# SIGNificant E-Signing Client > Mobile application for secure e-signing of PDF documents with advanced forensic features. (iPhone/iPad app by Namirial GmbH.) - Source: https://appshunter.io/ios/app/significant-e-signing-client/id433375543 (this page in markdown: same URL + `.md`) - Developer: [Namirial GmbH](https://appshunter.io/developer/433375546) - Category: Business, Productivity - Price: Free with in-app purchases - Rating: 4.33/5 from 9 App Store ratings · 22 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 38 MB - Languages: Czech, English, French, German, Italian, Japanese, Korean, Portuguese, Chinese, Slovak and 1 more - Released: 2011-05-24 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/significant-e-signing-client/id433375543/reviews.md ## What is SIGNificant E? SIGNificant provides enterprises with a simple way to sign and return PDF documents anywhere, anytime with just a few clicks on a mobile device. SIGNificant is based on open PDF standards and true digital signatures. You don't need to be a SIGNificant customer or visit our website to check on the validity of documents. The SIGNificant E-Signing Client shows its full potential if you integrate your back-office systems with our server infrastructure. If you only need an app to capture signatures, check out our brand new SIGNificant Signature Capture app. It requires NO internet connection, and might fit your needs without any compromises on security. Key Features: * Natural signing experience like pen on paper — While signing on the screen the signature is displayed without delay and accurately like signing with a pen on paper. * Forensically identifiable signatures — SIGNificant Signature Capture records the signature of a person using all available parameters, such as acceleration, speed, and rhythm. If there is a dispute about a captured signature, an expert tool is available to forensically analyze the biometric characteristics of the captured signature. * Document Binding – When a signature, including all these biometric parameters, is captured locally on the device, it is safely embedded using an asynchronous public key encryption and uniquely bound to the target PDF document. Copy/paste attacks can thus be easily detected. * Add attachments — Add scans of driving license, passport or any other photo out of your photo gallery. If your iPad has a camera you are able to attach any current photo. * Typewriter — Lets you enter text anywhere on a PDF document. It is useful for typing on a non-fillable form or outside the fillable areas of a form. * Browse through Multipage Documents – Browse and review multipage documents before you sign them. Especially useful for field agents to get documents signed in person, in real time, by presenting a document to a client on a tablet. * Email support - After e-signing, you email your document right back from the App. * Support for cloud storage - SIGNificant Signature Capture utilizes the iOS “Open In” functionality to allow you to open a document from most other applications that have documents and contracts in them – including your inbox, Dropbox, Evernote, Box(.net) and others – and sign them via SIGNificant on the go. Once you are finished you can store and share documents via your cloud storage. * Adobe Acrobat compatible PDF — The document is Adobe Acrobat compatible, so it can be viewed with any standard PDF viewer. PDF documents are sealed with a digital signature compliant to the ISO-Standards for PDF. Thus the validity of the digital signature can be validated with Adobe Reader and many other PDF viewers. * Customization / SDK — Enterprises can utilize the xyzmo infrastructure and launch their own e–signature application, as well as integrate the functionality of SIGNificant Signature Capture into their own apps (The apps are also available as SDK). Please note that an internet connection is required to prepare a document for e-signing with SIGNificant, because your documents are processed online on our servers. Once a document has been prepared and is available in the App, you NO longer need an Internet connection and you can use all the functionality offline. Loading documents into the SIGNificant App works best over WiFi or high speed cellular data. It might be slow over EDGE. xyzmo delivers SIGNificant Signature Capture for free to all, and offers additional inexpensive, high-value apps for enterprise or power users who want a little more. ## Key features - Natural signing experience - Forensically identifiable signatures - Document binding with encryption - Add attachments from gallery/camera - Typewriter for text entry - Browse multipage documents - Email signed documents - Cloud storage support ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Unlimited for one month | $5.99 | one-time | | Unlimited for one year | $59.99 | one-time | ## Recent user reviews (10 of 22) All indexed reviews: https://appshunter.io/ios/app/significant-e-signing-client/id433375543/reviews.md ### 5/5 — Easy Signature!! *2015-12-06, version 2.5.6* If you need to sign and send a document on the fly but can't get to a fax or make a meet in person to do so, this app is the perfect tool! I hate running out of my way to fill paperwork so I use this app to easily sign my signature and email right away. This app saves me a lot of time! ### 5/5 — good and free *2015-04-29, version 2.4.18* Convenient! Free! ### 5/5 — It works for me *2015-04-12, version 2.4.18* I only use it to sign forms and it works for me. Thanks developers! ### 5/5 — Great Ap *2014-12-24, version 2.4.18* Great App, would like to use it on my MacBook ### 1/5 — Doesn't work *2014-11-24, version 2.4.18* I've tried deleting and re-installing this app as per the author's suggestion - still will not work. Won't open the document and gives error message that it is the wrong server. I checked with the author and its going to the right place. I wish it worked. ### 4/5 — Excellent tool *2014-10-31, version 2.4.15* Perfect if you want to go paperless. ### 5/5 — The Best *2014-10-29, version 2.4.15* Significant is wonderful! No more print, sign, fax, documents for me. ### 1/5 — Great App...issues since iOS 8 *2014-10-02, version 2.4.3* I love this app! I use it almost daily to have customer sign work orders and send to the client. Since upgrading to iOS 8 however, the app will NOT import my documents.i have contacted the developer, who was extremely helpful. The best we can determine it is simply an iOS 8 issue. The developer has already submitted a new version, but it has yet to be released to be App Store. Hopefully when it is, all of my issues will be resolved. Until then, my business is almost at a standstill, or I have to print, sign & scan documents to email to the client. It's a huge headache! When the app was working, it was better than 5 stars, hopefully it will be again very soon. ### 5/5 — Awesome app *2014-08-03, version 2.4.3* I get my docs while on the road sign them and return to the processors or escrow or underwriter, this is the best app I carry on my iPad .... ### 5/5 — Increíble! *2014-07-24, version 2.4.3* Y gratis! ## Frequently asked questions about SIGNificant E ### What is the SIGNificant E-Signing Client's rating? SIGNificant E-Signing Client has a rating of 4.3 stars based on 9 ratings. ### Is SIGNificant E-Signing Client free to use? Yes, SIGNificant E-Signing Client is available for free. ### What devices does SIGNificant E-Signing Client support? SIGNificant E-Signing Client supports iPhone, iPad, and iPod. ### What is the age rating for SIGNificant E-Signing Client? The app has an age rating of 4+. ### How often is SIGNificant E-Signing Client updated? The latest version, 2.19.0, was released on September 28, 2022. Update frequency is generally good for business applications. ### Can I sign documents offline with SIGNificant E-Signing Client? The description mentions a separate 'SIGNificant Signature Capture' app that requires NO internet connection. The main SIGNificant E-Signing Client may require connectivity for certain features, though document binding is local. ### How are signatures secured in SIGNificant E-Signing Client? Signatures are forensically identifiable, recording biometric parameters like acceleration and speed. They are then embedded using asynchronous public key encryption and bound to the PDF document to prevent copy-paste attacks. ### Is the signed document compatible with standard PDF viewers? Yes, signed documents are Adobe Acrobat compatible and can be viewed with any standard PDF viewer. The digital signature is compliant with ISO-Standards for PDF and can be validated with Adobe Reader. ## Version history (last 1 release) ### 2.19.0 — 2022-09-28 * Support for iOS 16 * Bug fixes and improvements ## Apps similar to SIGNificant E | App | Rating | Price | Category | | --- | --- | --- | --- | | [Mobalytics](https://appshunter.io/ios/app/mobalytics/id510041796) | 4.6 (9) | Free | Business | | [eZy Sign,Scan & Fill Documents](https://appshunter.io/ios/app/ezy-signscan-and-fill-documents/id971648827) | 4.7 (32) | Free | Business | | [acsDelivery](https://appshunter.io/ios/app/acsdelivery/id631758354) | 2.3 (4) | Free | Business | | [OneSpan Sign - eSign Docs Now](https://appshunter.io/ios/app/onespan-sign-esign-docs-now/id780714083) | 4.4 (48) | Free | Business | | [SimpleMDM](https://appshunter.io/ios/app/simplemdm/id847612226) | — | Free | Business | | [Sign Expert - eSign PDF, Word](https://appshunter.io/ios/app/sign-expert-esign-pdf-word/id939604135) | 2.5 (2) | Free | Business | ## More apps by Namirial GmbH - [xyzmo Signature Capture](https://appshunter.io/ios/app/xyzmo-signature-capture/id922416949) - [SIGNificant SignOnPhone](https://appshunter.io/ios/app/significant-signonphone/id948229521) - [SIGNificant SignAnyWhere](https://appshunter.io/ios/app/significant-signanywhere/id1142154725) All apps by Namirial GmbH: https://appshunter.io/developer/433375546 --- *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.*