Signater

6.9easy start · #9 of 29
in Digital Signature API Software

Free to practise onyes
Free trialnot on record
Well documentedyes
Runs where you workyes

Runs on Android, api, iOS, Web. Paid plans from $39/mo.

Signater is ranked #9 of 29 in digital signature API software on The Geeks Club. It runs on Android, API, iOS, Web. There is a free plan. Paid plans start at $39/mo.

Signater plans and pricing

All plans

Free Free $ 0 / month 3 envelopes/month · 1 user · 3 signers/envelope · 2 documents/envelope · 5 MB/document signater.com · 30 Sept 2026

Starter $39/mo $ 39 / month; or $ 23 / month billed annually 30 envelopes/month · unlimited users · 20 signers/envelope · 20 documents/envelope · 25 MB/document signater.com · 30 Sept 2026

Business $79/mo $ 79 / month; or $ 47 / month billed annually 30 envelopes/month · unlimited users · 50 signers/envelope · 50 documents/envelope · 50 MB/document signater.com · 30 Sept 2026

Enterprise $499/mo $ 499 / month; or $ 299 / month billed annually 200 envelopes/month · unlimited users · unlimited signers/envelope · unlimited documents/envelope · 100 MB/document signater.com · 30 Sept 2026

Compared on digital signature API software

Free plan: Yes
Paid from: $39/mo
Identity verification: Yes
Workflow status API: Yes
Webhook event types: 10
Signed-file retrieval: Yes
Sandbox environment: Yes

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The record

Core function: Signater lets businesses send, sign and track contracts digitally in minutes through a browser.
Envelopes: An envelope combines multiple documents and signers in one sequential or parallel signing flow and ends with a completion certificate.
Templates: Templates keep recurring document text ready, with typed fields for variable content and a new version for each edit.
API: The REST Integration API can create, send and track envelopes, upload documents, use templates and retrieve signed files and certificates.
API availability: The API and webhooks are available on the Business and Enterprise plans.
Webhooks: Envelope events are delivered by webhook POST requests with automatic retries.
Security: Signater uses HTTPS/TLS with HSTS, AES-256 encryption at rest, AES-256-GCM for secrets and PBKDF2 password derivation.
Signature standards: Signed PDFs use embedded PAdES signatures, SHA hashes, RFC 3161 timestamps and optional long-term validation.
Legal validity: Signater states that its electronic signatures are legally binding under the U.S. ESIGN Act, UETA and EU eIDAS.
Browser access: Signers use a browser link on phones or computers and do not need an app or Signater account.
Languages: The platform, signing flow and messages are available in English, Portuguese, Spanish, French, German and Italian.
Support: Signater directs customers to get answers about features, plans and implementation through WhatsApp, and Enterprise includes priority chat support.
Free tier: The free tier is free forever, includes three envelopes per month and requires no credit card.
Founded: 2020
Price from: $39/mo

Where it ranks on The Geeks Club

Best Digital Signature API Software in 2026#9 of 29

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Sources

signater.com· checked 30 Sept 2026
signater.com/features/envelopes/· checked 30 Sept 2026
signater.com/features/· checked 30 Sept 2026
signater.com/features/integration-api/· checked 30 Sept 2026
docs.api.signater.com· checked 30 Sept 2026
signater.com/features/security/· checked 30 Sept 2026
signater.com/free-electronic-signature/· checked 30 Sept 2026
signater.com/pricing/· checked 30 Sept 2026