or share in HD.
Start free. Upgrade when one upscale a day isn’t enough.
Rebuilds the highs right on your iPhone — no upload, no account, no waiting.
Download on the App Store