Appier vs Insider One: who uses which
Customers, public proof and the companies that use both.
On usedby, 28 companies use Appier and 40 use Insider One. 4 companies use both, including L'Oréal, Toyota, and Burger King. Insider One leads among the Fashion & Apparel companies on usedby that use either tool.Latest check Oct 8, 2026: 68 of 68 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 Appier, Insider One, or both
Every company with a public proof for at least one of the two tools.
24
use only Appier
4
companies use both
36
use only Insider One
24 companies use only Appier, 36 use only Insider One and 4 use both, out of the 64 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 8, 2026.
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 |
|---|
 L'Oréal |
 Toyota |
 Burger King |
 Clarins |
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Appier
Insider OneWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Appier
No reviewed story for Appier yet.
Insider One
How Slazenger gained 49x ROI in only 8 weeks
Slazenger
Vendor case study, insiderone.com, published Aug 31, 2026
$310K in incremental revenue
Safat Home
Vendor case study, insiderone.com, published Jul 10, 2023
Questions about Appier and Insider One
Which is used more, Appier or Insider One?
Insider One has more customers on usedby: 40 against 28 for Appier.
Do companies use both Appier and Insider One?
Yes. 4 companies use both on usedby, including L'Oréal, Toyota, and Burger King.
Who uses Appier?
28 companies on usedby, each with the public page that shows it. See who uses Appier.
Who uses Insider One?
40 companies on usedby, each with the public page that shows it. See who uses Insider One.
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.