Offline
GeoPackage-backed storage
Offline maps, queued edits, sync cursors, and field data live in a standards-friendly GeoPackage workflow that works without connectivity.
Mobile
Field collection without per-user licensing.
Honua includes a .NET MAUI mobile toolkit for offline maps, forms, sync, background upload, gRPC transport, and a direction toward AR and IoT field workflows.
Capabilities
What the mobile toolkit includes.
Transport
gRPC-first access
Binary transport for large feature retrieval and collaboration flows. Roughly 60-70% less bandwidth and 5x faster parsing than XML/REST sync patterns.
Framework
MAUI cross-platform
Built on .NET MAUI with iOS, Android, and Windows support for teams already in the Microsoft ecosystem.
Field UX
Forms and record workflows
Dynamic forms, validation, calculated fields, duplicate detection, and record lifecycle management for real field operations.
AR + IoT
Beyond basic forms
AR-assisted field collection and sensor-aware workflows with Bluetooth LE, LoRa, and WiFi device integration. First open-source offering of its kind.
Sync
Background upload and conflict handling
Connectivity-aware background sync with configurable conflict resolution strategies. Works in the field, not just on conference WiFi.
Cost Comparison
What field collection costs today.
| Product | Typical cost | What you get |
|---|---|---|
| Honua Mobile | Included in the platform. No per-user field license. | MAUI mobile SDK, offline GeoPackage sync, forms, gRPC transport, AR/IoT direction. Same platform as the server and SDKs. |
| Fulcrum | $99-299 per user per month | Field collection with a separate vendor, separate licensing, and a recurring per-user cost that grows with your field team. |
| Survey123 | $25-100 per user per month | ArcGIS-tied form workflows with another seat-driven licensing layer on top of your existing Esri spend. |
SDK Components
What ships in the mobile toolkit.
| Component | Purpose | Details |
|---|---|---|
| Honua.Mobile.Sdk | Transport, auth, and client library | Connect to Honua APIs from MAUI apps with gRPC and REST support. |
| Honua.Mobile.Field | Forms, validation, record workflows | Dynamic form rendering, calculated fields, duplicate detection, and record lifecycle. |
| Honua.Mobile.Offline | GeoPackage storage and sync engine | Offline-first persistence, sync cursors, queued edits, and background reconciliation. |
| Honua.Mobile.Maui | MAUI service registration and platform integration | Dependency injection, platform-specific renderers, and native map controls. |
Performance
gRPC changes what mobile GIS feels like.
Binary transport with strong types means less bandwidth, faster sync, and fewer parsing errors than REST/XML mobile patterns. The protocol work targets roughly 60-70% bandwidth reduction and 5x faster loading in field conditions.
Open Source
The mobile toolkit is Apache 2.0.
Evaluate, fork, and build on the mobile SDK without client-side licensing ambiguity. Same open license as the JavaScript, .NET, and Python SDKs.
Next
See the pricing or try the quickstart.
After the mobile overview, the next questions are usually cost and how fast a team can get a working setup running.