Privacy Policy — Deep Sky Prospector

Last updated: September 23, 2026

Which app and developer this policy covers

This privacy policy applies to the following Android application and its developer, as listed on Google Play:

• App name: Deep Sky Prospector (referred to below as "the app" or "the game")
• Also listed on Google Play as: 深空探矿者 (Simplified Chinese) · 深空探礦者 (Traditional Chinese) · 深宇宙の探鉱者 (Japanese) · 심우주 탐광자 (Korean) · Prospector Estelar (Spanish) · Garimpeiro Estelar (Brazilian Portuguese) · Schürfer im Tiefraum (German) · Prospecteur du Ciel Profond (French) · Pendulang Antariksa (Indonesian). These are the same app, published from the same Google Play listing under the package name below; the store title and the launcher name are simply shown in the reader's own language. This policy covers all of them.
• Package name / application ID: com.yzy.deepskyprospector
• Google Play listing: play.google.com/store/apps/details?id=com.yzy.deepskyprospector
• Developer name (Google Play developer account): yzyy, an individual developer based in Singapore
• Contact email: yzyapps99@gmail.com

Deep Sky Prospector is an idle space-mining collection game: drones mine an asteroid belt while you are away, and a daily spectrometer reveal identifies the crystals they bring back for a species codex. This page explains what data the app handles and who it is shared with. The app is provided by yzyy, an individual developer based in Singapore ("we", "us").

Summary

• No account and no sign-in. The app never asks you for a name, an email address, a phone number, a photo or any other personal detail.
• Your game save never leaves your device. There is no cloud save, no leaderboard, no multiplayer and no server of ours for it to go to — we operate no servers at all.
• The app shows ads, and it collects the advertising ID to do so. There is one small banner on two of the game's screens, and one optional short video you can choose to watch for one extra scan (up to eight a day). Ads come from Google AdMob, which reads your device's advertising identifier to show and frequency-cap them. Where the law requires consent, you are asked before any ad is shown, and you can change that answer later under Settings › Privacy › Ad privacy options.
• There is one purchase: Pro. A single one-time payment, not a subscription. It removes the banner and unlocks four cabin decorations. It never sells luck — it lets you use the same eight extra daily scans everyone can earn from an optional video, without watching one; it adds no scan beyond that shared daily limit, changes no probability, and helps with nothing random in the game. Google Play handles the payment; no card, name, address or billing detail ever reaches the app.
• The app requests no runtime permissions — no location, no camera, no microphone, no contacts, no storage, no photos, no notifications.
• The app sends anonymous crash reports through Google Firebase so that defects can be found, and anonymous usage statistics so that the game can be improved. Usage statistics are your choice: in the EEA, the UK and Switzerland nothing is sent unless you choose "Allow" in the game's own prompt; elsewhere they are on by default. Everyone, in every country, can switch them off at any time under Settings › Privacy › Share usage statistics, and switching them off changes nothing in the game. Together with the advertising ID, the ad impressions and the Pro ownership answer above, that is the data collection — the complete list is in "What data the app handles" below.
• We sell nothing to anyone. Two things are shared, both with Google as the app's ad network: your advertising ID, and the fact that an ad was shown, clicked or watched to the end. Both are described below.

What data the app handles

The app itself asks for nothing about you: no name, no email, no account. Everything below is collected automatically by the Google services listed in the next section, and this list is complete. The first five entries are exactly the five data types ticked in the Data safety declaration on the app's Google Play listing — Crash logs, Diagnostics, App interactions, Device or other IDs (the installation identifiers and the advertising ID together) and Purchase history. The last two are named here for honesty rather than because Play has a box for them: an IP address is inherent to any internet request, and your consent answers exist only so you are not asked twice.

