Free to download
Volume Booster
A volume booster that just cranks everything to the max isn't doing you a favor — it's trading clarity now for potential hearing damage later. Here's roughly where common sounds sit on the loudness scale, and why a smarter approach beats a louder one.
- Automatic loud-sound cap
- No account needed
- Works with any headphones
- iPhone & Android
Roughly to scale
Where common sounds sit on the loudness scale
Capped here
Figures are commonly cited approximations for illustration, not laboratory measurements of this specific app. This app is a general sound amplifier, not a hearing aid or a medical device, and this is not medical advice.
What it does
Built around what actually helps
Loud-sound cap
Sudden spikes get capped automatically rather than blasting through at full amplified volume — the core reason this isn't a plain volume slider.
Voice separation
Speech gets pulled forward relative to background noise, instead of the whole recording getting louder together.
Three-band EQ
Bass, voice, and treble adjust independently, since a fixed profile suits nobody exactly.
No processing lag
Runs live on the device, with no noticeable delay between speech and hearing it amplified.
Offline by default
No connection required to boost sound — the internet only matters for the initial download.
Shared subscription
Up to 4 devices on one Premium plan via QR code.
How it works
Three steps, no account required
Connect headphones
Wired or Bluetooth, whatever's already around — nothing new to buy first.
Aim the phone
Toward whoever's talking, or toward a TV or speaker — the mic boosts in the direction it's pointed.
Adjust the level
Plus and minus controls appear the moment the boost starts, with a built-in ceiling on how far it goes.
Common searches
What people usually mean by "volume booster"
"Volume booster for phone calls"Usually means boosting a soft-spoken caller's voice, which works best through headphones rather than the phone's own speaker.
"Is a volume booster safe for your ears"Only if it caps output rather than boosting without limit — the scale above shows why that ceiling matters.
"Best volume booster app"Often really a question about which app separates speech from noise well, not just which one gets loudest.
"Volume booster without ads"The free tier here covers 3 real sessions a day with no account or intrusive ads to sit through.
Real feedback
Reviewed by real users, not by us
App Store
Read what iPhone and iPad users say after actually trying it, straight from Apple's own listing.
See App Store reviews →Google Play
Read what Android users say after actually trying it, straight from Google's own listing.
See Google Play reviews →FAQ
Questions about volume boosters
Is a volume booster bad for your hearing?
It depends entirely on whether it caps output. One that boosts without limit can push sound into a risky range with prolonged use. This app caps amplification automatically rather than letting it climb indefinitely.
Is this a hearing aid?
No. It's a general sound amplifier, not a regulated medical device, and not fitted to a diagnosed hearing loss.
Why does it need headphones instead of the speaker?
Playing amplified sound out of the same phone that's recording it creates feedback. Headphones avoid that loop entirely.
Is the free version actually usable?
Yes — three real listening sessions of 15 seconds each, every day, with no account required.
Does it need an internet connection?
No. Boosting runs entirely on the phone. A connection only matters for the download or an optional subscription.
Is any audio recorded or stored?
No. Sound passes through the app in real time and is never recorded, saved, or uploaded.
Can I share one subscription with family?
Yes — a Premium subscription covers up to 4 devices through a QR code.
Does it work on both iPhone and Android?
Yes, with the same core features on both the App Store and Google Play versions.
Louder, with a built-in limit
No account, no prescription, no hidden catch to the free tier.