Comparison

iSignatureSuite vs Email Security Suite

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iSignatureSuite

Features
Read full description

iSignatureSuite - The free app for capturing signatures on the iPad or iPhone This product is a stand-alone, free signature app and does not require any additional third-party software (such as Adobe Acrobat). However, this signature capturing app is also available to integrators as a component for their own apps. It is necessary to have an account with a webSignatureOffice server (www.webSignatureOffice.com) in order to run iSignatureSuite. Input: • PDF/A documents created by the customer (via webSignatureOffice server) • It is also possible for the above PDF documents to have customer-defined signature fields • It is also possible for the above PDF documents to have customer-created form fields Output: • When the outgoing document is PDF/A compliant, the document remains PDF/A compliant after signing • ISO-compliant PDF signatures - can be checked using all standard products (e.g. Adobe Reader) and enables interoperability with other signature processes and programmes which conform with the standards • Capture a handwritten electronic signature using an iPad Ability to customise / integrate: • Can also be fully integrated into customer apps as a component Ease of use and user-friendliness: • Sign directly in the document (no separate signature window) • Preview of the selected PDFs • Allows browsing, zooming and continuous scrolling of PDF documents • Filling out of PDF form fields and supports check boxes, radio buttons and drop-down menus • Clear document management with status tracking, automatic reminder (for all signatories) Automation: • Template management (saving documents for re-use, including signature templates) • Intelligent signature templates (e.g. automated positioning of signature fields, even for dynamic documents, e.g. using key words) • Jumps automatically to the signature fields during the signing process and zooms in if necessary • Handles compulsory and optional signature fields differently (stop at compulsory field = stop the whole signing process) Security: • Supports encryption on the iPad using biometric data with RSA 2048 Bit • Delayed signing is possible at any time without compromising safety • Form fields automatically locked once signed • Signatures provided can easily be checked (using Adobe Acrobat Reader) • Secure communication over https By using the Apple Pencil and iSignatureSuite, you can now detect the pressure distribution of your signature, and your typeface is also detected more clearly. The Apple Pencil is currently only compatible with the iPad Pro.

About

Email Security Suite

Read full description

Email Security Suite by Sixscape is a certificate manager for popular email clients for certificate based digital signing and encryption of mails. Email Security Suite delivers on internal and external secure email communications with automation of certificate request, deployment and management with protection of your private key and allows you to achieve and maintain compliance.

Screenshots

iSignatureSuite3 screens
Email Security Suite4 screens

Verdict

The call

The clearest difference is update cadence: Email Security Suite at every 2 months against iSignatureSuite's every 6 months. Email Security Suite also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

iSignatureSuite ships an update every 6 months, Email Security Suite every 2 months. The most recent releases landed on September 17, 2026 and September 15, 2026 respectively.

Scorecard2 real differences Ā· 4 level
iSignatureSuite versus Email Security Suite: the parameters behind the verdict, then further details
ParameteriSignatureSuiteEmail Security Suite
PriceFreeFree
Update frequencyEvery 6 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size13 MB82 MB
Age rating4+4+
DeveloperStepOver International GmbHSixscape Communications

In-app purchases

None

iSignatureSuite

No in-app purchases

None

Email Security Suite

No in-app purchases

Questions

Is iSignatureSuite free?
iSignatureSuite is free to download, with no in-app purchases.
Is Email Security Suite free?
Email Security Suite is free to download, with no in-app purchases.
Do iSignatureSuite or Email Security Suite have ads?
Neither iSignatureSuite nor Email Security Suite shows ads.
Which is updated more often, iSignatureSuite or Email Security Suite?
iSignatureSuite ships an update every 6 months, and Email Security Suite every 2 months. Most recently, iSignatureSuite was updated on September 17, 2026 and Email Security Suite on September 15, 2026.

Other comparisons