Offline-first field apps
Every record is written to the phone first, then sent from a queue.
Mobile
iOS app development services for drivers, engineers and field crews
Native iOS apps that write to the phone first and sync later. Our driver app held 71 queued records through a 2.5-hour outage and lost none.
38Drivers on the app by week three
71Queued records delivered after a 2.5-hour outage
0Records lost in that outage
Xcode 26Required for App Store uploads from April 2026
What we build
What we build for iOS
Proof of delivery
Receiver name, PO number, photo and signature before a drop can close.
Limited background location
GPS only between 06:00 and 18:00, and only once a trip is underway.
XCTest coverage
XCTest for the app, Playwright for the console beside it.
Architecture
Where the iOS app sits in a build
A native iOS app in a fleet platform
Phone
Native iOS appSQLite on the device
API
FastAPIPython 3.13
Data
PostgreSQL and PostGISStops and geofences
RedisSync queue
Console
React 18 consoleDispatch screens
From TruckFleet Labs, a dispatch console and driver app for a 42-truck operator.
Offline
What happens in a basement loading bay
How the driver app handles a dead signal
Driver
Closes a dropName, PO number, photo, signature
Phone
SQLite on deviceWritten first
Visible queueThe driver sees what is waiting
Network
Signal returnsThe queue drains by itself
Server
FastAPI and PostgreSQLReceives the drained queue
From TruckFleet Labs. Loading bays, basements and steel-framed units kill mobile data, so the app never needs it at the moment of delivery.
Builds
The iOS build we can show you
Logistics, fleet operations
TruckFleet Labs
A native iOS driver app for 38 drivers, with signature capture, a visible sync queue and location tracking limited to the dispatch window.
6 to 1Paperwork disputes a month, from photo and signature alone
Fit check
When native iOS is the right call
Pick native iOS when
- Users work in basements, sites or loading bays with poor signal
- The app captures photos, signatures or location
- Your fleet or crew all use iPhones
Look elsewhere when
- You need Android on day one, where we compare React Native and .NET MAUI
- The app is mostly a web view of a site you already have
- You have no iOS users yet and want to test the idea first
Related: Python, React, React Native, Xamarin and .NET MAUI, and the logistics sector.
Stack
What an iOS app usually ships with
PythonReact
TypeScript
Docker
React Native
XamarinFAQs
What buyers ask first
How does the app behave with no signal?
Every record is written to the phone first and sent from a queue the driver can see. In a 2.5-hour sync outage on TruckFleet, 71 queued records were delivered automatically with no data loss.
Native iOS or cross-platform?
Our driver app is native iOS with SQLite on the device. If you need Android as well, we compare React Native and .NET MAUI with you before choosing.
What does the App Store require of new builds?
Starting April 2026, Apple requires apps uploaded to App Store Connect to be built with Xcode 26 or later using the iOS 26 SDK.
Can you limit background location?
Yes. On TruckFleet the app tracks GPS only between 06:00 and 18:00, and only once a trip is underway.
Tell us where your users lose signal
Thirty minutes on your workflow, your devices and your sync needs. No sales pitch.