Fullstory vs Monte Carlo: who uses which
Customers, public proof and the companies that use both.
On usedby, 35 companies use Fullstory and 69 use Monte Carlo. 2 companies use both, including JetBlue and The Farmer's Dog. Fullstory leads among the Marketing Tech companies on usedby that use either tool, Monte Carlo among the Fintech & Payments companies.Latest check Nov 13, 2026: 104 of 104 public lines checked. Counts include every proof level, job-post signals included. A company on both tools counts at any proof level, and a job post on one side is marked as such.
Who uses Fullstory, Monte Carlo, or both
Every company with a public proof for at least one of the two tools.
33
listed for Fullstory only
2
companies use both
67
listed for Monte Carlo only
On usedby, 33 companies are listed for Fullstory only, 67 are listed for Monte Carlo only and 2 use both, out of the 102 companies listed for at least one. An absent listing does not prove non-use.
Where it lands
Recently publicly listed customers
No new public customer listing since tracking started on October 7, 2026.
Who uses both
Companies with a public line on both tools, at any proof level: the strongest proofs come first, and a job post is marked.
| Company | First public proof, Monte Carlo |
|---|---|
 JetBlue | On or before Jun 2026 |
 The Farmer's Dog | On or before Jul 2026 |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Fullstory, Monte Carlo or both: a share of the companies on usedby, not of the market.
Listed for Fullstory onlyBothListed for Monte Carlo only
More common with Fullstory
- Marketing Tech3 of the 5 Marketing Tech companies on usedby that use either tool use Fullstory.
More common with Monte Carlo
- Fintech & Payments7 of the 12 Fintech & Payments companies on usedby that use either tool use Monte Carlo.
- E-commerce & D2C4 of the 6 E-commerce & D2C companies on usedby that use either tool use Monte Carlo, 1 of them alongside Fullstory.
- Marketplace4 of the 5 Marketplace companies on usedby that use either tool use Monte Carlo.
Source: every usedby line, from confirmed proofs to job-post signals (the weakest proof level).
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Vendor facts checked: Fullstory, 0 of 5; Monte Carlo, 3 of 5. Missing facts remain unverified, not absent features.
FullstoryMonte CarloQuestions about Fullstory and Monte Carlo
Which is used more, Fullstory or Monte Carlo?
Monte Carlo has more customers on usedby: 69 against 35 for Fullstory. Fullstory leads among the Marketing Tech companies on usedby that use either tool, Monte Carlo among the Fintech & Payments companies.
Do companies use both Fullstory and Monte Carlo?
Yes. 2 companies use both on usedby, including JetBlue and The Farmer's Dog.
Who uses Fullstory?
35 companies on usedby, each with the public page that shows it. See who uses Fullstory.
Who uses Monte Carlo?
69 companies on usedby, each with the public page that shows it. See who uses Monte Carlo.
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 four proof levels: confirmed, declared by the company itself, observed or signal (a job post, the weakest). A company counts as using both tools when it has a line on each, at any level; the list shows the strongest proofs first and marks job posts.