Mobile App Development · Travel & Hospitality

Travel App Development

Booking, check-in, and itinerary apps that keep inventory accurate across every channel a room or seat is sold through.

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How we work

A travel app sits on top of inventory that seldom belongs to the app alone. A hotel room is also sold through a global distribution system, a channel manager, and often several online travel agencies at once, and an app whose availability differs from what those systems hold creates an overbooking problem that the front desk must resolve in person. Itineraries face the same pressure. A traveler depends on the app on landing in a place with no local SIM and no working wifi, which is when its data must already be on the device.

Most of the engineering effort concentrates on keeping the app's view of inventory, pricing, and status in sync with systems it doesn't control. Real-time availability has to reconcile against a GDS or channel manager fast enough to avoid double-selling a room. Mobile check-in and digital room keys depend on a hotel's door lock hardware supporting Bluetooth or NFC, which varies by property and brand. Flight status and gate-change alerts depend on a third-party data feed being both fast and accurate, since a stale gate number sent as a push notification is worse than no notification at all.

We build travel and hospitality apps around GDS and channel manager synchronization, offline access to itineraries and passes, and the multi-currency and multi-language handling international travelers expect by default rather than as an afterthought.

The problem

How travel & hospitality projects differ

Real-time inventory sync with GDS and channel managers
Sabre, Amadeus, and channel managers like SiteMinder each expose availability and rate data differently, and an app showing stale inventory risks selling a room or seat that's already gone, creating an overbooking the property has to resolve manually.
Itineraries and passes need to work with no signal
International travelers routinely land without a working data connection, so boarding passes, hotel confirmations, and itinerary details need to be cached on the device well before departure rather than fetched on arrival.
Multi-currency and multi-language pricing display
Showing an accurate price in a traveler's home currency requires a live foreign exchange rate feed, and getting the rounding and disclosure wrong on a booking screen is a fast way to trigger a chargeback dispute.
Digital room keys depend on hardware that varies by property
Mobile check-in with a Bluetooth or NFC digital key only works if the property's door lock hardware supports it, and a chain with mixed lock vendors across its portfolio needs the app to handle both digital and traditional check-in gracefully.
Flight status alerts need to be both fast and accurate
A gate change or delay notification that arrives after the traveler has already found out from an airport screen erodes trust in the app quickly, which puts real pressure on the reliability of the underlying flight-status data feed.

Scope

Features we often include

Real-time booking and inventory sync
Availability and rate data synced against a GDS (Sabre, Amadeus) or channel manager, reducing the risk of selling inventory that's already booked elsewhere.
Mobile check-in with digital room key
Bluetooth or NFC-based digital key issued at check-in where the property's door lock hardware supports it, with a traditional check-in fallback where it doesn't.
Offline itinerary and pass access
Boarding passes and hotel confirmations cached to Apple Wallet or Google Wallet and the device itself, so airplane mode never blocks access to a confirmation.
Multi-currency, multi-language pricing
Live foreign exchange rate integration with currency and language display matched to the traveler's profile or device locale.
Flight status and gate-change notifications
Push alerts sourced from a dedicated flight-status feed, timed to reach the traveler ahead of an airport terminal screen update.
Loyalty tier tracking and redemption
Point balance, tier status, and redemption options synced from the property or airline's loyalty system, visible without a separate login.
In-app excursion and local tour booking
Booking for local tours and excursions layered onto the core reservation, giving travelers one place to plan beyond the flight or room.
Multi-property search and comparison
Search and comparison across a chain's properties with consistent pricing and availability display, useful for multi-city itineraries.

Compliance and standards

PCI DSS
GDPR
CCPA/CPRA
PSD2 strong customer authentication for EU card payments

Common integrations

Sabre
Amadeus
SiteMinder
Stripe
Apple Wallet
Google Wallet

Approach

How these projects run

We begin by confirming exactly which GDS, channel manager, or property management system holds the authoritative inventory, since every booking screen, notification, and check-in flow depends on that connection staying accurate under real booking volume, not just in a sandbox test.

Digital key and offline pass functionality get built and tested against the specific door lock hardware and wallet pass formats the property or chain actually uses, since these vary enough between vendors that a generic implementation rarely works everywhere. Builds ship to TestFlight and a Play Console closed track every two weeks so a hospitality operations team can react to check-in and notification behavior before it reaches guests.

Typical stack

Systems in this space

FAQ

Frequently asked questions

How long does it take to build a hotel app with digital room keys?

A hotel app with GDS-synced booking, mobile check-in, and a digital room key on supported lock hardware typically takes four to six months. Adding multi-property search or loyalty tier sync across a chain extends that depending on how many backend systems the app needs to read from.

Can the app integrate with our existing GDS or channel manager?

Yes, we build against Sabre, Amadeus, or a channel manager like SiteMinder depending on which system holds your authoritative inventory. The integration scope depends on what each provider's API exposes, which we confirm during discovery rather than assuming full parity across providers.

Does the travel app work if a guest has no signal after landing?

Itineraries, hotel confirmations, and boarding passes cache to the device and to Apple Wallet or Google Wallet ahead of time, so a traveler arriving with no working data connection can still access everything they booked without waiting for a fresh network request.

How does the app handle pricing for international travelers in different currencies?

We integrate a live foreign exchange rate feed and display pricing in the traveler's home currency alongside the property or airline's base currency, with disclosure handled carefully to avoid the rounding disputes that lead to chargebacks.

Can guests use the app as a digital room key instead of a physical card?

Where the property's door lock hardware supports Bluetooth or NFC, yes. Chains with mixed lock vendors across their portfolio need the app to detect which check-in method a given property supports and fall back to a traditional key card cleanly.

Do you support mobile boarding passes in Apple Wallet and Google Wallet?

Yes, boarding passes and hotel confirmations can be issued as wallet passes that update automatically on a gate or status change, which keeps the traveler's lock screen accurate without requiring them to reopen the app.