On usedby, 25 companies use Gem and 32 use Phenom. No company is listed with both yet. Gem leads among the DevTools & Infrastructure companies on usedby that use either tool.Latest check Oct 7, 2026: 57 of 57 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 Gem, Phenom, or both
Every company with a public proof for at least one of the two tools.
25
use only Gem
0
companies use both
32
use only Phenom
25 companies use only Gem, 32 use only Phenom and 0 use both, out of the 57 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 6, 2026.
Where it lands
Newest customers
No new customer since tracking started on October 7, 2026.
Who uses both
Companies with a confirmed or observed line on both tools.
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Gem
PhenomWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Gem
The switch to Gem resulted in immediate time and cost savings of 40%.
Excelity
Vendor case study, gem.com, published Jun 9, 2026
Saved 3,300+ hours through automated workflows.
Octave
Vendor case study, gem.com, published Jun 9, 2026
Phenom
No reviewed story for Phenom yet.
Questions about Gem and Phenom
Which is used more, Gem or Phenom?
Phenom has more customers on usedby: 32 against 25 for Gem.
Do companies use both Gem and Phenom?
usedby has not found a company with a confirmed or observed line on both Gem and Phenom yet.
Who uses Gem?
25 companies on usedby, each with the public page that shows it. See who uses Gem.
Who uses Phenom?
32 companies on usedby, each with the public page that shows it. See who uses Phenom.
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.