Most sleep apps guess.
RoomTone listens first.
Tap Match My Room and RoomTone analyzes your bedroom’s actual acoustics in five seconds — then plays a sound genuinely shaped to it, instead of the same loop everyone else gets.
Free forever tier · Premium $19.99/yr or $2.99/mo · First week free
From dead air to a sound shaped for your room
No setup, no account, no calibration wizard — the whole process takes about as long as reading this sentence.
Tap Match My Room
RoomTone listens for five seconds using your phone’s microphone — nothing is recorded or sent anywhere.
It reads the room
Your room’s frequency profile — rumble, hiss, hard surfaces, soft ones — is measured and turned into a spectrum, live on screen.
Get your match
RoomTone points you to the closest sound in the library, or shapes a custom mask built specifically for what it just heard.
Two ways to fit the sound to the space
Closest Match finds the take in RoomTone’s library that already fits your room. Custom Match goes further, synthesizing a mask built from your room’s own measurements — for the rooms nothing in the library quite covers.
- Re-measure any time your room changes — new mattress, new curtains, new apartment
- Save as many custom masks as you like
- Your last mask keeps playing even without a subscription
The microphone is off unless you ask it to listen
No background listening, no cloud processing, no account tied to a server somewhere. Each capture is a few seconds, analyzed on your device, then discarded — the same standard we hold ourselves to — see exactly how RoomTone handles your microphone.
- Audio is never written to storage or transmitted
- iOS’s own orange mic indicator confirms every capture
- Works fully offline once installed
Nine sounds. Five tonal takes each.
Every sound runs from deep rumble to bright — so when the first take doesn’t fit your room, the fix is a tone adjustment, not a different app.
Most sleep sound apps personalize to you. RoomTone personalizes to your room.
Where the difference actually is
BetterSleep leans on a large content library. Endel personalizes to your time, activity, and sometimes biometrics. RoomTone does neither — it measures the acoustic space you’re actually sleeping in.
Read the full comparison →The full library is free. Premium unlocks unlimited matching.
- All 9 sounds at their default take
- Sleep timer & background playback
- A few free Match My Room uses
- No account, ever
or $2.99/mo · first week free
- Unlimited Match My Room
- All 5 tonal takes per sound
- Unlimited saved custom masks
Guides on the sound and science behind sleeping well
How Loud Should White Noise Be for Sleep?
The decibel ranges that actually make sense by room, and how to check yours.
Sleep ScienceDoes White Noise Help with Tinnitus?
What sound masking actually does — and why the right sound varies by person.
Sleep ScienceWhite Noise for Baby Sleep: A Parent’s Safety Guide
Safe volume and placement for a nursery, with real numbers to check against.
Stop guessing what your room needs.
Five seconds of listening beats another night with the wrong loop playing at the wrong volume.
Get RoomTone free →