Day AI vs HubSpot: who uses which
Customers, public proof and the companies that use both.
On usedby, 10 companies use Day AI and 54 use HubSpot. 1 company uses both, including Netlify. HubSpot leads among the Fintech & Payments companies on usedby that use either tool.Latest check Oct 13, 2026: 62 of 64 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 Day AI, HubSpot, or both
Every company with a public proof for at least one of the two tools.
9
use only Day AI
1
company uses both
53
use only HubSpot
9 companies use only Day AI, 53 use only HubSpot and 1 uses both, out of the 63 companies on usedby that use at least one of them.
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, HubSpot |
|---|---|
 Netlify | On or before Oct 2024 |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Day AI, HubSpot or both: a share of the companies on usedby, not of the market.
Day AI onlyBothHubSpot only
More common with HubSpot
- Fintech & Payments4 of the 7 Fintech & Payments companies on usedby that use either tool use HubSpot.
- Marketing Tech6 of the 7 Marketing Tech companies on usedby that use either tool use HubSpot.
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.
HubSpotWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Day AI
No reviewed story for Day AI yet.
HubSpot
In the past financial year, Casio achieved a 54% increase in web visits, 71% increase in new contacts and 27% increase in customers.
Casio
Vendor case study, hubspot.com, captured Oct 5, 2026
the VIP Experience team has increased GoFundMe’s repeat and referral business by 180% in just nine months
GoFundMe
Vendor case study, hubspot.com, captured Oct 5, 2026
Questions about Day AI and HubSpot
Which is used more, Day AI or HubSpot?
HubSpot has more customers on usedby: 54 against 10 for Day AI.
Do companies use both Day AI and HubSpot?
Yes. 1 company uses both on usedby, including Netlify.
Who uses Day AI?
10 companies on usedby, each with the public page that shows it. See who uses Day AI.
Who uses HubSpot?
54 companies on usedby, each with the public page that shows it. See who uses HubSpot.
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 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.