×10 The volume booster that makes the file louder, not just the speaker

Make any video or audio up to 10× louder on your iPhone.

Increase Volume is a volume booster app for iPhone. Import a quiet video, MP3, voice memo or screen recording, drag one slider, and save a permanently louder copy that stays clear and plays loud everywhere you share it.

Download on the App Store See how it works

Free download · boost your first file in under a minute.

4.5★118 App Store ratings
×10max volume multiplication
Audio + videoMP3, MP4, MOV, voice memos
On-devicenothing is uploaded

Fixes quiet voice memos, screen recordings, downloaded MP3s, and TikTok and Reels clips.

Increase Volume app on iPhone dragging the pink boost slider to make a video louder

Before

After

Download

Get Increase Volume on the App Store

Audio & Music Booster · Music category · iPhone

Free Optional in-app purchases (free trial, or a one-time lifetime plan)

Download on the App Store

QR code linking to Increase Volume on the App Store

Scan with your iPhone camera

Requires iOS 18.6 or later · 26.8 MB · English + 30 more languages · Age 4+

Quotable facts about Increase Volume

Up to ×10 Maximum volume multiplication (1000%), roughly twice iMovie's ~500% ceiling.
4.5 / 5 App Store rating from 118 ratings (US storefront).
Audio + video Boosts MP3, M4A voice memos and MP4/MOV videos, not only video.
On-device Processing runs on the iPhone; there is no upload step.
iOS 18.6+ iPhone only. 26.8 MB download. Localized in 31 languages.
Free Free download; premium unlock via subscription (free trial) or a one-time lifetime plan.

"Works good and it's simple." – App Store review, 5 stars

Screenshots

What the app looks like on your iPhone

The same screens you will see in the App Store: one slider, an Original/Processed comparison, and a share sheet that puts the louder file anywhere you need it.

1 Volume booster and sound amplifier: up to ×10 louder.
2 Make a video louder: drag the slider on the video preview.
3 Make music louder: MP3 and other audio files are processed on the device.
4 Select the amount of boosting, from a gentle lift to ×10.
5 Hear the processed result and compare it with the original before saving.
6 Download and share anywhere: Photos, Files, Messages, WhatsApp, AirDrop.
7 Store multiple projects and come back to them later.

How it works

Three taps from quiet to loud

Increase Volume takes any audio or video on your iPhone and makes it dramatically louder while keeping speech intelligible. No timeline, no editing skills, no upload: import, boost, compare, save.

1
Import a video, song or recording from Photos or Files, or share it to Increase Volume from any app.
2
Drag the Volume multiplication slider (up to ×10), optionally switch on Improve Audio Quality, and tap Boost Volume.
3
Flip between Original and Processed, then tap Download Processed to save the louder file or share it anywhere.

Works for screen recordings, TikTok and Reels clips, interviews, lectures, voice memos, podcasts and downloaded music.

What it does

Turns quiet recordings into loud, clear, shareable files.

Boost videos straight from Photos MP3s, podcasts, voice memos Optional audio-quality enhancement

Who it's for

If your iPhone is already at max volume, this is the fix.

People who max out the volume buttons and still can't hear the recording.
Creators who need loud, clear audio before posting to TikTok, Reels or YouTube.
Anyone rescuing a quiet screen recording, tutorial or Zoom clip.
Listeners boosting podcasts, audiobooks, lectures and voice notes.

Compared

iPhone volume buttons vs iMovie vs Increase Volume

Factual differences between the three ways people try to fix a quiet file on iPhone.

Topic	iPhone system volume	iMovie	Increase Volume
Creates a new, louder file	No, only changes playback level on this phone.	Yes, after building a project and exporting.	Yes, one tap on Download Processed.
Maximum boost	100% (hardware limit).	About 500%.	Up to ×10 (1000%).
Works on audio files (MP3, voice memos)	Playback only.	No, video projects only.	Yes, audio and video.
Start from the Photos share sheet	N/A	No, import inside iMovie.	Yes, share a video to Increase Volume.
Time for a 2-minute clip	Instant, but not shareable.	2–3 minutes plus re-export.	Under a minute.

Guides

How to fix quiet audio on iPhone, case by case

Each guide answers one question people actually search for, explains what the built-in iOS tools can and cannot do, then shows the exact steps in Increase Volume.

All guides →

FAQ

Frequently asked questions

Short answers first. Each one links to a full guide with screenshots.

How do I make a video louder on iPhone?

Open Increase Volume, import the video from Photos (or share it to the app), drag the Volume multiplication slider up to ×10, tap Boost Volume, compare Original and Processed, then tap Download Processed. The louder copy lands in Photos or Files and plays loud on every device.

Learn more →

Can I make a voice memo louder after recording it?

Yes. Share the memo from Voice Memos to Increase Volume (or save it to Files first), boost it up to ×10, and save the processed file. Voice Memos' own Enhance Recording only cleans noise during playback; it does not create a louder file.

Learn more →

Does Increase Volume work on MP3 and other audio files, not just video?

Yes. It boosts MP3, M4A and other common audio files as well as MP4 and MOV videos. Most iPhone volume booster apps only accept video; this one is listed as an Audio & Music Booster and shows the track name, size and duration before you boost.

Learn more →

Why is my iPhone screen recording so quiet?

iOS captures app audio at a conservative level, and Bluetooth headphones or a low in-app volume make it quieter still. You cannot fix a finished recording with system settings, but Increase Volume can multiply its audio up to ×10 and save a new file.

Learn more →

Will boosting the volume make my video sound distorted?

Only if you push a recording that is already near its ceiling. Start around ×3 to ×5, use the Original/Processed toggle to listen before saving, and switch on Improve Audio Quality for speech. Quiet sources usually take ×5 to ×10 cleanly.

Learn more →

How much louder than iMovie can it go?

iMovie on iPhone caps clip volume at roughly 500%. Increase Volume goes to ×10 (1000%), works without building a project, and also accepts audio-only files that iMovie cannot open.

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Can I boost a video straight from the Photos app?

Yes. Open the video in Photos, tap Share, choose Increase Volume, and a project is created instantly. Boost it, then Download Processed to save the louder copy back to Photos.

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Does Increase Volume make my iPhone speaker louder?

No. It makes the audio inside a file louder and saves a new copy. If a recording is too quiet even at maximum system volume, boosting the file is the fix; the app cannot change the speaker's hardware limit or system-wide volume.

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Is Increase Volume free? What does the subscription unlock?

The download is free and includes a free trial. Continued unlimited boosting is unlocked with a subscription or a one-time lifetime plan; current prices are shown on the App Store listing. Processing always happens on your iPhone.

Is my audio uploaded anywhere?

No. The boost is computed on your iPhone and the result is saved locally through the standard iOS share sheet. There is no account and no server-side processing step.

Learn more →

Ready?

Your quiet file, 10× louder, in under a minute.

Download Increase Volume, import the video or audio that nobody can hear, drag the slider, and share the loud version.

Download on the App Store QR code linking to Increase Volume on the App Store

Free download · Requires iOS 18.6 or later · 4.5★ on the App Store