Comparison

Salt mSign vs NotaryCentral

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

Head to head
About

Salt mSign

Features
Read full description

Salt mSign is a mobile security MFA token for authentication of the user identity during login and authentication/verification of transactions after login. Salt mSign is ‘connected’ in that the authentication responses are returned directly to the authentication server thereby enabling authentication that is independent of the delivery channel that initiated the request. What can Salt mSign do? - Connected Biometric 2FA Login for User access via RADIUS, Microsoft ADFS, SAML Federated Login for cloud, Shibboleth and Browser-based Web Applications. - Multi-Factor Authenticator (MFA) for all the organization’s Mobile Apps Supporting Multiple Methods of Sign-In & Authentication Independent of the service delivery channel. - Single Authenticator for all the organization’s Mobile Apps Supporting Multiple Methods of Sign-In & Authentication via Inter-App. Typical Uses: - Mobile Soft Token used for 2FA Biometric Login to Internet Banking, e-Government Portals, and Corporate Online Services. - High-Value Transaction Signing with WYSIWYS (What You See Is What You Sign). - Biometric MFA Login for Remote Network Access: RADIUS, ADFS, Shibboleth. - Authentication for other Mobile Apps on the same device. - Quorum Approvals and Advanced Workflows with separation of duties where the Initiator of Payment Instruction is not authorized to approve; with multiple Authorisers. - Hardware Token replacement. - Card Not Present Payments, 3D Secure support. Salt mSign requires you to register your App. Please contact Salt Group for registration information. Features include: - Biometric Sign-In with TouchID, FaceID or PIN - Rich Content and free-form payload information - WYSIWYS (What You See Is What You Sign) - Inclusion of supplementary user input - Signature code returned via the mobile network - Support for multiple signatories - Support for Public Key Cryptography; Salt mSign supports the use of symmetric and asymmetric keys in signing. - Figaro and secure QR code support for offline delivery of payload information: using the device camera to scan Figaro/QR codes that contain payload information for offline signing. - Enhanced Rich Content delivery of large payloads including the capacity for data formatting and payload content consisting of graphics images. - Issuer configurable profiles including PIN length, PIN retry thresholds, weak PINs, token display timeouts, Signature Code lengths, language support, issuer branding - Re-deployable in the field, anywhere in the world - Full browser independence - Familiar user interface

About

NotaryCentral

Streamline your notary business operations with this comprehensive mobile solution. Manage appointments, client information, and ensure compliance with industry standards. This tool is designed to help you work more efficiently and grow your notary practice.

Highlights
  • Business management for notaries
  • Compliance tools
  • Appointment scheduling
  • Client information management
  • Business growth features
Features
Read full description

The all-in-one app for notaries Stay Compliant. Work Smarter. Grow with Confidence. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Salt mSign3 screens
NotaryCentral4 screens

Verdict

The call

The clearest difference is update cadence: NotaryCentral at every 3 weeks against Salt mSign's every 4 months. NotaryCentral also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Salt mSign ships an update every 4 months, NotaryCentral every 3 weeks. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 8 level
Salt mSign versus NotaryCentral: the parameters behind the verdict, then further details
ParameterSalt mSignNotaryCentral
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.415.5 — better
Further details — not scored
Size53 MB118 MB
Age rating4+4+
DeveloperSalt GroupAlexander Leon

In-app purchases

None

Salt mSign

No in-app purchases

None

NotaryCentral

No in-app purchases

Questions

Is Salt mSign free?
Salt mSign is free to download, with no in-app purchases.
Is NotaryCentral free?
NotaryCentral is free to download, with no in-app purchases.
Do Salt mSign or NotaryCentral have ads?
Neither Salt mSign nor NotaryCentral shows ads.
Which is updated more often, Salt mSign or NotaryCentral?
Salt mSign ships an update every 4 months, and NotaryCentral every 3 weeks. Most recently, Salt mSign was updated on October 10, 2026 and NotaryCentral on October 6, 2026.

Other comparisons