The more road warriors travel, the more mobile apps they tend to use.

And, frequent business travelers most frequently use airline apps over maps and hotel apps.

These were some of the findings in a just-released KRC Research study, commissioned by Concur, on the mobile and expense-reporting habits of business travelers. For the August 13 to August 21 survey, KRC Research interviewed 1,000 business travelers in the U.S. and 500 in Canada who routinely travel for business and submit expense reports.

Some of the findings seem like common sense: The road warriors who travel most frequently tend to dig into more apps in their wanderings.

The survey found, for instance, that 32% of business travelers who take at least three trips per month use five or more apps compared with just 13% who take fewer than two trips per month.

Indeed, 62% of the business travelers indicated they rely on apps each time they travel.

And, the most popular mobile tools for travel were airline apps (44%), map apps (41%), and hotel apps (30%), the survey found.

Concur, a travel and expense-reporting tech company (which also owns TripIt and its app), was interested in business travelers views on expense reporting, and 80% of the business travelers surveyed indicated that filing expense reports when the trip is finished increases their stress.

And, a third of those surveyed responded that the difficulties in traveling for business detract from their job satisfaction.

In other words, business travel can be a hassle, and expense reporting an even larger one.

Concur says nearly 1 million users have downloaded its travel and expense mobile app, and downloads have increased 49% compared with a year ago.

Tags: apps, maps