Short answer
To scan and sign a contract, capture each page to a crisp PDF, add your signature, and lock the file so only you can open it. Keeping it on device avoids uploading a sensitive document to a third-party cloud.
ScanTo Pro is built for exactly this, with Pay once, No subscription, On-device. Test it on a real example before relying on it, and check the current App Store listing for pricing.
What to look for before choosing
- Sharp, multi-page PDF output with straightened edges.
- Add a signature directly on the page.
- Password/Face ID lock on the finished PDF.
- On-device processing — no forced cloud upload.
- Export to Files or email.
A practical decision process
- Scan every page in order.
- Straighten and clean each page.
- Drop your signature where needed.
- Lock the PDF with Face ID or a password.
- Share the signed, secured file.
Quick comparison
| Need | What to check | Why it matters |
|---|---|---|
| Pricing model | Check whether useful features require a subscription, a one-time unlock, or neither. | The cheapest app on day one may not be cheapest after a year. |
| Privacy model | Prefer on-device work when the content is sensitive. | Private documents, resumes, study data, and family content deserve careful handling. |
| Export / lock-in | Confirm file formats, sharing, backup, and deletion controls. | A good app should help you finish the task, not trap your work. |
Where ScanTo Pro fits
ScanTo Pro fits when you need a signed, secured contract PDF without sending it to an online service.
Pay onceNo subscriptionOn-device
This page is an independent buying guide. App Store features and prices can change, so confirm details on the listing before purchase.