Trip management (6 programs)

Pros: Share photos and maps with friends. Works offline.

Cons: In-app purchases required for some content. Photobook feature requires payment and shipping.

Pros: Very easy to use. Connects users with hot travel deals.

Cons: Quite biased in terms of deals available. A few bugs in the system.

Pros: Comprehensive flight booking and management. Real-time updates on flight status and upgrades. Digital boarding passes.

Cons: Limited utility for non-Delta flights.