Signibility Coupon & Promo Code (October 2026)

Short answer: the code is AI20, and it takes 20% off a Signibility subscription for as long as you keep it — not just the first invoice. On the Personal plan that turns $12.99 a month into $10.39, and on Business it turns $29.99 per user into $23.99.

Here is the part worth knowing: those discounted monthly prices are exactly the same as Signibility's annual rates. So AI20 gets you the annual price while still paying month to month, with no year-long commitment.

What is Signibility?

Signibility is an electronic signature platform aimed at freelancers, agencies and small teams — the people sending contracts, NDAs, proposals and offer letters rather than running enterprise procurement.

You upload a PDF, drop signature, date and text fields where they belong, and send it. The person signing does not need to create an account; they open a link, draw, type or upload a signature, and finish. What comes back is a sealed PDF with a hash-chained audit trail attached.

That audit trail is the part most worth understanding. Each event — opened, consented, signed, sealed — carries the hash of the entry before it, so rewriting any single line breaks every hash after it. Change one byte of the finished PDF and the seal breaks visibly in any PDF reader.

How much does Signibility cost?

Three plans, and the free one is genuinely free rather than a trial.

A few things the pricing page does not shout about. Business has a two-user minimum, so the real entry price is $59.98 a month billed monthly, or $47.98 billed annually — not the per-user figure. Annual is charged up front for the full year. And prices are in USD, billed through LemonSqueezy.

How do you use the AI20 coupon code?

1. Open the pricing page and pick Personal or Business.
2. Choose your billing cycle — monthly or annual.
3. Enter AI20 in the discount field at the LemonSqueezy checkout.
4. Check the total drops by 20% before you pay.

Because the discount is recurring rather than a one-off, it should keep applying at each renewal. Worth confirming on your second invoice, as you would with any recurring code.

Is it better to use AI20 on monthly or annual billing?

This is the genuinely useful question, and the answer is not obvious.

Signibility's annual plans already work out at roughly two months free. Applying 20% to the monthly price lands on exactly the same number — $10.39 on Personal, $23.99 on Business. So if you only compare those two, AI20 on monthly billing wins, because you get the identical rate without paying a year up front and without losing flexibility.

The one case for annual is if AI20 also applies on top of the annual rate at checkout. That would take Personal to about $99.74 for the year. Check the total on the checkout screen before deciding — the discount field will show you which way it stacks.

What do you actually get on the free plan?

Three signature requests in total, and they do not reset. But the free plan is more generous than the request cap suggests:

• Unlimited self-signing. Documents you sign yourself never count against the three. If most of your signing is your own paperwork, the free plan may be all you need.
• The full audit trail. Sealed PDFs and the hash-chained trail are on all three plans. Plenty of competitors put proof behind a paid tier, which quietly makes their free plan a demo.
• No card, no expiry. Nothing to cancel and no trial countdown.
• 10 MB per file and 100 MB of storage, single user.

What does the refund policy cover?

The first payment is refundable in full within 14 days, on either monthly or annual billing. Renewals and unused time are not refunded, though you can cancel at any point and keep the plan until the period ends.

Practical read: take the monthly plan with AI20 first, use the 14 days properly, and only move to annual once you are sure — because an annual payment is charged up front and that money is not coming back after the window closes.

What is the difference between the Personal and Business plans?

Personal covers one person sending up to 25 documents a month, with 5 reusable templates, automatic reminders and expiry dates, signer verification by email and SMS, and password-protected share links.

Business adds unlimited signature requests, team members and roles, custom branding and API access, plus bigger limits — 50 MB per file and 100 GB of storage against Personal's 25 MB and 5 GB.

The deciding factor is usually volume and branding, not team size. If you send more than 25 documents a month, or need them to carry your own logo, Business is the plan regardless of how many people are in the account.

Is the Signibility coupon worth it?

If you are sending contracts regularly, yes. A recurring 20% is worth considerably more than the one-off first-payment discounts most tools hand out, and the effective price — $10.39 a month for 25 documents, with a real audit trail — sits below what most competitors charge for a comparable tier.

If you send fewer than three documents a year, skip the code entirely and stay on the free plan. It has no expiry and no card, and it includes the same sealed audit trail as the paid plans.