Last updated: 28 September 2026 · Version 2026-09-28.1
Who is responsible
Evennight is operated by SolumSelen Studio Ltd, the controller responsible for the personal information we handle. We are registered in England and Wales, company number 17161794. Our registered office is 71–75 Shelton Street, Covent Garden, London, WC2H 9JQ, United Kingdom. For privacy questions or requests, contact support@evennightapp.com.
Versions covered by this policy
This policy covers Evennight’s Android app and website. Some separately labelled preview builds have purchasing disabled. Where Google Play purchases or issued access codes are enabled, the purchase and access-check sections below apply.
What Evennight does
Evennight is an Android sound-masking app. Adaptive mode uses the phone microphone to notice changes in nearby sound and adjust the masking output. Steady mode plays continuous masking sound without microphone access.
Microphone audio
In Adaptive mode, microphone audio is processed as it arrives on the device. Evennight does not make or keep an audio recording, transmit microphone audio from the device, or share it with another party. You can use Steady mode without granting microphone permission.
Information stored on the device
Evennight stores settings needed to operate the app, including named calibration presets, calibration measurements, the selected mode, safety-notice acceptance and a small amount of session status. This information remains in the app’s private storage on the phone.
Purchases and access checks
Where purchases are enabled, Google Play handles the trial, payment, renewal and cancellation. The app sends a purchase token over an encrypted connection to our verification service. We use that token to ask Google for the subscription product, status and expiry and to confirm completed purchases. A token is a reference to a purchase; it is not a payment-card number. Our app does not receive your card or bank details. Google may provide transaction details in its publisher tools when needed for accounting, refunds or customer support.
Google also sends subscription-change notifications to our service so a completed purchase can be confirmed even while the app is closed. Google remains the source of the subscription status. The app keeps its purchase reference and last confirmed access result in private storage excluded from Android backup. None of these requests contains microphone audio, calibration measurements, preset names or a sleep record.
If we issue you a complimentary access code, the app sends that code to our service to check it. The code is not saved on the phone; the app keeps only the confirmed access result, and you enter the code again when a new check is needed. It does not create a Google Play subscription or authorise a charge. Server configuration holds a protected representation of issued codes; we do not put a working access code in the app or public website.
Verification records and retention
Our verification service does not keep a database of bedroom activity. Its notification inbox may temporarily hold an encrypted purchase token while a subscription notification is processed or retried. The token is removed when processing finishes or retries are exhausted. Scheduled cleanup removes any remaining token once its inbox record is seven days old. Minimal processing records, including protected purchase references, message references, times and outcomes, are scheduled for deletion when they are 30 days old. These records help prevent duplicate processing and investigate delivery failures. If the cleanup service is unavailable, overdue records are removed when it resumes.
These periods apply to our notification inbox. Google’s notification-delivery services and its purchase, payment and diagnostic records have separate retention rules. Deleting Evennight does not delete Google’s records or cancel a subscription.
Our billing endpoints do not routinely log request or response bodies. Hosting and security systems process network addresses to deliver and protect the service. Request-rate limits use operational counters held in server memory; we do not use those counters to estimate your location. We also keep limited operational information, such as processing totals and service errors, to maintain the service.
Issued access-code configuration is retained while the code is valid or needed for its agreed purpose. Contact support if you need help removing information we hold.
Offline use, Google services and advertising
Masking and sound analysis work on the phone. Where purchases or issued access codes are enabled, internet access is needed for purchase, restoration and occasional access checks. The subscription terms explain how long confirmed access remains available offline. There is no separate Evennight account or advertising service. We do not sell personal information.
Google Play Billing sends technical diagnostics to Google. These include information about billing requests and connection problems, app and Android versions, the device model and related technical and network information. A randomly generated identifier links related billing diagnostic events from the running app. Google uses these diagnostics to diagnose and improve its billing services. This information is separate from microphone audio, calibration measurements and sleep records, which Evennight does not send to Google.
Google’s processing is covered by Google’s privacy policy. Local sound processing does not mean that a purchase-enabled app has no network activity. We do not claim a specific retention period for Google’s billing diagnostics.
Website statistics and your choice
Our hosting provider, Hetzner, receives your IP address and ordinary request information to deliver this website. On the same server, we count page requests and use a locally stored country database to estimate the country of the network making the request. This helps us understand which pages are useful and where interest in Evennight comes from. A network’s country can differ from your location, for example when using a VPN.
We keep daily totals by page and country for up to 13 months. From 6 October 2026, we also count requests to the homepage’s three Google Play links by date and button position, alongside homepage views collected over the same period. Repeated clicks can add to these totals; they are not counts of people or downloads. These totals are kept for up to 13 months. From 28 September 2026, we also count homepage requests and new launch signups by a small set of recognised campaign labels, such as our Meta video advertisement. We discard other query information, including advertising click identifiers. These campaign totals are kept for up to 395 days. We do not store IP addresses, browser details or individual visit histories in the statistics database, create visitor identifiers, or send visitor IP addresses to an external location service. These are counts of page views and link requests, not identified people. There are no advertising trackers or analytics cookies. Website statistics do not receive app sessions, purchase tokens or microphone information.
