App makers like to tout how many times their software has been downloaded because it's the only number that never goes down.
But the real question is consumer take-up, meaning, how often air travellers use their app and make it a part of their routine.
Onavo, maker of apps for data compression and data-monitoring to slash mobile charges, has ranked travel search and booking apps by the percentage of US iPhone users who activated them at least once during the last three months.
For Tnooz, the company looked at airline apps, itinerary apps like Tripit, flight tracking apps, and ancillary apps like Gate Guru.
The data shows what percentage of iPhone users use flying apps and which combinations of apps are most prevalent.
Onavo found that roughly 8% of US iPhone users used travel apps to make their travels easier over the past three months.
App Name (Aug-Sep-Oct Market Share)
United Airlines (1.6%)
Southwest Airlines (1.5%)
Fly Delta (1.3%)
American Airlines (1.3%)
Other Flying Apps:App Name (Aug-Sep-Oct Market Share)
Tripit [all versions] 1.6%
FlightTrack - Mobiata [all versions] 0.5%
Flight View 0.35%
TripTracker - PageOnce [all versions] 0.3%
The stats give a partial picture, while other data, such as on data usage for travel booking apps in general, provide more colour.