Support
Answers to the common questions, and a direct line to the developer for everything else.
Contact
Having trouble with the app? Email qutubsi@gmail.com. You are writing to the person who built it, and you will usually hear back within a day or two.
What to include
- Your iPhone or iPad model and iOS version.
- Which step went wrong (opening, signing, exporting, restoring a purchase).
- Where the PDF came from: Files, Mail, or another app.
Please don't send confidential documents or real signatures. A description or a redacted sample is enough.
Troubleshooting
The file won't open
Make sure the file is a readable PDF. Scanned images, password-locked files from other apps, or corrupted downloads can fail to open. Try opening it in Files first.
How do I share the signed document?
Tap Export and choose Mail, Outlook, WhatsApp, Files, or any other installed app that accepts PDF documents.
Restore purchases on a new device
- Sign in to the App Store with the same Apple Account you used to buy Pro.
- Open Private PDF Signer and go to the Pro upgrade screen.
- Tap Restore purchases.
- Wait a moment while Apple verifies the purchase.
Purchases cannot be restored with a different Apple Account. Subscriptions are managed in your Apple Account settings, not inside the app.
FAQ
Are my documents uploaded anywhere?
No. Everything is processed on your device. See the privacy policy for the full picture.
Is the signature legally binding?
The signature is a visual mark placed on the page, not a cryptographic digital certificate. Whether it is accepted depends on the recipient and your jurisdiction.
Does it support Arabic?
Yes. The interface is fully localized in Arabic and English, and Smart Match can download Arabic fonts such as Noto Sans Arabic, Noto Naskh Arabic, Cairo and Amiri to match Arabic documents.
Does it work on iPad?
Yes. One purchase covers iPhone and iPad on the same Apple Account.