6 things to keep in mind as you evaluate a mobile app development firm:

1. Ability to ship on time
2. Client references
3. Where is design and development done?
4. Will experienced engineers be working on your app, or junior engineers?
5. Are they going to give you a white label app, or build you a fully custom app?
6. What is the app developer’s process?

The most important thing to do is evaluate mobile application development companies on their past work, and talk to some of their current and former clients. This will give you the clearest sense of the app developer’s capabilities, process, and ability to ship on time.