Choose or record the sound
Select compatible audio from Files, open a video from Photos or Files, or start a recording. When a video contains several audio tracks, choose the one you want to process.
Audio Effects · On device · Pro · iPhone + iPad
Change the character and space around a sound.
Open an audio file, choose an audio track from a video, or record a new sound. Apply one of 17 character, room, device, and atmosphere presets to the entire sound, or add multiple non-overlapping ranges and choose a different preset for each. Recording and processing stay on your device.
Three sources, flexible effect ranges
How to apply sound filters on iPhone.
The source stays unchanged, and every source creates a separate M4A audio result. Apply one effect from start to finish, or keep the source timeline and original sound outside multiple selected ranges. For a video, ClipFlow processes only the selected audio track; video frames do not enter the result.
Choose the scope and effects
Use All to apply one preset throughout, or use Local to add multiple non-overlapping ranges and choose an effect for each range.
Preview, create, and continue
Listen with the progress control, then generate the M4A on device. Local output keeps the full timeline and original sound outside the selected ranges; save it or continue in another compatible audio tool.
All 17 sound presets
Character: Deep Voice, High Pitch, Robot, Alien, and Monster. Space: Small Room, Hall, Deep Well, Large Tank, and Valley Echo. Device: Telephone, Radio, Broken Speaker, and 8-bit. Atmosphere: Underwater, Behind a Wall, and Ghost Voice.
These are intentional creative filters. Deep Voice and High Pitch make a voice sound lower or higher, but ClipFlow does not describe them as natural gender, age, or identity transformation.
One effect throughout—or different effects by range
Choose All to apply one preset to the complete selected track. Choose Local to add multiple non-overlapping segments; each segment can use its own preset, so one result can combine different effects at different moments.
Local processing keeps the original source timeline. Selected segments are filtered in place, while every unselected range stays original.
A recording view that responds to your voice
Recording starts only after you tap the record control and grant microphone permission. A live energy waveform reacts to the sound level while the timer runs, with controls to pause, resume, stop, discard, or record again.
ClipFlow keeps the recording as an unfiltered source so you can change the full-track preset or local segments without recording again. The source recording is stored only in app-managed local temporary storage for the current workflow; it is not uploaded.
Local processing and clear output
Preset preview, audio processing, and export run with Apple media frameworks on your device. Audio Effects requires ClipFlow Pro. It works on one selected audio track at a time, using either one preset throughout or separate presets across non-overlapping ranges; it is not a professional multitrack mixer.