Short answer
A signed contract is sensitive, so the ideal flow keeps it on-device: scan every page to a straight, clean PDF, drop your signature where needed, and lock the finished file behind Face ID or a password. ScanTo Pro does all of this on-device and batches the pages into one PDF, so you can send a signed, secured file without uploading it to an online service first. It's pay-once with no account.
Try ScanTo Pro on a real example first, and check the current App Store listing for exact features and pricing before you decide.
What to look for before choosing
- Sharp multi-page PDF with straightened pages
- Add a signature directly on the page
- Lock the finished PDF with Face ID or a password
- On-device — no forced cloud upload
- Pay-once, no account
A practical decision process
- Define the job you need done most often.
- Test the app with real content or a realistic scenario.
- Check privacy labels and account requirements.
- Confirm export and backup options.
- Choose the pricing model you are comfortable maintaining.
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 is built for exactly this — use the checklist above and test it on a real example.
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.