PDF Leve
Privacy Policy
This Policy explains how Duo Dev ("we") handles the data of users of the PDF Leve app (the "App"), in compliance with the Brazilian General Data Protection Law (Law No. 13,709/2018, LGPD) and, where applicable, other data protection laws. In short: the App has no sign-up or login, does not send your PDFs or your history to any server of ours and keeps everything on your device. The only processing done by third parties is ads (Google AdMob, in the free version) and purchases (Google Play).
1. Who controls the data
Duo Dev is responsible for the App. For any privacy matter, write to contato@duo.dev.br.
2. What data we process and where it stays
- Data that stays only on your device (we do not receive it):
- Your PDFs: when you open a file, the App keeps a copy in its own private folder (the original file is not changed). The PDF content is read and displayed on the device and is never sent to us.
- Document list: name, size, page count, last page read, date last opened, whether it is in Recent or Favorites, and a thumbnail of the first page.
- Preferences: theme, language, night mode by default, whether the intro was already seen, whether Premium is active (with the date of the last confirmation) and the time of the last ad shown.
- PDF password: if you open a protected PDF, the password you type is used only to open it; the App does not store it.
- App permissions (AndroidManifest.xml):
- Internet and network state: used for consent and ads (free version), to check your purchases on Google Play and to open links (rate the app, manage subscription, send email). Nothing you read is sent.
- Advertising ID (
AD_ID): used by Google AdMob in the free version. - We do not request storage, gallery, camera, microphone, location or contacts permissions. Files arrive through the Android file picker or "Open with" from another app.
- Sharing and printing: if you tap Share, the PDF is sent to the app you choose; with Print, it is handed to the Android print service. We do not receive these files.
- Data processed by third parties:
- Google AdMob (free version only): displays ads and may process the advertising identifier, IP address, device data (model, system, language), ad interaction data and diagnostics. See item 5.
- Google Play (purchases): processes payment and subscription. We do not see card or payment data; from Google Play we only receive confirmation that the user is entitled to Premium.
What we do not collect: name, email, location, contacts, photos or the content of your PDFs. We only receive your email if you write to us.
3. What we use the data for
- Run the App's functions: open and display PDFs, search text, remember the last page, keep Recent and Favorites, share and print.
- Show ads in the free version.
- Unlock Premium for those who purchased it.
- Keep the App working and secure and answer those who write to us.
We do not sell your data.
4. Legal basis
We process data to perform the contract for using the App and its purchases (art. 7, V, LGPD) and for our legitimate interest in keeping the service running (art. 7, IX). Use of the advertising identifier for personalized ads depends on consent (art. 7, I), which the person chooses on the consent screen and can change at any time (item 5). Where laws such as the GDPR apply, the same purposes rely on the equivalent bases (contract performance, legitimate interest and consent).
5. Ads and your consent
In the free version the App shows one full-screen (interstitial) ad when you open a file, at most once every 3 minutes. There are no banners, and there is never an ad while you read, when opening or closing the App, or when going back to the list.
Consent: after the intro, where Google requires it, the App shows Google's consent form (UMP). The ad is only loaded if your consent and region allow it. If you decline personalization, ads may continue without personalization, and the App works the same.
Changing your mind: in Settings › Privacy and ads › Ad preferences (when the option exists for your region). You can also manage personalization at adssettings.google.com, and read how Google uses data at policies.google.com/technologies/ads.
Premium: whoever subscribes or buys Premium sees no ads and is not asked for consent; the ads SDK is not started.
6. Purchases and subscriptions
Purchases are made through Google Play, which handles payment, renewal, cancellation and refunds. The App stores on the device only the information that Premium is active and the date of the last confirmation, and checks again with Google Play every time it is opened with internet access. Without internet, the stored information is valid for up to 30 days. We have no server of our own to validate purchases.
7. Who we share data with
- Google (AdMob and Google Play), under the conditions described above.
- Authorities, when required by law.
- The people or apps you choose when sharing a PDF.
We do not share data with third parties for commercial purposes.
8. International transfer
Google may process data outside Brazil. In such cases, the safeguards provided by the LGPD and Google's policies apply.
9. Security and retention
Your PDFs, history and preferences stay in the App's private storage, which other apps cannot access, and remain until you delete them. The App does not take part in Android's automatic backup. Because documents may contain sensitive data (contracts, medical exams, personal documents), we recommend keeping your device's screen lock on. To delete:
- One item: remove it from Recent and from Favorites. When it leaves both lists, the private copy and the thumbnail are deleted. The original file is never deleted.
- The history: in Settings › Clear history (empties Recent; favorites stay).
- Everything: uninstall the App or clear its data in Android settings.
10. Your rights
Since we hold no copy of the data that stays on your device, most rights are exercised in the App itself. Under the LGPD, a person may, on request: confirm that processing exists; access their data; correct incomplete or outdated data; request anonymization, blocking or deletion; request portability; know with whom we share their data; withdraw consent; and have automated decisions reviewed. Depending on where you live, other laws (such as the GDPR) may grant similar rights, exercised the same way. To exercise them: contato@duo.dev.br. You may also complain to the ANPD or to the data protection authority of your country.
11. Children and teenagers
The App is intended for people over 18 and is not directed at children. Minors should use it only with the authorization and supervision of parents or guardians.
12. Changes to this Policy
We may update this Policy. When a change is relevant, we will let you know in the App or on this page. The date of the last update is at the top.
13. Contact
Duo Dev — contato@duo.dev.br · duo.dev.br