Last updated: 21 October 2026 · Version 2026-10-21.1
About Evennight
Evennight is operated by SolumSelen Studio Ltd, registered in England and Wales, company number 17161794. Our registered office is 71–75 Shelton Street, Covent Garden, London, WC2H 9JQ, United Kingdom. These terms describe use of the Evennight app and website. Contact support@evennightapp.com with questions before using it. Telephone: +1 541-350-1722.
What the app can do
Evennight plays masking sound through a phone speaker. Adaptive mode uses nearby sound to adjust its output; Steady mode plays a continuous sound. It cannot remove outside noise, reliably predict every noise event, guarantee uninterrupted operation or guarantee sleep improvements. Results depend on the phone, its placement, the room, the sound and the user. Calibration does not establish a medically safe volume or guarantee alarm audibility.
Safety comes first
Use the lowest comfortable volume. Never use a level that prevents you from hearing a smoke alarm, carbon-monoxide alarm, warning, another person or an emergency. Adaptive sound can rise: check that important sounds remain audible at the highest level you intend to use. Stop if sound causes discomfort or reduces necessary awareness. Follow the full safety information and your device manufacturer’s instructions.
Evennight is not an alarm, baby monitor, security system or emergency-detection service. Do not use it where masking could put you or another person at risk, including while driving, operating machinery or supervising someone whose calls you need to hear. Keep phones and chargers uncovered and away from bedding.
General wellbeing, not medical care
Evennight is not a medical device and does not diagnose, treat, cure or prevent a medical condition. Website research describes the studies cited; it does not establish a clinical benefit for Evennight. Seek qualified medical advice for persistent sleep or hearing concerns.
Permission to use the app
You may install and use a lawfully supplied copy for personal use on your own compatible Android device. Evennight’s branding and original app and website materials remain protected by applicable intellectual-property law. Do not misrepresent the app as your own, distribute modified copies under our name or use the service unlawfully. Rights granted by open-source licences or by law are unaffected.
Your phone and other apps
You control the phone’s media volume. Calls, other audio, power management, system updates, device faults or output changes may interrupt masking. Check your settings before each session. When a parent or carer uses Evennight while a child rests, that adult should control setup, volume and purchases. Evennight is not designed to monitor or protect a child or vulnerable person, or detect emergencies.
Privacy
Microphone audio is processed on the phone and is not recorded or uploaded by Evennight. Saved settings and presets remain local. Our privacy policy explains the app, website and support email.
Private previews and launch availability
Availability depends on your country and the release you are using. Separately labelled private previews may provide temporary testing access with purchasing disabled; these versions do not start a subscription or promise permanent free access. The subscription terms below apply when you choose an offer in a purchase-enabled version. Google Play displays the applicable offer, price and renewal terms before you confirm. These terms alone do not authorise a charge.
Subscription plans, all features
The trial, monthly subscription and annual subscription include the same features: Adaptive and Steady sound, guided calibration and three named presets. A subscription is required to use Evennight. There is no permanent free feature tier. Available plans depend on your Google Play country. A compatible Android phone with a speaker is required; Adaptive and calibration also need microphone permission. No separate Evennight account is required. App and help are currently available in English.
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.
Trial, payment and automatic renewal
Eligible new subscribers can receive 14 days free on an available monthly or annual plan, then pay the local price of the selected plan. Google Play determines eligibility. Using a trial on one plan does not entitle you to another trial on the other plan. The local price, billing period, any applicable tax and trial eligibility shown in Google Play before confirmation govern your purchase. If Google Play does not offer a trial at checkout, payment is due when you confirm. Review the first charge date before confirming; you can close checkout without subscribing.
A trial starts when Google Play confirms your trial subscription, not when you install the app. Unless you cancel before the trial ends, Google Play charges the selected plan price when the trial ends. Monthly plans automatically renew and charge every month; annual plans automatically renew and charge every year. Renewal continues until you cancel. A pending payment does not grant access until confirmed. Google Play presents the offer and obtains your purchase confirmation. Adding a monthly option does not change an existing annual subscription.
Cancellation, refunds and changes
Cancel in Google Play before the trial ends to avoid the first charge, or before your next renewal to avoid the next charge. Use Evennight’s Plan & purchases screen to manage your subscription, or open Google Play → your profile → Payments & subscriptions → Subscriptions → Evennight. You normally retain access until the end of the confirmed trial or paid period after cancelling renewal. Uninstalling the app or clearing its storage does not cancel your subscription.
Refunds and statutory cancellation rights depend on the applicable Google Play policies and law. See Google Play’s refund guidance or contact support@evennightapp.com for help. We do not promise a refund for every unused period or limit any refund or remedy required by law. Any future price change will be handled through Google Play’s notices and consent requirements; it does not silently change an already paid period.
Restoring access and using sound offline
Use the Google Play account used for the purchase and choose Restore / check purchases after reinstalling or changing devices. Internet access and Google Play are required for purchase, restoration and subscription checks. After successful verification, sound works offline until the earlier of the confirmed access period ending and 30 days since the last successful check. After restarting your phone, connect again so access can be checked before beginning a new session. Connect again to verify a renewal or restore access. An unsuccessful network check does not by itself remove access already confirmed within that limit on the same phone boot. If a device cannot reliably identify a restart, an app restart also requires a fresh access check.
When access expires, starting another sound or calibration session requires renewed confirmation. Your saved presets, Stop, safety information and subscription-management controls remain available. Billing does not stop an already-running sound session or change its mode. Other phone events can still interrupt sound, as described above.
Issued access codes
We may issue complimentary access for an agreed purpose, including app review or testing. Redeeming an issued code gives the same app features and does not start a subscription, trial charge or automatic renewal. Internet is required to validate and periodically recheck the code. Availability and duration are those confirmed when access is issued; a code is not a public free tier or a promise of permanent access.
Responsibility and your legal rights
Please use the app with reasonable care and follow its safety information. We do not promise that the app will suit every environment, detect every sound or operate without interruption. To the extent permitted by law, we do not provide additional guarantees beyond those expressly stated.
Nothing in these terms excludes or limits rights or remedies that cannot lawfully be excluded, including applicable consumer rights or liability for fraud or death or personal injury caused by negligence. Accepting a safety notice does not waive those rights. Any remaining responsibility is determined under the law that applies to you.
Changes and contact
We will date updated terms and make them available in the app or on this website. Material changes will be brought to your attention before they apply to your future use. Changes do not retrospectively remove accrued rights. For support, safety reports or questions, contact support@evennightapp.com.