You can exclude your browser from website statistics using the controls at evennightapp.com/privacy#website-statistics. At your request, we store a preference cookie for one year to remember your choice. You can change it here at any time. We also exclude requests carrying Do Not Track or Global Privacy Control signals. Clearing cookies removes the saved choice; it applies separately to each browser.
Country estimates use IP Geolocation by DB-IP. The statistics are available only through our private dashboard. Routine visitor access logging is disabled for this site; separate technical fault or security records may be retained while an issue is investigated.
Launch email requests
If you enter your own email address and tick the launch-notification box, you give SolumSelen Studio Ltd permission to send one email when Evennight becomes available on Google Play. This is optional and does not sign you up to a newsletter, a trial or a paid subscription. The website confirms that your request was saved; it does not currently send a confirmation email or verify ownership of the mailbox.
We store your email address, request time and the wording version you agreed to in a private database on our Hetzner server. If website statistics are allowed, we also save a recognised campaign label from the page where you submitted the form. We do not store the full referring URL or advertising click identifiers. Your email is not sent to Meta or added to advertising audiences.
We use your consent to send the launch message. You can withdraw it by emailing support@evennightapp.com from the address you submitted; withdrawing does not affect processing already carried out. We remove pending requests after 90 days, or within 30 days after marking the launch email as sent. On withdrawal we erase the address and keep a protected representation only until the original 90-day expiry, to prevent an accidental repeat signup. Routine cleanup runs daily and when the service is used.
To protect the form, we use a hidden spam field, duplicate checks and short-lived rate-limit counters. The rate limiter processes the network address into a protected token that changes each day; counters are removed within two days. Raw addresses are not saved in the launch database. These controls serve our legitimate interest in preventing abuse and are separate from optional website statistics. Email delivery uses our email providers when the launch message is sent; the arrangements are described below.
Support email and service providers
If you email support, we receive your email address, message and any attachments you send. Email delivery providers process those messages to deliver and store them. Please do not send bedroom recordings, passwords or sensitive health information. Support information is used to answer your request and investigate reported problems, and is kept only while needed for that purpose or a related legal obligation.
Our website is hosted by Hetzner on a server in Helsinki, Finland. Finland is covered by UK adequacy regulations. Support emails are forwarded through Porkbun, a US provider. Porkbun describes its processing and international-transfer safeguards in its privacy policy. Google processes purchase and technical information internationally under its privacy policy and published transfer frameworks. Contact support@evennightapp.com for further information about the arrangements relevant to your information. Links to research and other websites open services governed by their own privacy policies.
Why we use information and your choices
We use purchase and access information to provide the service you request and perform our contract with you. We use limited verification and security records for our legitimate interests in preventing fraud and keeping access reliable. Where required, we retain relevant transaction records to meet legal accounting obligations. Purchase verification is necessary for subscription access; sending a support request is optional.
Where data-protection law requires a lawful basis, we rely on our legitimate interests in operating a secure website, understanding aggregate website use and responding to support requests. Website statistics use only the minimum request information needed to produce totals, without identifying visitors; you can object using the controls above or by contacting us. Providing a support message is optional. We do not sell personal information or make automated decisions with legal or similarly significant effects.
Depending on the law that applies to you, you may request access, correction, deletion, restriction or portability of information we hold. You may also object to processing based on legitimate interests. Contact support to exercise these rights. You can complain to your local data-protection authority, including the UK Information Commissioner’s Office where applicable.
Deleting app information
You can remove saved presets within Evennight. You can remove all locally stored information by clearing the app’s storage in Android settings or uninstalling the app. We cannot view or remotely remove your local presets or microphone input. To request deletion of support or verification information we hold, email support@evennightapp.com. We may need to confirm that the request concerns you and retain information necessary for an unresolved transaction, dispute or legal obligation. Do not send access codes, purchase tokens or payment-card details by email.
Permissions
Adaptive mode requests microphone access. Android notification and foreground-service permissions allow an active masking session to continue when the screen is locked and provide a visible control for the session. Wake-lock access helps prevent Android from suspending an active session.
Children
Evennight does not record or share microphone audio, including when it is used in a room where children are present. A parent or carer should control setup, volume and purchases when using Evennight while a child rests. The app does not monitor children or detect emergencies. Keep emergency sounds audible.
Changes to this policy
If a future version adds accounts, analytics, online services or other data use, this policy and the disclosures in the app will be updated before those features are released.
Contact
Questions about privacy can be sent to support@evennightapp.com.