This Privacy Policy explains how Signet (the “App”), published by
Nyxelium (“we”, “us”, “our”), handles information when you use the App. Signet is an
on-device batch photo watermarking app for Android (package com.nyxelium.signet).
Signet needs access to content you deliberately select in order to provide its watermarking features. This content remains on your device:
Signet does not upload source photos, previews, watermark text, logo files, drafts or exported images to Nyxelium.
Signet uses Android system pickers so you decide which photos or files the App may read. It does not request broad access to enumerate your entire photo library and does not request “all files” access.
Selected media is treated as read-only. Signet may make an app-owned working copy while a draft or export is active. Temporary files are used only to complete that job and are not repurposed for advertising, analytics, profiling or machine-learning training.
Every successful export is a new file. Signet does not overwrite or alter your original photo. You can save exported files to Android’s shared media collection, where compatible gallery apps can show them, or to a folder you select through Android’s system folder picker. Folder access is limited to the destination you grant, and Android may retain that permission for later exports. You can choose a different destination or revoke access through Android’s controls.
If you choose to share an export, Android’s system share interface lets you choose the receiving app or person. Signet grants the receiving app temporary read access to the selected export. That transfer is initiated and controlled by you. The receiving service handles the file under its own privacy policy.
The current disabled-diagnostics build does not send Signet app-usage or diagnostic data. In a build that supports remote diagnostics, collection is off by default and starts only after you turn on Remote diagnostics in Settings. This choice is optional worldwide; photo selection, editing and export work without it. You can turn it off in Settings to stop future collection. Turning it off does not erase information already sent.
When you opt in, we use Google’s Firebase Analytics, Crashlytics and Performance Monitoring to understand app use, diagnose failures and improve reliability. Information may include:
Signet’s custom telemetry uses reviewed categories and ranges. It does not include your photos, thumbnails, watermark text, logos, filenames, paths, folder names, content URIs, EXIF/GPS values or other media content. Vendor SDKs also process technical information under their own documented behavior; the custom-event allowlist does not describe every SDK transport field.
Signet has no login, advertising, subscription or in-app purchase in the initial release. We do not request advertising-ID access, enable advertising consent or use diagnostics to personalize advertising. We do not operate cloud media processing or media backup. Google processes diagnostics for these services and may process information outside your country under applicable safeguards; see Firebase privacy and security information and Google’s Privacy Policy.
If you email support, we receive the email address, message and any attachments you choose to send. We use them to respond, investigate the reported issue and handle privacy requests. Do not send private photos, logos or metadata unless a sanitized sample is necessary and agreed with support.
Google Play and Android may process information independently to distribute, secure and operate apps. Opening our policy or support website in your browser is also separate from Signet’s optional in-app diagnostics.
| Access | Why Signet uses it |
|---|---|
| System photo/file picker | To read only the photos and logo files you deliberately select. |
| Shared media collection | To save the new JPEG or PNG copies you ask Signet to create. |
| Selected destination folder | To create exports only in the folder you grant through Android’s system picker. |
| Foreground export service | To keep an active export running when Signet is backgrounded. Android manages its status notification and may still terminate work under resource pressure. |
| Network access | For optional remote diagnostics when supported and enabled. Core media processing stays on-device. |
The production release does not request location, contacts, camera, microphone, advertising ID, broad photo-library or all-files permissions.
Photo metadata can contain sensitive information, including location or device details. Signet removes metadata by default where supported. If an export option explicitly lets you preserve supported metadata, the resulting file may include those values. Signet does not transmit those metadata values to Nyxelium.
Drafts, app-owned working copies and preferences remain locally only for as long as needed by the App’s workflow or until you remove them, clear Signet’s storage or uninstall the App. Exported files remain in the destination you selected until you delete them using Android or another file-management app.
Because Nyxelium does not receive this local media through the App, we cannot retrieve, restore or remotely delete it for you.
For builds with optional diagnostics, our launch retention policy is two months for Analytics event/user-level data, without extending that window on new activity. Aggregated Analytics reports are not subject to that event/user retention window. Google’s documented service retention is 90 days for Crashlytics crash traces and associated identifiers, 30 days for IP-associated Performance events, and 60 days for installation-associated or de-identified Performance data, before removal from live and backup systems begins. See Firebase retention details and Analytics retention controls. These service windows do not apply to your local photos.
Turning diagnostics off, clearing local app storage or uninstalling Signet does not by itself delete diagnostics already held by Google. You may request deletion using the email below. We will use the provider’s supported tools for records we can identify and explain any identification or service limitations. Signet has no account, and your email address alone cannot identify a pseudonymous installation; the current App does not display that installation identifier. Do not send photos or other private content to establish identity.
Support correspondence is kept while a request is active and normally removed within 90 days after resolution, unless a longer period is needed for a legal obligation or an unresolved dispute.
Signet relies on Android’s application sandbox, system content interfaces and scoped media storage to limit access. Device backups and device-to-device transfer of Signet’s private working data are disabled in this release. No method of local storage is completely risk-free, so keep your device and operating system protected and up to date.
Signet is intended for photographers, creators, online sellers and other general productivity users. It is not directed to children under 13, or the equivalent minimum age in the user’s country, and we do not knowingly collect personal data from children.
Depending on where you live, privacy law may provide rights over personal data. Most Signet content stays only on your device, where you control it directly. You can ask about access, correction, deletion or other applicable rights using the address below, including for support correspondence or optional diagnostics. We may need limited additional information to identify the relevant records. Where applicable, you may also complain to your local data-protection authority.
We may update this policy when Signet’s features, service providers or legal requirements change. We will update the date at the top of this page and provide additional notice where required. We will revise this policy and the applicable store disclosures before enabling advertising, purchases or changing the scope of remote diagnostics.
For privacy questions or deletion requests, email us with the subject Signet privacy request. Include the app version and the kind of data concerned; do not include private media:
Nyxelium
Email: kowalski.dev07@gmail.com