New — reusable clause blocks

“just one more thing” is now a signed, Stripe-paid change order.

Stop fighting scope creep in Slack threads. Draft a formal change order in 60 seconds, send one link, get the card charged on signature. Built for web & design studios on fixed-fee.

If your first paid month doesn’t net at least one paid change order, we refund it. No forms, no questions.
No credit card 10 CO/mo free forever First send in 3 min
CO-0047 · acme-studios
Pending signature
Change order · Extra screen

Add mobile responsive layouts

Price delta
+$2,400
Timeline
+5 days
Expires
7d
  • All pages adapted for tablet & mobile breakpoints
  • Cross-browser QA on Safari / Chrome / Firefox
Client signature
Sarah Chen · sarah@acme.com awaiting
BoldSign · ESIGN/eIDAS signdelta.com/s/a8fe91
Built for Webflow studiosFramer partnersShopify shopsSolo designersAgencies of 2–20
The problem

“Quick tweaks” never stay quick.

You know the pattern. A Slack message. A shrug. Three hours of unbilled work. Multiply that by a year — by a roster — and it stops being a rounding error.

Without SignDelta
C
Client
Active now
Hey, can the logo be a bit bigger?
Oh and we need a carousel on home
Should be quick right? 🙏

Work happens. Nothing gets signed. The invoice conversation happens later, awkwardly. Usually at less than full rate.

With SignDelta
1
Pick template, set price delta
45 seconds
2
Client signs from phone
30 seconds · no account
3
Stripe captures card
+$2,400 captured

Every nudge becomes a paper trail. Every paper trail ends in a payout.

Back-of-envelope

A 3-project studio recovers

$0 /yr

in scope-change revenue that used to get absorbed into fixed-fee deals.

Change orders / mo 2
Avg price delta $250
SignDelta Pro −$228
Net recovered ~26× ROI
How it works

Three steps. ’s the whole app.

01

Draft in 60 seconds.

Pick a template (revision, extra screen, rush delivery…), drop in the price delta and timeline impact. Clause blocks handle the boilerplate.

02

Client signs on any device.

A secure signing link — no account, no install. Works on phone in portrait. Signature window auto-expires so nothing rots.

03

Payments happen automatically.

Collect Now charges on signature. Invoice mode sends a hosted payment link. Zero-amount change orders auto-mark paid.

The product

One dashboard. Every order, every payment.

See what’s pending a signature, what’s signed but not paid, and what payments already processed — without leaving the tab.

app.signdelta.com/dashboard
Sample
Overview

Last 30 days

Pending sig.
+1
3
Signed
+4
12
Paid
+$6.2k
$18,450
Collection rate
+2%
98%
Revenue captured $18,450
IDChange orderAmountStatus
CO-0047Add mobile responsive layouts$2,400.00 Signed
CO-0046Homepage carousel + hero video$1,800.00 Pending
CO-0045Rush delivery (−3 days)$950.00 Paid
CO-0044German localization pass$3,200.00 Paid
Features

Everything you need, nothing you don’t.

Templates for the 6 usual suspects

The change orders that always come up — ready to send with one click.

01 Extra screen02 Extra revision03 Rush delivery04 Integration step05 Extra locale06 Post-approval tweaks
Preview · Extra revision CO-0048
One additional design revision round on approved homepage.
Price delta +$480 Timeline +2d

Payment modes

Collect Now charges on signature. Invoice mode sends a hosted payment link. Pick per order.

Collect Now
Charge on signature
Invoice
Hosted payment link

Reusable clause blocks

Save boilerplate once. Drop into any order.

Tamper-evident audit trail

Hashed, IP-logged, ESIGN + eIDAS compliant.

Smart signature windows

48-hour auto-nudge. Stale links expire.

Built to last

Designed to protect both sides of every agreement.

Legally binding signatures

ESIGN (US) and eIDAS (EU) compliant via our e-sign provider. Every signed order ships with an audit trail: signer identity, IP, timestamp, and a tamper-evident hash.

No vendor lock-in

One-click cancel. Export all change orders as CSV. Your signed PDFs remain accessible forever — we don’t hold your data hostage.

No cut of your revenue

One flat subscription. Payment processing fees go directly to the payment processor — SignDelta never takes a percentage of your change orders.

Month-one guarantee

If your first paid month doesn’t net at least one paid change order, we refund it. No forms, no questions. We want to earn the subscription.

Pricing

Start free. Upgrade when it’s paid itself off.

No credit card required to start your 30-day trial on paid plans.

Free
For trying it on one client.
$0 /mo
Forever free
  • 10 change orders / mo
  • E-signatures
  • Secure payments
  • All templates & clause blocks
  • 1 client workspace
  • "Powered by SignDelta" on sign page
Get started
Pro
For freelancers on fixed-fee.
Popular
$19 /mo
Billed monthly
  • Unlimited change orders
  • Unlimited clients & projects
  • Auto-reminders (48h)
  • Branded client portal
  • Priority email support
Start 30 days free
Studio
For agencies of 2–20.
$49 /mo
Billed monthly
  • Everything in Pro
  • 5 team seats
  • Shared templates & clause blocks
  • Team analytics
  • CSV export for accounting
Start 30 days free
Month-one money-back
If your first paid month doesn’t net at least one paid change order, we refund it. No forms, no questions.
SSL GDPR PCI via Stripe
FAQ

The questions every studio owner asks.

We just handle scope changes in email. Why add a tool?
Email is free but it’s not signed and it doesn’t trigger a payment. When the invoice arrives two weeks later, the client has forgotten what they agreed to. SignDelta closes the loop in one step: scope → signature → charge.
Will clients actually sign something for small changes?
Yes — because it’s one screen, 30 seconds, no account, no app. Our signing page is built for a phone in portrait. Clients read it, tap, and you’re paid. It’s the opposite of “paperwork”.
We already use DocuSign / QuickBooks / Notion.
Those are great tools that each solve a slice. SignDelta is the single flow: change request → signed addendum → payment — without exporting between apps. If stitching three tools together already works for your studio, genuinely no hard feelings — we’re built for the ones it doesn’t.
Is the e-signature legally binding?
Yes. Signatures are legally binding via our e-sign provider, which is ESIGN (US) and eIDAS (EU) compliant where applicable. Every signed order ships with an audit trail: signer identity, IP, timestamp, and a tamper-evident hash.
Are there fees on top of the subscription?
No SignDelta fees beyond the monthly plan. Payment processing fees (typically 2.9% + 30¢ per transaction in the US) go directly to the payment processor, not to us. Invoice mode sends a hosted payment link; Collect Now charges on signature.
What does the client see?
One page: your logo, the scope, the price delta, the timeline impact, a sign button. Optional decline with a reason. On paid plans there is no SignDelta branding. On the free plan, a small “Powered by SignDelta” badge appears at the bottom of the sign page.
What if my client ignores the email?
After 48 hours, we auto-nudge. Signature windows expire automatically on a TTL — so your dashboard doesn’t fill up with pending-forever orders. You can re-send a fresh link in one click.
Can I cancel anytime?
Yes. No contract, one-click cancel, export everything as CSV. Your signed PDFs remain accessible forever — no vendor lock-in is a core principle.

Still on the fence? support@signdelta.com — a human reads every email.

Your next
“just one more thing”
is worth something.

10 change orders per month, free forever. No card. No contract. Refund if your first paid month doesn’t net at least one paid CO.