DOCUMENT NO. 001
Privacy policy
Last updated: October 6, 2026
This Privacy Policy explains how the Alibi: Deleted Messages Android app (package
br.com.meualibi.app) and this website handle your data: what is accessed, why, where it is kept, who it is
shared with, how it is protected, how long it is kept and how to delete it.
1. Who is responsible
Alibi is developed and published on Google Play by Arthur Dias, who is responsible for the processing of the data described here.
Privacy contact (including to exercise the rights in section 8): arthursd@gmail.com. We reply within 15 days.
2. Summary
- Alibi keeps, only on your device, the notifications from the apps you choose.
- Notification content never leaves the device: we have no server, no user account and no usage analytics.
- The app shows Google AdMob ads. Google's SDK collects device data for ads, but has no access to your proofs.
- You can delete everything, revoke access or uninstall the app at any time.
3. Data the app accesses and why
| Data | Why | Where it is kept | Does it leave the device? |
|---|---|---|---|
| Content of notifications from the chosen apps: title, text, sender or conversation, category, time, action buttons and extra data included by the source app | To create the "proofs" you browse, search, filter and export | Encrypted database on the device | No |
| When the source app removes the notification | To show the "DELETED" stamp | Encrypted database on the device | No |
| List of installed apps (name, package and icon of apps shown on the home screen) | To let you choose which apps to record | Read on the spot; only your choice is saved | No |
| Your settings: chosen apps, sender rules, alert keywords, retention period, lock | To make the app work the way you set it up | App's internal storage | No |
| Advertising ID, IP address, device information and ad interactions (collected by Google's SDK) | To show and measure ads and prevent fraud | Google's servers | Yes, to Google (section 4) |
Notification content can be sensitive: private messages, verification codes, banking data and information about other people who wrote to you. That is why it is never sent off the device.
No app is recorded until you choose it. Changing the selection only applies to notifications that arrive afterwards.
Alibi does not access your location, contacts, camera, microphone, photos or files, except the file you choose yourself when creating or restoring a backup. Unlocking the app uses Android's own biometrics or PIN, pattern or password: the app only receives an "unlocked" answer and never has access to your fingerprint, face or password.
In-app disclosure and consent
Before asking for notification access, the app shows the "Before you continue" notice, explaining what will be read and where it is kept. Access is only requested if you tap "Agree and continue" and turn Alibi on in the Android screen. You can revoke it at any time in the Android settings.
4. Who we share data with
The content of your notifications is not shared with anyone, including us.
Google (AdMob and consent platform). To stay free, the app shows Google AdMob banners, which is why it uses the internet. Google's SDK may, on its own, collect the advertising ID, IP address (from which an approximate location can be inferred), device information, ad interactions and diagnostic data, to show and measure ads and prevent fraud. Notification content, the apps you monitor and your keywords are not sent to AdMob. Where required by law (for example, in the European Economic Area and the United Kingdom), we ask for your consent before loading ads. Learn how Google uses this data at https://policies.google.com/technologies/partner-sites and https://policies.google.com/technologies/ads
You can delete or reset your advertising ID in Android Settings → Privacy → Ads. Google may process this data outside your country, under the safeguards described in its policy.
Files you export. Exports (JSON, CSV, PDF) and backups are only created when you ask. If you choose to share a file (by email, cloud storage or another app), it goes to the destination you picked, under that service's rules. We never receive these files.
We do not sell personal data.
5. How data is protected
- Proofs are kept in a database encrypted with SQLCipher (AES-256). The key is generated on the device and protected by the Android Keystore.
- The app's data is excluded from Android backup and device-to-device transfer, so it does not end up in the cloud without you knowing.
- Optional lock with the device's biometrics or PIN. With the lock on, the app's content is hidden from screenshots and the recent apps list, and the app locks again after 30 seconds in the background.
- The backup is encrypted with AES-256-GCM, with a key derived from your password (PBKDF2-HMAC-SHA256). The password is not stored and cannot be recovered.
- Exports are not encrypted: keep them somewhere safe. The copy created for you to share stays in the app's internal storage and is deleted automatically after a few minutes.
- Keyword alerts show only the word and the app name, never the message. The widget shows only counts, never content.
- Since there is no server, there is no central database of your proofs that could leak.
We recommend using Alibi on your own device, with a screen lock, monitoring only the apps you need and turning on the app lock.
6. How long we keep data and how to delete it
| Data | How long | How to delete |
|---|---|---|
| Proofs | For the retention period you choose in Settings → "Keep messages for" (7, 30, 90, 180 or 365 days, or forever, the default). Older ones are deleted automatically. | Settings → "Delete all proofs", clear the app's data in the Android settings or uninstall the app |
| Settings | Until you change them, clear the app's data or uninstall it | Clear the app's data or uninstall |
| Exports and backups | Wherever you saved them, for as long as you want | Delete the files where you saved them |
| Data collected by Google for ads | According to Google's retention policy | Reset your advertising ID and see https://policies.google.com/technologies/retention |
Revoking notification access stops the app from recording; proofs already saved stay on the device until you delete them. Uninstalling the app deletes all of its data from the device.
Alibi has no user account, so there is no account to delete. Since we keep none of your data on a server, we have no copy of it to erase; you can still write to arthursd@gmail.com with any request.
7. Legal bases
- Consent, to read and keep on the device the content of notifications from the apps you choose, which may include sensitive data. You give it by accepting the in-app notice and turning on notification access, and you can withdraw it at any time by revoking that access.
- Consent or legitimate interest, depending on your region, for showing the ads that keep the app free.
8. Your rights
Depending on where you live (for example, under Brazil's LGPD or the EU's GDPR), you have the right to confirm whether your data is processed, access, correct, anonymize, restrict or delete it, learn who it is shared with, withdraw consent and object to processing. Since Alibi's data stays on your device, you can access it yourself (in the app or by exporting it), delete it and withdraw consent, as described in section 6. For any other request, write to arthursd@gmail.com. You can also file a complaint with your data protection authority.
9. Responsible use
Alibi is made for personal use, on your own device. Notifications may contain other people's data, such as whoever sent you messages: respect their privacy and use the app lawfully.
10. Children
Alibi is not intended for anyone under 18 and does not knowingly collect data from children.
11. This website
This website uses no cookies, has no forms and loads no analytics or tracking tools. The server's technical logs (such as IP address and page visited) are only used to keep the site running and are not used to identify visitors. Fonts are served by Google Fonts, which receives your browser's IP address when loading them.
12. Changes
We may update this policy to reflect changes in the app or the law. The date at the top shows the current version; important changes will also be announced in the app or on the Google Play listing.