SignNow Mobile SDK for Secure eSignature Integration
Integrate a powerful and easy-to-use eSignature solution with your mobile apps to speed up approvals and simplify document-based transactions. Minimize development cycles with a seamless eSignature SDK that works with both iOS and Android.
The signNow mobile sdk is a developer-focused software kit that embeds secure electronic signing into native iOS and Android applications. It provides programmatic document rendering, field placement, signer flows, and offline signing capabilities while preserving compliance with U.S. e-signature laws such as ESIGN and UETA. The SDK supports common document formats, integrates with identity checks and audit logging, and is designed to reduce friction for mobile-first processes across industries that require authenticated, auditable signatures without routing users to external web pages.
Why Organizations Choose the signNow mobile sdk
Use the signNow mobile sdk to embed a compliant eSignature experience directly into apps, reduce context switching for users, and centralize security and audit controls under your app’s governance and policies.
Common Implementation Challenges to Anticipate
Managing network interruptions on mobile devices and ensuring documents remain valid after offline signing can complicate client-side workflows and state handling.
Mapping complex forms to mobile screen sizes requires adaptive field placement and testing across devices to avoid layout or usability errors.
Integrating second-factor authentication or identity verification services may need additional backend coordination and increases overall latency for signing flows.
Maintaining consistent audit trails and time-stamps across distributed mobile clients requires synchronized clocks and secure server-side logging to avoid disputes.
Representative User Profiles
Mobile Developer
A mobile developer integrates the signNow mobile sdk into native iOS or Android apps, handles authentication flows, configures field placement for documents, and implements offline caching and synchronization logic to ensure signatures are captured and recorded reliably.
IT Security Manager
An IT security manager evaluates cryptographic controls, enforces access policies, configures audit logging and retention, and ensures the signNow mobile sdk deployment meets organizational HIPAA or FERPA requirements where applicable.
Primary Users and Roles for signNow mobile sdk
Mobile app developers responsible for native iOS and Android implementations and SDK integration tasks.
Product owners who need embedded signing to improve conversion and reduce document turnaround times.
Compliance and security teams validating ESIGN/UETA adherence and audit trail integrity for mobile transactions.
Successful deployments balance developer controls, UX design, and compliance requirements to deliver reliable mobile signing experiences.
Primary Features Exposed by the signNow mobile sdk
The SDK offers a set of capabilities designed for robust mobile signing, document handling, validation, and administrative controls within native applications.
Document Rendering
High-fidelity rendering preserves original layout and fonts so fields align precisely on screen; supports PDF, Word-derived PDFs, and flattened forms for consistent signer presentation.
Interactive Fields
Programmatic placement of signature, initial, text, checkbox, and date fields with validation rules reduces manual form preparation and ensures consistent data capture across sessions.
Offline Signing
Secure offline signing lets users complete signatures without connectivity, with queued synchronization and replay protection to prevent duplication when the device reconnects.
Advanced Authentication
Integrates with multi-factor methods, government IDs, and third-party identity verification services to strengthen signer identity and meet industry-specific authentication requirements.
Audit Trail
Comprehensive, tamper-evident audit records capture signer events, IP addresses, timestamps, and device metadata to support evidentiary requirements for U.S. legal frameworks.
Customization Options
The SDK allows UI customization, branding, localized strings, and custom error handling so the signing experience matches application UX and accessibility expectations.
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Integrations and Connectivity Supported by the SDK
The signNow mobile sdk can be connected to cloud storage, identity providers, and backend systems to streamline document flows within existing enterprise environments.
Cloud Storage
Native connectors allow apps to pull and push documents to providers such as Google Drive, Dropbox, and OneDrive while preserving metadata and access controls for downstream processing.
CRM Integration
Integrate with CRM systems to attach signed contracts and update records automatically; useful for sales workflows requiring stored agreements and signature timestamps linked to contacts.
Identity Providers
Support for OAuth, SAML, and enterprise single sign-on enables centralized identity management and simplifies user provisioning and deprovisioning across signing activities.
Backend APIs
Server-side APIs coordinate document lifecycle events, webhook notifications, and persistent audit records so mobile clients remain lightweight while ensuring reliable server validation.
Core Flow: How signNow mobile sdk Operates
The embedded signing flow coordinates document delivery, field rendering, signer authentication, signature capture, and final audit sealing between app client and signNow services.
Document Delivery: Send or fetch document from server storage.
Field Placement: Place and configure interactive fields programmatically.
Signer Authentication: Authenticate user via OAuth or SSO.
Finalization: Apply cryptographic seal and record audit trail.