• Crash logs — if the app crashes or hits an error, a report containing the device model, the Android version and a diagnostic stack trace is sent so that the defect can be found and fixed.
• Diagnostics — basic performance, session and error information of the same kind (for example how long a session lasted, or that the app started).
• App interactions — collected, and partly shared. Coarse, aggregated counts of which screens and features are used, plus a short, fixed list of in-game events (for example that a scan was performed and which rarity it found), so that the game can be improved; these go to the analytics service only, are tied to a random installation identifier, not to a person, and follow your usage-statistics choice. The complete list is in "Usage statistics and your choice" below. An ad shown, clicked or watched to the end is also an app interaction, and that half goes to Google as the ad network — the second of the two things this app shares.
• Installation identifiers — a random, app-specific installation identifier (the Firebase installation ID and the analytics app instance ID) that lets the crash and analytics services tell one installation from another, so that a crash report and the events around it belong together. It identifies an installation, not a person, and it is discarded when the app is uninstalled. It is a different thing from the advertising ID in the next entry: Google Analytics for Firebase is configured not to read the advertising ID, and only the ad service does.
• Advertising ID — collected. The resettable advertising identifier Android provides. It is read by Google AdMob to select ads, to limit how often you see the same one, and to measure whether an ad led to an install. Where consent is required it is collected only after you agree. You can reset or delete it at any time in Android's own settings (Settings › Privacy › Ads), and you can opt out of personalised ads there. This identifier goes to Google as the ad network — one of the two things this app shares.
• Purchase history — collected. Whether the Google account on this device owns the one-time Pro product. Google Play tells the app the answer and the app stores that answer on the device so it knows whether to hide the banner and unlock the cosmetics. If usage statistics are on, the analytics service is also told that a Pro purchase completed or is pending, and from which screen — never the amount, the price, any payment detail or the order number. Purchase history is used for these two purposes, the game itself and analytics, and is not shared. No payment information reaches the app at all: the payment sheet is Google Play's own, running in Google Play's app.
• Your consent answers — if you are shown the ad consent form, your answers are stored on the device by Google's User Messaging Platform so you are not asked again, and reported to Google's consent service so ads respect them. Your usage-statistics answer (the game's own "Allow" / "No thanks" prompt, or the Settings switch) is stored on the device only: it is not sent anywhere and not included in device backups, because a consent answer belongs to the device it was given on.
• IP address — like any internet request, the crash and analytics uploads described above — and every ad request — carry the device's IP address to the Google service being contacted. An IP address can indicate approximate location such as a country or city; the app never requests, reads or transmits the device's GPS location, and holds no location permission at all.

All of it is transmitted over an encrypted connection (HTTPS).

Usage statistics and your choice

Usage statistics are collected by Google Analytics for Firebase. Crash reports are separate and are not affected by this choice.

• In the EEA, the UK and Switzerland, where the law requires consent, Google Analytics for Firebase collects nothing until you choose "Allow" in the game's own prompt ("Help improve the game?", with two equal buttons, "No thanks" and "Allow"). Closing the prompt without answering counts as no answer: nothing is collected, and you are asked again the next time you open the game. Events from before your answer are never sent.
• Everywhere else, usage statistics are on by default, once the app has confirmed at launch (through Google's User Messaging Platform) that consent is not required where you are. If that check cannot complete, for example when you are offline, they stay off for that session.
• Everyone can switch them off at any time under Settings › Privacy › Share usage statistics. Switching off stops collection immediately, and saying no — in the prompt or in Settings — changes nothing in the game.
• While the app is still checking at launch whether consent is required, a few events may be kept briefly in memory on the device (never saved to storage). They are sent only if usage statistics turn out to be allowed, and discarded otherwise — anything recorded before an answer you were asked for is never sent.
• Usage statistics are never used for advertising. The analytics service's advertising signals (ad storage, ad user data and ad personalisation) are switched off in every case, whatever you answer.

Besides the automatic usage statistics (for example that a session started or which screen was open), the game records these in-game events:

• opening the starter crate;
• the first haul collected;
• each crystal scan, with how it was unlocked (daily free scan, rewarded video, or Pro) and the rarity tier found;
• that a watched rewarded video granted its extra scan;
• that the rewarded-video offer was shown, with how many videos were already watched today as a range (none / 1–3 / 4–7) and whether it was the first offer of the day;
• each attempt to load a rewarded video and its result, as a category (loaded, no ad available, network, consent refused, timed out, other) and a time range (under 1 s / 1–3 s / 3–10 s / over 10 s);
• each tap to watch a video, with whether one was ready, and how the video ended (watched, closed early, failed to show);
• opening the Pro page, with which screen it was opened from and whether a price was available;
• a completed Pro purchase or a pending one, with which screen it came from.

Every value is one of a fixed list. There is no free text, no amounts, prices or order numbers, no identifiers of our own, and no numbers except the ranges above. One property is attached as well: whether this is the Google Play store build of the game or a tester build. Nothing new is shared with anyone: these events go to Google Analytics for Firebase only.

Your game save

Your progress — ore, crystals, the species you have identified, the pieces on your display case, your ship, decor and settings — is stored in the app's own private storage on your device, as a single local file. It is never uploaded to us, never sent to any third party, and nothing in it reaches the ad service. If Android's own device backup is enabled on your phone, Android may include that file in your personal Google backup under Google's terms, not ours. Uninstalling the app deletes the save.

