Blue J vs Fieldguide: who uses which
Customers, public proof and the companies that use both.
On usedby, 27 companies use Blue J and 35 use Fieldguide. 1 company uses both, including RSM US. Fieldguide leads among the Accounting & Audit companies on usedby that use either tool.Latest check Oct 10, 2026: 62 of 62 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 Blue J, Fieldguide, or both
Every company with a public proof for at least one of the two tools.
26
use only Blue J
1
company uses both
34
use only Fieldguide
26 companies use only Blue J, 34 use only Fieldguide and 1 uses both, out of the 61 companies on usedby that use at least one of them.
Who uses both
Companies with a confirmed or observed line on both tools.
| Company | First public proof, Blue J |
|---|---|
 RSM US | On or before Sep 2025 |
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Blue J
FieldguideWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Blue J
this user saving 6–8 hours per week on tax research
R2 Advisors
Vendor case study, bluej.com, captured Oct 7, 2026
Time Saved Per Week: Up to 5 hours/user
McKonly & Asbury
Vendor case study, bluej.com, captured Oct 7, 2026
Fieldguide
Holbrook & Manter’s teams are already saving 35-50% in hours per engagement.
Holbrook & Manter
Vendor case study, fieldguide.com, captured Oct 7, 2026
helping reduce the amount of on-site travel by 75%
BerryDunn
Vendor case study, fieldguide.com, captured Oct 7, 2026
Questions about Blue J and Fieldguide
Which is used more, Blue J or Fieldguide?
Fieldguide has more customers on usedby: 35 against 27 for Blue J.
Do companies use both Blue J and Fieldguide?
Yes. 1 company uses both on usedby, including RSM US.
Who uses Blue J?
27 companies on usedby, each with the public page that shows it. See who uses Blue J.
Who uses Fieldguide?
35 companies on usedby, each with the public page that shows it. See who uses Fieldguide.
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.