30 seconds · Silent, with on-screen captions
When the street feels like it’s in the room.
A bus, a passing conversation, a bedroom that feels anything but quiet. A little Evennight story about sound that responds.
Built for changing nighttime noise
A quieter night,
using the phone beside you.
Evennight creates a calm masking sound and can gently adapt when traffic or other noise changes. No extra speaker or separate Evennight account. Sound processing works on your phone.
Android · Phone speaker · Works with the screen locked
Now on Google Play · 14-day trial for eligible new subscribers
A little sound. A calmer night.
Meet Evennight.
A quick look at the app and how its sound responds.
28 seconds · Silent, with captions
Noise rises. Evennight responds.
A car, a bus, a passing conversation. Watch the lines show how masking sound can rise and settle as nearby noise changes.
Illustrative response, not measured performance. Results vary with the sound, phone and room. Read the research.
A simple bedtime tool
Sound that follows the room.
Evennight is designed for noise that rises, fades and returns. Choose a responsive masker or a steady sound for your room.
01
Adaptive
Listens for changes around the phone and gently adjusts the masking sound. Audio is analysed live on the device and is not recorded.
02
Steady
Continuous masking when you prefer a fixed sound. Steady mode does not need microphone access.
My bedsideGuest roomHotel
03
Calibrated for your place
Save up to three named setups for your bedside, a guest room or travel. Reuse them without recalibrating every night.
Illustration of the two modes, not measured sound levels. Actual response varies with the sound, phone and room.
Sound masking and sleep
How masking sound can support sleep.
A passing car can stand out sharply against a quiet room. A gentle background sound can soften that contrast, making the disturbance less noticeable. This is the principle behind sound masking.
Watch how the sound responds →
Why the rise of a passing car matters
Researchers monitored 40 people at home for five nights and analysed 11,003 vehicle pass-bys. Awakenings were more likely when traffic sounds peaked higher or rose more quickly. This measured traffic noise, rather than a masking treatment.
Sanok and colleagues · Science of the Total Environment, 2022Published studies have found that masking sound can reduce sleep disruption in noisy settings. In a study of ten adults living with environmental noise in New York, participants spent less time awake after falling asleep during the white-noise week, according to wrist-monitor estimates. They also reported falling asleep sooner. [1]
Laboratory research helps explain why. In a small study, adding mixed-frequency white noise reduced brief sleep arousals caused by recorded hospital noise. Researchers linked the benefit to a smaller difference between the background sound and the noise peaks. Four people completed all three conditions. [2]
The broader evidence includes a 2025 review of twelve randomised trials involving 1,301 people across age groups. It found improved self-reported sleep-quality scores in adult and older-adult groups using white noise, although results varied substantially between studies. [3]
This research informs Evennight's approach: a gentle background sound that can respond as nearby noise rises, aiming to make passing traffic less intrusive. The studies support the principle of masking; they did not test Evennight or its adaptive response.
Sound choice and volume matter. Benefits are not consistent across all studies: a 2026 laboratory trial found that continuous pink noise reduced REM sleep at the levels tested, despite some reduction in noise-related fragmentation. [4] Added sound can itself disturb sleep. Use the lowest comfortable volume and keep alarms audible.
Read the research
- Ebben, Yan & Krieger. White noise and sleep in noisy New York homes. Sleep Medicine, 2021.Ten adults; fixed testing order; partly funded by the sound-machine manufacturer.
- Stanchina and colleagues. White noise and sleep during recorded ICU noise. Sleep Medicine, 2005.
- Ding and colleagues. White noise and sleep quality: a review of randomised trials. Sleep Medicine, 2025.
- Basner and colleagues. Pink noise and earplugs during environmental noise. Sleep, 2026.
Now on Google Play
Meet your new bedtime routine.
Evennight is live. Get gentle, responsive sound masking on your Android phone, for home or wherever the night takes you.
Try every feature free for 14 days if eligible, then continue with your chosen subscription. Monthly plans are currently available only in the UK (£1.49/month) and US (US$2.00/month). Annual plans are £7.99/year in the UK and US$9.99/year in the US, and remain available at local prices in Australia, Canada and New Zealand.
Google Play confirms your local price, trial eligibility and first charge date before you subscribe. Plans renew automatically monthly or yearly unless cancelled. Installing Evennight does not start a trial or charge you. Cancel through Google Play.
Get Evennight on Google Play
Choose Adaptive mode for changing noise, or Steady for a fixed masking sound. Optional calibration helps you set up your phone for the room.
Need a hand getting started? Visit our support guide.
Quiet by design
Your bedroom stays private.
Works offlineMasking works offline. The subscription release needs internet for purchases and occasional access checks.
Processes locallyAdaptive analysis happens on the phone as sound arrives.
Keeps no recordingsBedroom audio is not saved, uploaded or shared.
Always stay aware
Keep alarms and important sounds audible.
Use the lowest comfortable volume. Never set Evennight so loud that you could miss a smoke alarm, warning, person or other emergency sound.