PDF-O · Last updated October 29, 2026
This policy explains what information PDF-O ("the app") collects, why, and how it is used. PDF-O is developed by Nikhil Rokadiya.
| Data | Source | Purpose |
|---|---|---|
| Email address, name, account ID | Firebase Authentication (email, Google Sign-In, Sign in with Apple) | Optional sign-in and account identification |
| Documents you upload or create | On-device storage and optionally Firebase Storage | Store and sync your files across your devices |
| App usage counters | Firebase Firestore | Enforce free-tier limits and show usage stats |
| Purchase and subscription status | Apple App Store / Google Play (StoreKit / Play Billing) | Manage subscriptions and unlock paid features |
| Payment details | Apple (App Store) / Google (Google Play) | Process payments; PDF-O does not see or store your card/UPI details |
| PDFs you convert online (and the PDF password, if you type one) | Sent from the app to our conversion server (Google Cloud Run, Mumbai region) | Online PDF to Word conversion; in the web version also PDF to Excel and PDF to Text. Deleted right after the conversion, see Document processing |
| Device identifier, stored only as a one-way hash | Android ID / iOS identifier for vendor | Allow only one free trial per device |
| App Store receipt / Google Play purchase token | Apple / Google, checked by our server | Confirm that a subscription is real, active and when it ends |
| Camera and photo access | On-device only | Scan documents, pick images to convert to PDF, and read tables in Photo to Excel |
| Device identifier (advertising ID / IDFA) | Google AdMob | Show ads in the free version of the app, subject to your consent choice below |
PDF-O shows ads to free-tier users using Google AdMob. AdMob may collect a device advertising identifier (such as Apple's IDFA) to serve and measure ads. On iOS, we ask for this via Apple's App Tracking Transparency prompt, and you can allow or deny it at any time in your device Settings. Where required by law (for example, for users in the EEA, UK, Switzerland, and certain US states), we show a consent message before any personalised advertising occurs, and you can choose to see only non-personalised ads. Ad partners may use this data as described in Google's advertising and partner sites policy. Pro subscribers do not see ads and this identifier is not used.
PDF-O also uses Google Analytics for Firebase for app usage analytics, and the anonymous usage statistics described below. We do not sell your personal data.
To understand how many people use the app and from which regions, the app sends anonymous usage statistics to the developer's own Google Firebase project. This consists of: a random install ID generated on your device (it is not linked to your name, email address, phone number or account), the app version, the platform, your device's language, region and time zone, the date you first opened the app, and, for each day, how many times and for how many seconds the app was open. We do not use this to identify you, we do not collect your precise location or IP address for it, and we do not share it with advertisers. Only the developer can read it. You can stop it at any time by uninstalling the app; to ask for the statistics of your install to be deleted, contact us at the address below.
Most tools (compress, merge, protect, edit, scan, OCR and Photo to Excel in the mobile app) run entirely on your device and do not upload your files.
Online PDF to Word. When your device is online, PDF to Word uploads the PDF (and the PDF's password, if you enter one) over an encrypted HTTPS connection to our conversion server, which runs on Google Cloud Run in Google's Mumbai (asia-south1) region. The file is saved to the server's temporary storage only while it is being converted. The uploaded PDF and the produced Word file are deleted as soon as the result has been sent back to you, or when the conversion fails or times out. We do not keep copies of your documents, and we do not look at their content. When your device is offline, or the server cannot be reached, the conversion runs on your device instead and nothing is uploaded. In the web version of PDF-O, PDF to Excel and PDF to Text also use this server in the same way.
To protect the service from abuse, the app sends a Firebase sign-in token with each request (an anonymous one if you have not signed in) and the server applies size and rate limits. The server's technical logs (time of the request, IP address, file size, errors) are kept by Google Cloud Logging, by default for 30 days. These logs do not contain the content of your documents.
To give each device one free trial, the app sends a device identifier (Android ID on Android, identifier for vendor on iOS) to our server. We store only a one-way hash of it, together with the time the trial started. When you buy or restore a subscription, the app sends the App Store receipt or Google Play purchase token to our server (Google Cloud Functions for Firebase), which checks it with Apple or Google. We store whether the subscription is active, when it ends, and the store's transaction reference, so that renewals, cancellations and refunds can be applied to your account.
Your data is stored on-device and on Google Firebase infrastructure where you use signed-in cloud features. Documents you process are transmitted over encrypted connections.
If you create a PDF-O account, you can permanently delete it from inside the app: Settings → Delete Account. This deletes your profile, authentication data, usage counters, cloud-synced documents and the link between your account and any trial or store subscription, then signs you out. Two records are kept without any link to your account: a record of your store subscription (product, dates and status, no payment details), which we need to keep your Pro access correct, and the hashed device marker of a used free trial, so that the trial cannot be started again on the same device. Deleting your PDF-O account does not automatically cancel an Apple or Google Play auto-renewable subscription; manage or cancel billing in your Apple ID or Google Play subscription settings.
You can request access to, correction of, or deletion of your personal data at any time using the in-app Delete Account option or by contacting us at the email below.
PDF-O is not directed at children under 13, and we do not knowingly collect personal information from children.
We may update this policy from time to time. Changes will be posted on this page with an updated revision date.
Questions about this policy or your data: nikvishi@gmail.com