Collect signatures
24x
faster
Reduce costs by
$30
per document
Save up to
40h
per employee / month
Quick Start: Embedding signNow mobile sdk
Follow these condensed steps to add the signNow mobile sdk to a native app and capture a signed document in a basic flow.
01
Register App: Obtain API credentials and create application profile.
02
Install SDK: Add SDK package to iOS or Android project.
03
Configure Auth: Implement OAuth 2.0 and token renewal.
04
Render & Sign: Load document, place fields, and capture signature.
Audit Trail and Recordkeeping Steps
Maintain a consistent audit process to ensure each mobile signing event is traceable and defensible for legal or compliance reviews.
01
Capture Event:
Record signature initiation timestamp
02
Record Identity:
Log authenticated user identifier
03
Device Metadata:
Store device and IP metadata
04
Seal Document:
Apply cryptographic signature seal
05
Store Audit:
Persist logs in immutable storage
06
Retain Evidence:
Keep records per retention policy
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Why choose airSlate SignNow
Free 7-day trial. Choose the plan you need and try it risk-free.
Honest pricing for full-featured plans. airSlate SignNow offers subscription plans with no overages or hidden fees at renewal.
Enterprise-grade security. airSlate SignNow helps you comply with global security standards.
Common workflow settings help standardize behavior across mobile signing sessions and reduce configuration errors in production deployments.
Setting Name and Configuration Overview
Default configuration used for common workflows
Reminder Frequency and Delivery Interval
Every 48 hours until completion
Signature Validation Mode
Standard cryptographic seal
Offline Queue Retention Period
7 days encrypted cache
Audit Log Synchronization Window
Immediate push on reconnect
Document Versioning and Locking
Lock after final signature
Supported Platforms and Minimum Requirements
iOS Requirements:iOS 12+ with Swift or Objective-C
Android Requirements:Android 8.0+ with Kotlin or Java
Server Requirements:HTTPS endpoints and OAuth support
Confirm the SDK version matches your app’s minimum OS targets and ensure the server component manages credentials, webhooks, and audit storage to keep client builds lean and secure.
Security and Authentication Features
Transport Encryption:TLS 1.2+ enforced
At-rest Encryption:AES-256 storage
User Authentication:OAuth 2.0 tokens
Multi-factor Support:TOTP and SMS
Audit Logging:Immutable event records
Document Sealing:Tamper-evident signatures
Industry Use Cases for signNow mobile sdk
Embedded mobile signing is commonly used in finance, healthcare, education, and field services to shorten approval cycles while maintaining legal and audit requirements.
Field Service Agreements
A mobile technician captures work orders and customer signatures onsite using an embedded SDK that preserves document formatting and metadata
Signature placement and offline caching
Immediate invoice generation and reduced billing delays
Resulting in faster collections and clearer service records for audits and customer records.
Healthcare Intake Forms
A clinic uses the SDK to collect patient consent forms on tablets at check-in, preserving PHI handling and consent metadata
Prebuilt form fields and access controls
Reduced paperwork and streamlined patient throughput
Ensures compliant records with auditable signatures for HIPAA purposes and clinical workflows.
Implementation Best Practices for Reliable Mobile Signing
Adopt consistent design and security patterns to minimize errors and ensure the signNow mobile sdk is used effectively within your mobile product.
Design for Mobile Field Layout
Test field placement across device sizes and orientations, prefer responsive coordinates and sensible defaults, and avoid dense clusters of interactive fields that reduce clarity for signers.
Secure Token Management
Store access tokens securely using platform best practices, implement short token lifetimes and refresh flows, and validate tokens server-side to prevent unauthorized API use.
Preserve Audit Integrity
Capture and forward device metadata, timestamps, and signer context to the server promptly; ensure clocks are synchronized and logs are stored with immutability safeguards.
Plan for Offline Scenarios
Implement encrypted local queues for signed artifacts, validate signatures after sync, and surface clear UI messages about synchronization state to avoid duplicated submissions or data loss.
Create an account with signNow, register your application through the developer console, and generate OAuth client credentials. Store client secrets securely on the server and use short-lived access tokens in mobile clients to reduce exposure risks.
Use OAuth 2.0 authorization code flow with a secure backend token exchange. Avoid embedding long-lived secrets in mobile binaries and implement token refresh and revocation logic for secure session management.
Store signed document artifacts in an encrypted local queue, track operation IDs, and implement idempotent sync endpoints server-side. Validate signatures and attach server-side timestamps upon successful synchronization.
Test rendering on representative devices and use relative field anchors where possible. Convert problematic source documents to flattened, print-ready PDFs prior to runtime to reduce rendering inconsistencies.