Third-party services used by the app

The app includes the Google services listed below, which collect data independently of us and under their own terms. Google's handling of that data is described in Google's privacy policy at policies.google.com/privacy.

• Firebase Crashlytics — records the crash and error reports described above (stack traces and device state at the time of the crash).
• Google Analytics for Firebase — records the anonymous usage events described above, only as your usage-statistics choice allows (see "Usage statistics and your choice"). It is configured not to read the advertising identifier (google_analytics_adid_collection_enabled=false), and its advertising consent signals stay denied in every case: the advertising ID in this app is used by the ad service below, for advertising, and analytics data is never used for advertising.
• Google AdMob (Google Mobile Ads SDK) — serves the banner and the optional rewarded video, and reads the advertising identifier described above to select and frequency-cap them and to measure ad conversions. Google acts as our advertising partner here; how Google uses data in advertising is described at policies.google.com/technologies/partner-sites. The ad units will be configured to exclude gambling and casino advertising before any ad is served to a player — the game is rated 13 and over.
• Google User Messaging Platform — shows the consent form where privacy law requires one (for example in the EEA and the UK) and remembers your answer. Where that form applies, the "Ad privacy options" row under the game's Settings › Privacy re-opens it so you can change your answer. At launch the app also asks it, without showing anything, whether consent is required where you are; that answer decides whether usage statistics wait for your "Allow".
• Google Play Billing — handles the one-time Pro purchase and tells the app whether this account owns it. The payment itself happens inside Google Play; the app receives an ownership answer and nothing else.

One more thing belongs in this list, because it is attribution and calling it nothing else would be untrue: Google Analytics for Firebase reads the Google Play install referrer once, shortly after installation, through Google Play's own referrer service. It says which Play campaign or link the install came from. It is a one-time read and it carries no identifier of yours. Together with AdMob's own measurement of whether an ad led to an install, that is the attribution the app does.

Beyond that there is no ad mediation and no second ad network, no social or login SDK, no third-party attribution or marketing SDK (no AppsFlyer, Adjust, Branch, Facebook or similar), and no analytics service other than the one above. We can see the reports these services produce in Google's own dashboards, in aggregate form. We do not receive, store or have any way to look up an individual player's data, and we do not combine this information with anything else.

What the app does not do

• It does not sell or rent data to anyone. What it shares is named above and is only those two things, both with Google as the ad network.
• It shows no interstitial and no forced ad: the video is always your choice, and skipping it costs you nothing the free game does not already give you.
• It sells nothing that affects luck. Every player has the same daily limit — three free scans plus up to eight extra, eleven in all — and the Pro purchase only lets you take those same eight without watching a video. It adds no scan beyond that shared limit, changes no probability and touches nothing random; the game's odds are published inside the app, under Settings › Odds.
• It contains no subscription — Pro is a single one-time purchase, so there is nothing to cancel and no recurring charge.
• It never sees your payment details.
• It does not ask for or hold location, camera, microphone, contacts, storage or photo permissions.
• It has no login, no user profile, no chat, no friends list, no leaderboard and no user-generated content. Nothing you do in the game is visible to any other player.
• It does not track you across other apps or websites.

Children

Deep Sky Prospector is a general-audience game intended for players aged 13 and over. It is not directed at children under 13, its Google Play target-audience declaration excludes the under-13 age groups, it is not part of Google Play's Families programme, and we do not knowingly collect personal information from children. The advertising described above is aimed at that same 13-and-over audience. If you believe a child under 13 has used the app and that information about them was collected, email yzyapps99@gmail.com and we will act on it.

Data retention and deletion

The crash reports, anonymous usage events and advertising data are held by Google under its own retention settings and are deleted according to them; you can reset the advertising identifier yourself at any time in Android's Settings › Privacy › Ads, which breaks the link between past and future ad data. Your Pro purchase is a record held by Google Play under your Google account — we cannot delete it, and deleting it would take away something you paid for. We keep no separate copy of any of it and we have no database of our own. Switching off Settings › Privacy › Share usage statistics stops further usage statistics; uninstalling the app deletes your local game save and stops all further collection.

You may ask us what has been collected about your installation, or ask us to delete it, by emailing yzyapps99@gmail.com. Apart from the Pro purchase, which Google Play holds against your Google account, none of the data described above is tied to a name or an account — so please tell us the approximate date and the device model, and we will ask Google to locate and delete the matching records. We will reply within 30 days.

Changes to this policy

We may update this policy from time to time. Any new version will be posted on this page with an updated "Last updated" date, before the change it describes takes effect.

Contact

Questions about this policy: yzyapps99@gmail.com — yzyy, Singapore.