Signature placement
Add a signature stamp to your PDF, position it precisely, resize it, and export it into the final document.
PDF signature app · Android
Sign PDFs without the paper chase.
Signarta is built for people who need to open a PDF, place a signature, add text, handle simple form fields, and export a clean signed copy without turning a quick task into office work.
Flattened export
Create a signed copy that is ready to send, save, or upload.
Fast signing, less friction.
Signarta keeps the workflow focused: open a PDF, place what you need, review it, and export a finished copy.
Typed text overlays
Add typed text for names, dates, notes, initials, and other quick document fields without leaving the editor.
Form-aware editing
Work with supported PDF form fields while keeping unsupported no-op controls out of your signed export.
Zoom-friendly review
Inspect the details before export with a page viewer designed for pinch zoom, compact controls, and large-document stability.
Clean PDF export
Export a flattened signed copy so your signature and text become part of the output PDF instead of loose editor elements.
Built for real documents
Designed around repeat use, memory discipline, corrupted-file handling, and clear failure messages when a file cannot be processed.
A simple signing flow.
No bloated dashboard. No complicated account setup. Just the steps people actually need.
1
Open PDF
Select the document you need to sign or mark up.
2
Add signature
Place your signature where it belongs and adjust it visually.
3
Add text
Fill in names, dates, notes, and quick document details.
4
Export copy
Save a finished signed PDF that is ready to share.
Privacy by design
Your PDFs are not our business.
Signarta is designed around a local-first document workflow. The app does not require an account, does not upload your PDFs to ThoferLabs, and does not use a separate in-app analytics or advertising SDK.
Read the Privacy Policy
Accounts required
No
PDF upload to ThoferLabs
No
Ads or tracking SDKs
No
Crash / store diagnostics
Handled through Google Play Console
Future paid features
Google Play subscriptions
Made for quick, everyday paperwork.
Contracts, school forms, waivers, work documents, approvals, and any PDF that needs a signature without a printer.
Good fit for
- ✓Signing PDFs from your phone when you are away from a desk.
- ✓Adding dates, typed names, initials, and short notes.
- ✓Reviewing and exporting a final signed copy quickly.
- ✓Keeping document work local instead of routing PDFs through a random web uploader.
Honest scope
Signarta is a focused PDF signing app, not a full legal document platform, cloud drive, OCR scanner, or enterprise workflow suite. That is intentional. The goal is to make the common signing job feel clean and dependable.
Questions people will ask.
Clear answers before users install the app.
Is Signarta free?
Yes. Signarta is planned to be free at launch to help the app gain traction. Future premium features may be offered through Google Play subscriptions.
Does Signarta upload my PDF files?
No. Signarta is designed as a local-first PDF editor. Your PDFs, signatures, text placements, and exports are handled on your device unless you personally choose to share a file using Android sharing tools.
Does the app use analytics?
Signarta does not use a separate in-app analytics SDK or ad-tracking SDK. Crash reports, ANR reports, store listing metrics, and future billing reports are handled through Google Play Console and Android Vitals.
Can I use it for every kind of PDF?
Most normal PDFs should be fine, but some files may be corrupted, unreadable, password-protected, unusually large, or built with unsupported form behavior. Signarta is being built to fail clearly instead of pretending every PDF is safe to process.
Ready when the Play Store listing is live.
Signarta will launch free first. When subscriptions are added later, billing and entitlement handling will go through Google Play.