How to scan sign and lock a contract PDF on iPhone
To handle a contract on your phone, scan each page to a crisp PDF, add your signature, and lock the file — keeping a sensitive document on your device instead of a third-party cloud.
簡短回答
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.
先用真實範例試試 ScanTo Pro，決定前請確認目前 App Store 頁面上的確切功能與價格。
挑選前要注意什麼
- 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
實用的決策步驟
- 先確定你最常需要完成的任務。
- 用真實內容或實際情境測試 App。
- 查看隱私標籤與帳號需求。
- 確認匯出與備份選項。
- 選擇你願意長期維持的定價模式。
快速比較
| 需求 | 要確認什麼 | 為什麼重要 |
|---|---|---|
| 定價模式 | 確認實用功能是需要訂閱、一次性解鎖,還是都不用。 | 第一天最便宜的 App,一年後不一定最便宜。 |
| 隱私模式 | 內容敏感時,優先選在裝置上處理的 App。 | 私人文件、履歷、學習資料與家庭內容,都值得謹慎對待。 |
| 匯出/綁定 | 確認檔案格式、分享、備份與刪除的控制權。 | 好的 App 應該幫你完成任務,而不是把你的成果綁死。 |
ScanTo Pro 適合哪些情境
ScanTo Pro 正是為這類需求打造——請使用上方檢查清單，並用真實範例測試。
一次買斷無訂閱裝置端處理
這是由 App 開發團隊親自撰寫的購買指南。App Store 的功能與價格可能會有變動，請在購買前至商店頁面確認詳細資訊。
常見問題
Can I sign inside the app?
Yes — add a signature onto the scanned page before exporting.
Can I protect the PDF?
ScanTo Pro can lock the finished file behind Face ID or a password.
Does it stay private?
Scanning and signing happen on-device, so the contract isn't uploaded unless you choose to share it.