# OP.Sign: Scan & Sign PDF Docs — Edit & Fill Documents Securely > Securely scan, sign, fill, and share documents with e-signature capabilities. (iPhone/iPad app by Pangolin Labs LTD.) - Source: https://appshunter.io/ios/app/opsign-scan-and-sign-pdf-docs/id1491012289 (this page in markdown: same URL + `.md`) - Developer: [Pangolin Labs LTD](https://appshunter.io/developer/1451178677) - Category: Productivity, Business - Price: Free with in-app purchases - Rating: 4.80/5 from 963 App Store ratings · 8 written reviews indexed - Age rating: 4+ - Requires: iOS 13.2 · 39 MB - Languages: English - Released: 2020-04-27 - Data updated: 2026-06-10 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/opsign-scan-and-sign-pdf-docs/id1491012289/reviews.md ## What is OP.Sign? OP.Sign is an e-signature & scanner app that lets you scan, sign and ask others to sign documents such as PDF, Word, and Docx files securely. OP.Sign app was created for small and medium businesses (SMB’s) who are looking for an all in one e-signature and scanner app. Business owners can manage their documents and track the activity of signers, including LIVE updates on who signed the documents and who didn’t. The most Secure way to Scan, Sign, and fill PDF or Word documents, and Save them on the cloud. Send an encrypted, code protected, document for others to review - your contacts can sign documents without the need to download the OP.Sign mobile app SCAN FILES Scan documents on the go using your camera, modify and adjust your PDF documents, render anything scannable with our mobile scanner app. Fast, easy, and fully secured. FILL & SIGN DOCUMENTS Easily fill forms and sign contracts or any other document on your mobile. Save your signature and initials for future use and apply it to documents when needed. Import documents from your scans, email, photo gallery, and Share from 3rd party apps from your preferred cloud service (Google Drive, Dropbox etc.) SHARE FILES & DOCS SECURELY Share documents with co-workers, contractors, partners, clients, and vendors with ease. Send an encrypted, code protected document for others to review and sign even if they don’t have the OP.Sign app. Our platform is fully protected; your PDF documents are encrypted and controlled. ASK OTHERS TO SIGN Easily share your documents with others, get live updates on who signed the documents, and who didn’t and track all your signatures in one place. You can share the documents with your contacts by using an email address or via SMS messages, WhatsApp, Gmail, etc. ORGANIZE YOUR DOCS Manage all your scans and signed documents in one place. Save your document to a secure cloud, request signatures with one click, sign documents with your Initials, or add your signature effortlessly. OP.Sign is ready to use instantly * No download - Signers can sign via a web browser - without downloading the app * No registration - OP.Sign is functional before the user account setup * No password - Op.Sign requires no password! The digital signature app can be used for a range of purposes, such as signing a digital contract, NDAs, sales contracts, financial agreements, permission slips, lease agreements and much more. This digital signature app is essential for digital signature and signature specifications in this digital globe. This e-signature works as a simple sign for document signing, and as an e-signature maker. - OP.Sign offers a paid subscription plan that starts with a free 30 day trial. After the trial, the OP.Sign Premium subscription begins at 4.99 per month and includes unlimited signatures and signature flows with other people. - OP.Sign also maintains a Basic plan with limited use which is Free; the recipients of the documents-to-sign do not require to open an account with OP.Sign and can apply their signatures for Free. - Payment will be charged to your Apple ID account at the confirmation of purchase. Subscription automatically renews unless it is canceled according to the App Store policies. You can manage and cancel your subscriptions by going to your account settings in the App Store after purchase. ## Key features - Scan documents with camera - Fill and sign forms - Securely share encrypted documents - Request signatures from others - Track signature activity - Cloud storage for documents ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | OP.Sign Premium Monthly | $4.99 | per month | ## Recent user reviews (8 of 8) All indexed reviews: https://appshunter.io/ios/app/opsign-scan-and-sign-pdf-docs/id1491012289/reviews.md ### 1/5 — Doesn’t Work *2022-03-05, version 2.1.4* Great idea, but the mobile browser button to sign up for the account I wanted didn’t work no matter how many times I pressed sign up. It worked in the app to sign up, but when testing the app under the demo document the moving of the text box on the signature and date line was dysfunctional, often times only allowing me to make the text or sign box bigger or smaller but not allowing me to move it in order to center on the line. ### 5/5 — Amazing 👍 *2021-11-11, version 2.1.4* 👍 ### 5/5 — Awesome!! *2021-04-30, version 2.1.0* Very good **Developer response:** Thank you so much! :) ### 5/5 — Great app. But how? *2021-01-29, version 1.4.3* I have to admit, the UI is great. And integration with Monday.com is what led me here. I have one large concern before rolling out however, how is this app free? Where do the developers actually get compensated? **Developer response:** Hi Mitch, thanks for the great review and for posing your concerns. We plan to launch an advanced OP.Sign Premium plan soon for a monthly subscription .The Free Basic plan will remain available to users who are budget tight.  