ZEEP, audio editor

ZEEP is a multitrack audio editor built on one idea: edit audio the moment you touch it, with nothing to render and nothing to wait for. Stack clips on lanes, scrub speed and pitch live, and clean up recordings with on-device AI noise reduction.

At a glance
• No ads
• No account and no sign-in needed to edit
• The editor is free: every tool, every lane, every export format
• ZEEP Pro is an optional subscription for the Library only: folders, Projects and OneDrive sync
• Editing runs entirely on your device, with no network connection

🧬 Multitrack, clip by clip
Lanes hold as many clips as you drop on them. Long-press a clip and drag it along the timeline or onto another lane, with a live preview of where it will land. Pinch to zoom, split a clip at the playhead or join neighboring clips back into one, duplicate, mute or reverse a clip, or bake its effects in with Commit and keep building. A 30-clip session plays back smoothly.

🎨 See the sound before you hear it
Waveform bars can color by spectral prominence. Steady background noise, wind, room tone, hiss, stays gray no matter how loud it is; a sound that rises above it lights up in its frequency's color, even when it's quieter than the background. The word buried in a noisy take shows up by eye, so you drop the cut where it starts instead of scrubbing for it by ear. On by default in the cutting tools, or everywhere if you want it.

✂️ Precise, non-destructive editing

• Trim & Cut works right on the timeline: mark cut points, cut the section under the playhead, restore any removed piece with one tap
• Split a clip into several pieces in one pass, listen to each piece on its own, and drop the ones you don't want
• Reverse any clip
• Per-clip volume with linear fade in and fade out
• Compress dynamic range with a single knob, with automatic make-up gain
• Loudness in LUFS for a clip, matched to a target with one tap; a true-peak limiter keeps loud exports from clipping
• Clipped, overloaded audio is flagged right on the waveform, with a warning when you import or record it
• Every cut plays through clean: an engine-level fade removes the click at edit seams

🎙 Record straight into your edit
Record stereo audio straight onto a new lane, then edit it alongside everything else.

📱 Full-screen editing in landscape
Rotate your phone and the waveform takes the whole screen. Every clip tool gets a compact control on the timeline. Every change previews live before you commit.

⚡ Realtime speed and pitch
Change speed without changing pitch, or shift pitch without changing length, and hear the result instantly as you adjust. The "Keep natural sound" toggle keeps a shifted voice or instrument sounding like itself. Tuned engine modes for voice, mixed audio, and music.

🤖 AI noise reduction, on device
Remove background noise from voice recordings with DeepFilterNet, a machine-learning denoise model that runs entirely on your phone. Auto-detect and strip silent gaps to tighten up voice and podcast recordings.

🔁 Import and export
Import almost any audio format at full quality. Export to MP3 (128/192/320 kbps), M4A / AAC, WAV, or lossless FLAC.

📁 Library, projects and ZEEP Pro
The Library keeps every recording, import and export in one place, with a Trash you can restore from. Playback continues in the background, with lock screen controls. The complete editor, every tool and every lane, is free. ZEEP Pro is an optional subscription for workflow: folders in the Library, Projects to keep several sessions and switch between them with every edit intact, and sync of a Library folder to your own OneDrive so you can continue on your PC.

🔒 Private by design
Your audio stays on your phone unless you choose to sync a Library folder to your own OneDrive.

Built on a native C++ audio engine for low-latency, non-destructive editing with full undo and redo, ZEEP is made for anyone who wants quick, clean multitrack edits on a phone.