Ironclad vs Spellbook: who uses which
Customers, public proof and the companies that use both.
On usedby, 58 companies use Ironclad and 27 use Spellbook. 1 company uses both, including Dropbox. Ironclad leads among the DevTools & Infrastructure companies on usedby that use either tool.Latest check Oct 8, 2026: 80 of 85 public lines checked. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side.
Who uses Ironclad, Spellbook, or both
Every company with a public proof for at least one of the two tools.
57
use only Ironclad
1
company uses both
26
use only Spellbook
57 companies use only Ironclad, 26 use only Spellbook and 1 uses both, out of the 84 companies on usedby that use at least one of them.
Where it lands
Newest customers
We have not started tracking changes for Ironclad yet.
Where it lands
Newest customers
No new customer since tracking started on October 8, 2026.
Who uses both
Companies with a confirmed or observed line on both tools.
| Company | First public proof, Ironclad |
|---|---|
 Dropbox | On or before Oct 2024 |
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Ironclad
SpellbookWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Ironclad
120 users across 12 workflows
Vinted
Vendor case study, ironcladapp.com, published Sep 23, 2025
Now for complex agreements, “It’s more like 3-5 days.”
Vontier
Vendor case study, ironcladapp.com, published Jan 5, 2026
Spellbook
Spellbook probably helps me bill an extra hour a day. Maybe more.
KMSC Law LLP
Vendor case study, spellbook.com, captured Oct 8, 2026
How Elevare Law uses Spellbook
Elevare Law
Vendor case study, spellbook.com, captured Oct 8, 2026
Questions about Ironclad and Spellbook
Which is used more, Ironclad or Spellbook?
Ironclad has more customers on usedby: 58 against 27 for Spellbook.
Do companies use both Ironclad and Spellbook?
Yes. 1 company uses both on usedby, including Dropbox.
Who uses Ironclad?
58 companies on usedby, each with the public page that shows it. See who uses Ironclad.
Who uses Spellbook?
27 companies on usedby, each with the public page that shows it. See who uses Spellbook.
How does usedby count customers?
A company counts when a public page shows it: a vendor's customer page, a case study, a press release or a job post, most saved with a dated capture. Every line is a customer, at one of three proof levels: confirmed, observed or signal (a job post, the weakest). A company is named as using both tools when its lines on both are confirmed or observed.