Last Updated: August 20, 2026
Elemental Days is a daily element-combining puzzle game built and operated by DevX100 ("we," "our," or "us"). This Privacy Policy is specific to Elemental Days and explains what information it does — and does not — collect. It applies to Elemental Days wherever you play it, including the web version and any mobile app version distributed through an app store. For DevX100’s general website, see our main Privacy Policy.
Elemental Days does not have an account system and never asks for your name, email, or any personal information directly. Your game progress — discovered elements, move history, streaks — is saved only in local storage on your own device; we never see it or receive a copy of it. The one exception to “we collect nothing” is advertising: Elemental Days shows ads through Google AdMob, and AdMob collects an advertising identifier and some device information in order to serve those ads. We do not run any analytics or tracking of our own, and none of our own code makes a network call — the only data leaving your device goes to Google, through its AdMob SDK, for the purpose of showing you ads. Section 4 below explains exactly what that involves.
We — DevX100, directly — collect no personal information. Elemental Days has no login and no forms, and none of our own code sends data to any server we operate. The only data our code creates is stored locally on your device via your browser’s or app’s local storage, and consists entirely of:
None of this identifies you personally, and none of it is sent to us. Separately, the Google AdMob SDK embedded in the app collects its own information in order to serve ads — that collection is described in full in Section 4, “Advertising.”
Elemental Days is supported by ads served through Google AdMob. AdMob is a third-party advertising SDK, not something we built, and it collects certain identifiers directly from your device — independently of our own code — in order to select and deliver ads. This is the one place where information about you does leave your device.
Specifically, on the mobile app version, the AdMob SDK requests:
Along with the advertising identifier, Google’s SDK may also collect general device and app information (such as device model, operating system version, general location derived from IP address, app version, and ad interaction events) as part of normal ad serving. This collection is performed by Google’s SDK code running inside the app, governed by Google’s own privacy practices — not by any server we operate. You can review how Google collects and uses this data in the Google Partner Sites/Apps Privacy & Terms and Google Privacy Policy.
You can limit this collection at the device level: on Android, go to Settings → Privacy → Ads to opt out of personalized advertising or to reset/delete your advertising ID. Doing so does not stop ads from showing, but limits how they’re targeted.
Elemental Days’ own code does not set cookies and does not run any first-party tracking, fingerprinting, or analytics. On the web version, the hosting provider serving the page may keep standard, aggregate server access logs (such as IP address and request time) for security and reliability purposes — this is infrastructure-level logging common to all web hosting, not something Elemental Days itself collects. On the mobile app version, the advertising identifiers described in Section 4 serve a role similar to a cookie, but that collection is performed by the Google AdMob SDK, not by us.
The only third-party service integrated into Elemental Days is Google AdMob, used to serve in-game ads (see Section 4 for exactly what it collects). We do not currently integrate any analytics, crash-reporting, or other advertising SDKs beyond AdMob. If that changes, we will update this policy before the change ships, and describe exactly what the new service collects and why.
We don’t share or sell any of the local game data described in Section 3, because we never receive it — it stays on your device. The advertising identifiers and device information described in Section 4 are collected directly by Google’s AdMob SDK and shared with Google for the purpose of ad delivery and measurement; under some state privacy laws (such as the CCPA/CPRA’s definition of “sharing” for cross-context behavioral advertising), this may be treated as a disclosure for advertising purposes. Beyond what AdMob itself collects for ad serving, we do not sell or share your information with anyone.
Because the local game data described in Section 3 never leaves your device, there is nothing on our servers to secure, breach, or subpoena for that data. Information collected by Google’s AdMob SDK is protected under Google’s own security practices, which are outside our control.
Your local game progress lives entirely in your browser or device storage, and you are always in full control of it. Clearing your browser’s site data for this page (or uninstalling the app, on the mobile version) permanently and immediately deletes all of it — there is no account to close and no request to file. To limit or reset the advertising identifier collected by AdMob, use your device’s ad settings as described in Section 4.
Elemental Days is designed to be playable by a wide age range, including players under 18. We do not knowingly collect personal information from any player of any age directly. Because the app serves ads through Google AdMob, we configure and tag our ad requests in accordance with Google’s policies for child-directed treatment and applicable laws (such as COPPA) where relevant, which limits or disables personalized advertising and certain data collection for those requests. Parents or guardians with questions about advertising on this app are welcome to contact us using the details below, or to use their device’s ad settings to opt out of ad personalization.
The native mobile build requests the advertising-related permissions described in Section 4 (AD_ID, ACCESS_ADSERVICES_AD_ID, ACCESS_ADSERVICES_ATTRIBUTION) solely so the Google AdMob SDK can serve and measure ads. It may also request minimal device permissions such as vibration/haptic feedback on supported devices, solely to enhance game feel. None of these permissions are used by our own code to collect, store, or transmit information about you.
If Elemental Days’ data practices change — for instance, if we add optional cloud sync, analytics, or additional ad or SDK partners in the future — we will update this page and change the “Last Updated” date above before that change takes effect.
Questions about this policy or about Elemental Days? Reach out: