Privacy Policy — Battery Alarm

Effective date: 27 September 2026  ·  Last updated: 27 September 2026  ·  App package: com.battwise.batteryalarm

1. Who is responsible for your data

Battery Alarm is published on Google Play under the developer name shown on the app's Play Store listing. In this policy, "we", "us" and "the developer" mean that publisher, who is the data controller for the limited processing described here. You can reach us at any time at support@teknicalengineers.com.

For the advertising data described in section 4, Google acts as an independent controller of its own under its own privacy policy — we never receive that data in a form that identifies you. For the purchase described in section 5, Google Play processes your payment under its own terms and privacy policy.

2. What leaves your device, at a glance

We do not operate any server that receives your data, and we do not sell your personal information for money.

3. Data stored locally on your device

To do its job, the app saves the following only on your own device:

• Your alarms and settings — target percentages, ringtones you picked, theme, temperature unit, and similar preferences.
• Charging history — start/end time and battery percentages of your charging sessions, so the app can show them to you.
• Battery-level log — the battery percentage and whether a charger was connected, recorded when they change (and at least every half hour), kept for 7 days and then discarded automatically. It is used only to calculate how much battery your phone used, for the "Battery use by app" screen.
• Optional anti-theft PIN — if you set one, it is stored only as a salted SHA-256 hash, never as plain text.
• Ad-free status — whether you bought "Remove ads", and, if you watched ads for an ad-free period, the time that period ends.
• Your advertising consent choice — stored by the Google User Messaging Platform so you are not asked on every launch.
• Working state — technical details the app needs to keep your alarms reliable, such as the current charging session, a snoozed alarm, or which permission prompts you have already seen.

This data never leaves your device through the app. It is deleted when you clear the app's data or uninstall the app. (If you use Android's own backup, see section 5.)

Optional: "Battery use by app" and Usage access

The "Battery use by app" screen estimates which apps drained your battery. Android reserves exact per-app battery figures for system apps, so the app works them out itself. It only does this if you turn on Usage access for Battery Alarm in your phone's Settings — the app explains this and opens that settings page for you, and you can turn it off there at any time. With it on, the app reads, on your device only:

• which apps were in the foreground (on screen), and for how long, over the last 24 hours or 7 days;
• the names and icons of the installed apps that appear in your app launcher, so it can label that list.

It combines this with the battery-level log above to produce an estimate. This information is never sent anywhere, never shared, and not stored — it is read again each time you open the screen and discarded when you leave. The app does not see what you do inside other apps, only how long each was on screen. If you do not grant Usage access, the rest of the app works exactly the same.

4. Advertising (Google AdMob)

The free version of the app shows advertising served by Google AdMob, in two forms:

• Native ads — small ads shown inside some screens (for example above the bottom bar, and within the "Battery use by app" list). They are styled to fit the app but are always marked with an "Ad" label. They never appear over a ringing alarm.
• Rewarded ads — shown only when you choose to watch them in return for a period without ads. They never start on their own.

To deliver, cap, measure and protect those ads against fraud, Google's advertising SDK collects information such as:

• your advertising identifier (Android Advertising ID) or an equivalent signal;
• your IP address, from which an approximate (city-level or coarser) location can be derived;
• device information — model, operating system version, language, screen size, network type;
• ad interaction data — that an ad was requested, shown, viewed or clicked;
• the app identifier (com.battwise.batteryalarm) and app version.

Google uses this data as described in its own documents: Google Privacy Policy, How Google uses information from sites or apps that use our services, and the Google Ads services information. We ourselves receive only aggregated, non-identifying reporting (for example, how many ad impressions occurred and what they earned).

Consent, and personalised vs non-personalised ads

Where consent is legally required — including the European Economic Area, the United Kingdom and Switzerland — the app shows a Google-certified consent message (the Google User Messaging Platform) before any ad request is made, and no advertising data is collected unless you agree. You may choose non-personalised ads, which are based on coarse context rather than a profile of your interests; these still require basic data such as your IP address for delivery and fraud prevention.

In regions where consent is not legally required, ads are personalised by default according to your device-level advertising settings, and you can opt out at any time using the controls in section 12.

To change or withdraw a consent choice you made in the app: open the app's Settings screen and tap "Ad privacy settings". This re-opens the same consent message, so you can change your choice or withdraw consent entirely — withdrawing it is as easy as giving it. That option is shown wherever a consent message applies to you (for example the EEA, the UK and Switzerland). You can also delete or reset your advertising ID at any time (section 12), which applies to every app on the device.

What withdrawing consent does and does not do: it stops personalised advertising — no profile of your interests is used, and the identifiers behind it are no longer read for that purpose. The app is free and ad-supported, so non-personalised ads may still appear, using only what is needed to deliver an ad and prevent fraud (such as your IP address). If you want no advertising at all, you can buy "Remove ads" (section 5), or uninstall the app.

5. Google Play: purchases, updates and backup

"Remove ads" purchase (optional)

You can pay once to remove ads permanently. The purchase is made and processed entirely by Google Play, using the payment method in your Google account. We never see or receive your card, bank or other payment details. Google Play tells the app only whether you own "Remove ads", so it can hide ads — including after you reinstall the app or move to a new phone with the same Google account. As the seller, we can see the order in our Google Play Console (for example the order number, product, price, country and date), which we use only for accounting, refunds and support. Google processes your payment and purchase history under the Google Privacy Policy and the Google Play Terms of Service.

Other Google services the app relies on

• Google Play in-app updates — the app asks Google Play whether a newer version exists. This is handled by Google Play services on your device; we receive nothing.
• Android backup — if you use Android's built-in backup (managed by Google and tied to your Google account), your device may include your alarms, settings, charging history, ad-free status and anti-theft PIN hash in that backup, so they can be restored on a new phone. The battery-level log and the app's other working state are deliberately excluded, because they describe only the old phone. That backup is handled entirely by Android and Google — we have no access to it, and you can disable device backups in your phone's system settings.
• Google Play distribution — when you install or update the app, Google Play processes that transaction under its own privacy policy, and gives us only anonymous, aggregated statistics.

The app contains no analytics SDK, no crash-reporting SDK, and no social-network or third-party tracking SDK of any kind.

6. Permissions the app uses, and why

The optional flashlight-blink alert only switches the camera's flash LED on and off, using the system torch switch, which requires no camera permission — the app never takes or sees photos or video. While the anti-theft alarm is ringing, the app raises the alarm volume to maximum so it cannot be silenced with the volume buttons, and puts your previous volume back when it stops. The app never accesses your camera images, photos, microphone, contacts, precise location, files, call logs, SMS, or any other personal content.

7. Why we are allowed to process this data (legal bases)

Where the EU/UK GDPR or a comparable law applies, our legal bases are:

8. Sharing and disclosure

We do not sell, rent or trade personal information. The only routine disclosure is to Google, as described in sections 4 and 5. We may disclose information if we are legally compelled to do so by a valid legal process, or where necessary to protect our rights or the safety of users — but in practice the only personal data we hold is the order information for a purchase (section 5) and any emails you send us.

9. International transfers

Google operates globally, so the advertising data described in section 4 may be processed on servers outside your country, including in the United States. Google states that it relies on lawful transfer mechanisms such as the European Commission's Standard Contractual Clauses and the EU-US, UK and Swiss Data Privacy Framework. Because we hold no personal data ourselves, we perform no transfers of our own.

10. How long data is kept

• On your device: until you delete it, clear the app's data, or uninstall the app. The battery-level log is also discarded automatically after 7 days; usage data read for "Battery use by app" is not stored at all.
• Purchase order records (if you buy "Remove ads"): kept by Google Play, and visible to us in the Play Console, for as long as needed for accounting, tax and refunds.
• By Google: according to Google's own retention practices, described in the Google Privacy Policy. Advertising identifiers are typically retained for a limited period and can be reset by you at any time.
• Emails you send us: kept only as long as needed to deal with your request, then deleted.

11. Children's privacy

The app is a general-audience utility. It is not directed to children, and we do not knowingly collect personal information from children under the age of 13 (or under the higher age of digital consent that applies in your country — for example 16 in parts of the EEA). If you believe a child has provided personal information through the app, contact us and we will act on it. Parents and guardians can also disable personalised advertising on the device using the controls in section 12.

12. Your controls — how to limit or stop ad tracking

• Reset or delete your advertising ID: Android Settings → Privacy → Ads (the exact path varies by manufacturer and Android version). Deleting the ID stops apps, including this one, from receiving it.
• Opt out of ad personalisation across Google: Google Ads Settings.
• Change or withdraw your ad consent in the app: app Settings → "Ad privacy settings", shown wherever a consent message applies to you.
• Remove ads entirely: buy "Remove ads" in the app, or uninstall the app, which stops all of it immediately.
• Turn off Usage access: Android Settings → Apps → Special app access → Usage access → Battery Alarm (the path varies by phone). The "Battery use by app" screen then stops reading usage data.
• Revoke any permission in Android settings; the app keeps working with reduced functionality (for example, alarms may not ring without notification permission).

13. Your rights

Depending on where you live, you have some or all of the rights below. Because the app's own data lives only on your device and we operate no servers, you can exercise most of them yourself, immediately, by clearing the app's data or uninstalling it. For anything else, email support@teknicalengineers.com and we will respond within the period your law requires (generally 30 days, or 45 days in California). We will never discriminate against you for exercising a privacy right.

• Access — ask what personal data is held about you.
• Correction — have inaccurate data corrected.
• Deletion / erasure — have data deleted.
• Portability — receive data in a portable format.
• Objection and restriction — object to processing based on legitimate interests, or ask that it be restricted.
• Withdraw consent — at any time, without affecting processing that already happened.
• Complain — to your data protection authority (see below).

European Economic Area, United Kingdom and Switzerland

You hold the GDPR / UK GDPR / Swiss FADP rights listed above. You may lodge a complaint with your national supervisory authority — in the EEA see the EDPB list of members, in the UK the Information Commissioner's Office, and in Switzerland the FDPIC. Advertising consent is obtained through a Google-certified consent message, and the app is operated in line with Google's EU user consent policy.

California and other US states

Under the CCPA/CPRA — and comparable laws in Virginia, Colorado, Connecticut, Utah, Texas, Oregon, Montana, Delaware and other states — you have the rights to know, delete, correct, and to opt out of "sale" or "sharing" of personal information and of targeted advertising and profiling.

We do not sell personal information for money. However, personalised advertising through AdMob may qualify as "sharing" for cross-context behavioural advertising under the CPRA, and as "targeted advertising" under other state laws. To opt out, use any control in section 12 — in particular deleting your advertising ID or opting out in Google Ads Settings — or email us. We honour opt-out preference signals such as Global Privacy Control where they reach us. Categories involved: identifiers (advertising ID, IP address), internet or device activity, and coarse geolocation inferred from IP, all collected by Google for advertising — we retain none of them; and, only if you buy "Remove ads", commercial information (the order record described in section 5), which is used solely to provide the purchase and is never sold or shared for advertising. No sensitive personal information is collected.

Brazil (LGPD)

You have rights of confirmation, access, correction, anonymisation, portability, deletion, information about sharing, and revocation of consent under Law No. 13.709/2018, and may petition the ANPD.

Canada (PIPEDA and provincial law, including Quebec Law 25)

You may access and correct your personal information and withdraw consent, and may complain to the Office of the Privacy Commissioner of Canada or your provincial authority.

India (DPDP Act, 2023)

You have the rights to access a summary of your personal data, to correction and erasure, to grievance redressal, and to nominate another person to exercise your rights. Send grievances to the contact address in section 16; if unresolved, you may approach the Data Protection Board of India.

Australia and New Zealand

You may access and correct your personal information under the Australian Privacy Principles or the New Zealand Privacy Act 2020, and complain to the OAIC or the Office of the New Zealand Privacy Commissioner respectively.

Other regions

We aim to apply the same baseline worldwide. If you are covered by another regime — including South Africa (POPIA), Japan (APPI), South Korea (PIPA), Turkey (KVKK), Saudi Arabia (PDPL), the UAE, Nigeria (NDPA), Kenya, Thailand (PDPA), Singapore (PDPA), Indonesia (PDP Law) or China (PIPL) — the rights granted to you by that law apply, and you can exercise them at the contact address below.

14. Security

App data is stored in Android's private per-app storage, which the operating system isolates from other apps. Your anti-theft PIN is never stored in plain text — only as a salted SHA-256 hash. Because we run no servers and hold no accounts, there is no central database of users that could be breached. No method of electronic storage is perfectly secure, and you should also protect your device with a screen lock.

15. Changes to this policy

If the app changes in a way that affects privacy, we will update this page and revise the effective date above before releasing that version. Material changes that require your consent will be reflected in the in-app consent message. This version replaces the policy dated 23 August 2026. It adds the optional "Remove ads" purchase through Google Play, the "Battery use by app" screen and its optional Usage access, the battery-level log, and rewarded and native ads (replacing the earlier banner ads), and describes what is and is not included in Android backups. The 23 August policy had itself replaced the one dated 17 July 2026, which described the app before it contained advertising.

16. Contact

Questions, privacy rights requests, or complaints about this policy or the app: support@teknicalengineers.com. Please state which right you wish to exercise and the country you are writing from, so we can apply the correct rules.