Freelance contracts your clients actually sign.Biometrically verified in minutes.
Create, dispatch, and legally seal contracts without recurring monthly software subscriptions. Signers authenticate via Face ID, Touch ID, or Windows Hello, producing an immutable cryptographic audit certificate.
Software Services Agreement
How SignSenders works from start to finish
From drafting to signed PDF in less than 2 minutes — secured with authentic out-of-band OTP and WebAuthn biometric verification.
Draft or Attach Clauses
Type your project statement, paste custom terms, or attach standard freelance clauses (Scope of Work, Payment Terms, IP Ownership, NDA) with a single click.
Dispatch Secure Link
Enter your client's email. SignSenders emails a secure signing link to your client and creates an out-of-band OTP token in your dashboard.
OTP & Biometric Verification
Client unlocks the agreement with the 6-digit OTP and authenticates with Face ID, Touch ID, or Windows Hello to cryptographically bind their signature.
Download Certified PDF
Both parties immediately receive a finalized PDF featuring the client signature, biometric verification metadata, cryptographic SHA-256 hash, and audit trail.
Engineered for legal weight and recipient trust.
Standard e-signature tools only record an arbitrary canvas doodle. SignSenders binds hardware biometric factors and out-of-band tokens to generate irrefutable digital proof.
WebAuthn Hardware Biometric Attestation
Signers authenticate using their personal device hardware (Apple Face ID, Touch ID, or Windows Hello). The client's cryptographic credential signs a challenge digest uniquely computed from the document hash, ensuring strong non-repudiation.
Out-of-Band OTP Isolation
Signing links sent via email are locked until the client enters the 6-digit verification code you communicate directly via WhatsApp, SMS, or phone call.
Freelance Legal Clause Library
Standardized clauses covering Scope of Work, Invoicing & Net Payment, Intellectual Property transfer, NDA, and Late Fee protections.
Tamper-Evident Audit Trail
Every completed agreement generates a cryptographic audit page recording IP addresses, biometric credential IDs, AAGUIDs, and SHA-256 signatures.
Pay Only When You Send
₹149 per contract dispatched. No recurring monthly SaaS fees, no expiration dates on purchased credits, and drafting contracts is always free.
Transparent pay-per-contract pricing
Drafting and customizing contracts is always 100% free. Unlike traditional monthly subscriptions, you only use 1 credit when dispatching a verified agreement to your client.
Single Credit Pack
No subscription. No expiration. Pay only when you dispatch a contract.
Includes 1 free contract credit upon signup. Payments via UPI, Cards, NetBanking.
Everything included:
- OTP + WebAuthn Biometric Verification (Face ID / Touch ID / Windows Hello)
- Out-of-Band 6-Digit OTP Verification via WhatsApp / Call
- Digital Contract Signing & Pre-Built Clauses (Scope, IP, NDA)
- Court-Ready PDF with Biometric Audit Certificate
- SHA-256 Document Integrity Checksum
- Credits never expire (Pay As You Go)
1 free credit included • No credit card required to start
How many contracts per month?
Estimate your investment. With SignSenders, quiet freelance months cost you ₹0.
Why Freelancers Choose SignSenders
Built exclusively for solo consultants, developers, designers, and creators worldwide.
WebAuthn Biometrics
Hardware biometric attestation (Face ID, Touch ID, Windows Hello) cryptographically bound to the document hash under the IT Act, 2000.
Zero Subscriptions
Pay ₹149 per contract only when you dispatch an agreement. Credits never expire, meaning zero monthly fees during quiet freelance periods.
Tamper-Evident SHA-256
Every executed contract is sealed with a unique SHA-256 integrity hash digest, signer IP address, UTC timestamp, and complete audit trail certificate.
Security built into every line of code
We don't just ask for a squiggly signature on a screen. SignSenders enforces authentic OTP verification and WebAuthn biometric cryptographic integrity on every agreement under the IT Act, 2000.
WebAuthn Biometric Verification
Signers authenticate using hardware-bound Face ID, Touch ID, or Windows Hello. Generates cryptographic non-repudiation proof directly bound to the contract hash.
Out-of-Band OTP Verification
Signing links cannot be unlocked by email access alone. Clients must enter the 6-digit cryptographic OTP provided directly by the freelancer.
SHA-256 PDF Integrity Checksum
Every finalized document is hashed with SHA-256 to ensure zero tampering, altering, or modification after signature completion.
Private Encrypted Storage
Signed PDF files reside in private storage buckets accessible exclusively via time-limited signed URLs generated for authorized signers.
Anti-Tamper & Brute-Force Protected: Contracts automatically lock after 5 incorrect OTP attempts. Every signed certificate is stamped with full cryptographic metadata (Credential ID, AAGUID, timestamp, and IP hash).
Everything you need to know
Clear answers about biometric verification, OTP tokens, and legal compliance.
Send your next freelance contract for free.
Create your account today and receive 1 free contract credit immediately. No credit card required, no monthly commitments.
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