Penstroke: Fill & Sign PDF

Fill out PDF forms, add your signature, and share the finished document—all from your phone.

Penstroke helps you complete applications, agreements, and everyday paperwork. Open a PDF or a photo of a paper form, add the information you need, and export the result.

FILL PDF FORMS
• Fill text fields, check boxes, and selection fields in supported PDF forms.
• Move through detected fields with guided form filling.
• Add text, dates, and check marks to flat or scanned PDFs.
• Reuse saved text for details you enter often.

ADD SIGNATURES AND STAMPS
• Draw your signature or import it from a photo.
• Remove the paper background from imported signatures and stamps.
• Save signatures and initials for reuse.
• Add initials to every page at once.
• Create a name stamp or import your own.

MARK UP AND SHARE
• Use a pen, highlighter, or strike-through.
• Move, resize, and rotate the marks you add.
• Undo and redo changes.
• Export and share your completed PDF without a watermark.
• Your original file stays unchanged.

KEEP YOUR DOCUMENTS ON YOUR PHONE
Documents, signatures, stamps, and saved text are processed and stored on your device. Penstroke does not upload them to its servers. No app account is required.

Open password-protected PDFs by entering their password. Export documents with embedded fonts for Korean, Japanese, and Latin text.

SIMPLE PRICING
Start with 3 free documents. A document counts when you add its first mark.

Need more? Choose a 24-hour pass or lifetime access. No subscription or automatic renewal. Buying another pass adds 24 hours.

Documents you have already started remain available to finish and share after your pass expires. Opening and viewing documents is always free.

Lifetime access can be restored with the same Google account. A consumed 24-hour pass is stored on this installation and cannot be restored after reinstalling or moving to another device. Payments are handled by Google Play.

PLEASE NOTE
• Signatures are handwritten images, not certificate-based digital signatures.
• Some Adobe XFA forms cannot be filled.
• Word and HWP files must be converted to PDF before opening.
• Password protection is not retained in exported PDFs.