Ensure signer intent and consent are captured, retain complete audit trails, and use accepted authentication levels. Compliance with ESIGN and UETA depends on process design as much as technology.
Check network logs, confirm token validity, review server webhook responses, and validate audit entry creation. Provide clear error codes in the client to aid troubleshooting and retries.
Feature Availability: signNow mobile sdk Versus Competitors
A concise comparison of common mobile SDK and platform support across notable eSignature vendors with U.S.-centric compliance notes.
Define retention timelines and backup practices that meet regulatory needs and support potential legal discovery for signed documents and audit trails.
Minimum Retention Periods:
Retain for at least six years per common business practices
Long-term Legal Holds:
Preserve documents subject to litigation until release
Encrypted Backups:
Store backups encrypted with key management
Data Deletion Processes:
Implement secure deletion and logging
Periodic Integrity Checks:
Run checksum validation on archived files
Risks and Compliance Considerations
Invalid Consent:Signature disputes
Weak Authentication:Regulatory exposure
Poor Retention:Evidence gaps
Unencrypted Storage:Data breach risk
Improper Logging:Audit failure
Noncompliance:Legal penalties
Pricing and Plan Features Compared
High-level pricing feature comparison across vendors; consult vendor pages or sales for current list prices and enterprise terms.
Pricing and Plan Feature
signNow (Recommended)
DocuSign
Adobe Sign
Dropbox Sign
OneSpan Sign
Starting Plan Structure
Tiered subscriptions with per-user and per-envelope options
Per-user and per-envelope tiers with enterprise quotes
Subscription plans with enterprise contracts and per-user licensing
Simple developer plans and per-user subscriptions
Enterprise-focused licensing with higher initial costs
Enterprise Contracting
Standard enterprise contracts and BAA available
Mature enterprise sales and SLAs
Enterprise agreements with Adobe Experience Cloud bundling
Enterprise and SMB contracts through Dropbox
Tailored enterprise agreements with security emphasis
Mobile SDK Included
SDK available; licensing varies by plan
SDK available; advanced SDK features on enterprise tiers
SDK available; may require enterprise terms
API/SDK available via Dropbox Sign developer plans
SDK available; enterprise licensing common
Compliance Add-ons
BAA and advanced controls available
Additional compliance packages and integrations
Entitlements for enterprise compliance and governance
Compliance features via Dropbox offerings
Focused on regulated industries with specific modules
Support and SLAs
Business and enterprise support options with SLA tiers
Multiple SLA and support tiers for enterprises
Adobe support and integration services
Developer support plus paid enterprise SLAs
Dedicated enterprise support and onboarding services
What is the airSlate SignNow Mobile SDK?
The SDK offers a fast and easy way to embed secure eSignature workflows in your iOS and Android applications.
The current version of the SDK allows you to:
✅ Fetch document metadata
✅ Setup a signing process
✅ Embed eSignatures in Kotlin and Java projects
Take advantage of user-friendly approval workflows seamlessly integrated with your mobile apps
Authorize in airSlate SignNow from your app
Access your airSlate SignNow account and start using the award-winning eSignature software.
Access your airSlate SignNow documents
Fetch documents and templates stored in your airSlate SignNow account and use them directly in your application.
Pre-fill documents before signing
Fill out blank fields inside your fillable documents with data before your signing session begins.
Collect signatures in a role-based order
Add one or multiple signers and get their legally-binding electronic signatures on contracts, agreements, invoices, or other documents right inside your app.
Why choose the airSlate SignNow Mobile SDK?
Developer-friendly solution
Time and cost savings
Security and compliance with international eSignature laws and regulations
Stability and reliability
100% self-service
Compatible with both iOS and Android
Why embed airSlate SignNow eSignatures in your mobile apps?
⭐ Near instantaneous online approvals from anywhere
⭐ End-to-end signing workflows completed within your mobile application
⭐ Powerful eSignature functionality adds value to your software product
⭐ Custom branding makes a professional impression on your users
How to get started with the airSlate SignNow Mobile SDK?
Obtain your credentials. To create your Client ID and Client Secret, follow the link.
Set up the SDK. Initialize the airSlate SignNow Mobile SDK inside your application with a single string of code and authorize using your credentials.
Start your session. Use the Access Token and Refresh Token you obtained during authorization.
Fetch documents from your airSlate SignNow account. You can easily fetch a specific document’s metadata using its ID.
Add data and signatures. Pre-fill a selected document using key-value pairs (if needed), specify signer email addresses, and start the signing process.
Learn more about the SDK implementation in our detailed guide.
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