We are committed to the security and privacy of our customers and their documents.  Please send a note to contact@op.today so we can continue this discussion. The OP.Sign team. ### 5/5 — Review *2021-01-14, version 1.4.2* This app have been very helpful. It get the job done. Very savvy app. Thank you! ### 5/5 — Amazing! *2020-12-10, version 1.4.0* What an amazing app. Truly enjoyed how simple and easy and secured you have made this process for me. **Developer response:** How exciting to read your review Mo79! thank you so much! ### 5/5 — Cool *2020-11-17, version 1.4.0* This app is really cool. **Developer response:** Thanks very much 😎 Keep enjoying OP.Sign! ### 5/5 — Best App Status 100% *2020-11-03, version 1.3.0* The best app I’ve seen for signing and filling any form . Super simple and very efficient . **Developer response:** How great it is to read your review @Fixer72 Keep using and enjoying our platform; yours, the OP.Sign team ## Frequently asked questions about OP.Sign ### What does OP.Sign do? OP.Sign is an e-signature and scanner app that allows users to scan documents, fill out forms, sign contracts, and securely share them with others. It provides features for tracking signature activity and storing documents in the cloud. ### How can I sign documents with OP.Sign? You can easily fill forms and sign contracts or any other document directly on your mobile device. The app allows you to save your signature and initials for future use, applying them to documents whenever needed. ### Is OP.Sign free to use? OP.Sign offers a Basic plan which is free and allows for limited use. For unlimited signatures and signature flows, a paid subscription plan is available, starting with a free 30-day trial. The premium subscription costs $4.99 per month. ### Do others need to download the app to sign documents? No, recipients can sign documents via a web browser without needing to download the OP.Sign mobile app. This makes it convenient for collaborators who may not have the app installed. ### What types of documents can I scan and sign? You can scan and sign various document types including PDF, Word, and Docx files. The app is suitable for signing digital contracts, NDAs, sales contracts, financial agreements, permission slips, lease agreements, and much more. ## Version history (last 5 releases) ### 2.1.4 — 2021-08-25 NEW - Type your name and make it your beautiful signature Improved performance for faster signing Bug fix ### 2.1.3 — 2021-07-26 NEW - Signature request reminders, don't let your documents remain unsigned. Reminder requests are sent both automatically and additionally on demand by the document owner Automatic reminders are sent afet 30 minutes, 24 hours, 48 hours and every 7 days until signed NEW - Copy the direct document url and share it with your signers on any platform - Whatsapp, iMessage, Slack, Teams, etc. Performance improvements Bug fixes ### 2.1.2 — 2021-06-03 • Improved loading time • Improved performance ### 2.1.1 — 2021-05-20 • Improved loading time • Improved performance ### 2.1.0 — 2021-04-29 Major improvements for "share with passcode" functionality - User can set the number of days the document will be open for viewing - User can set if to allow the recipient to download the document locally - A protected document can be viewed on the web by guest signers/viewers (no need to download app) - The protected document is automatically added to the document dashboard - Share with passcode events added to the document Activity log UI and UX improvements Performance improvements Bug fixes ## Apps similar to OP.Sign | App | Rating | Price | Category | | --- | --- | --- | --- | | [タグスト TagStock](https://appshunter.io/ios/app/tagstock/id6443841460) | — | Free | Productivity | | [VTech Companion Devices](https://appshunter.io/ios/app/vtech-companion-devices/id6443592740) | 2.7 (7) | Free | Productivity | | [Agtrinsic](https://appshunter.io/ios/app/agtrinsic/id1664681960) | — | Free | Productivity | | [AttitudeLab](https://appshunter.io/ios/app/attitudelab/id6443941860) | — | Free | Productivity | | [Form Filler: fill & sign forms](https://appshunter.io/ios/app/form-filler-fill-and-sign-forms/id1137894117) | 4.6 (31,756) | Free | Productivity | | [Grain SA](https://appshunter.io/ios/app/grain-sa/id1665831580) | — | Free | Productivity | ## More apps by Pangolin Labs LTD - [OP.](https://appshunter.io/ios/app/op/id1451178678) All apps by Pangolin Labs LTD: https://appshunter.io/developer/1451178677 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*