WristUI.Sdk

Write once for the wrist — shared watch UI across Apple Watch and Wear OS, coordinated by AvantiPoint.WristUI.Sdk. Platform SDKs remain independently usable without WristUI.

Mission fit

Fill gaps in the .NET developer experience with native platform enablement. WristUI is the shared watch UI layer inside that portfolio — not a replacement for WatchOS.Sdk, Wear OS, App Clips, or WidgetKit.

Two entry points:

Native SDK adoption — ship with an independent platform SDK.
WristUI expansion — shared watch presentation + single-project workflow when you need both watchOS and Wear OS without duplicating the small UI surface.

Write-once claims belong only on this WristUI.Sdk story (and the homepage framing for it). They do not apply to WidgetKit or App Clips pages.

Shipping artifacts

Artifact	Responsibility
`AvantiPoint.WristUI.Sdk`	Coordinate target SDKs, inject the WristUI package, templates, shared build conventions
`WristUI` (package ID)	One multi-targeted library: portable API + target-specific implementations
Existing platform SDKs	Unchanged ownership of native assembly injection (`WatchOS.Sdk` / `AvantiPoint.*.Sdk`)

Project shape

<Project Sdk="AvantiPoint.WristUI.Sdk">
  <PropertyGroup>
    <TargetFrameworks>net10.0-watchos;net10.0-wearos</TargetFrameworks>
    <OutputType>Exe</OutputType>
  </PropertyGroup>
</Project>

Pin the coordinating SDK in global.json via msbuild-sdks with a released version. WristUI is implicit; native platform references stay SDK-injected.

What stays independent

SDK-only customers do not depend on WristUI.
App Clips and WidgetKit are not auto-imported into every watch project (and are not the write-once story — see WidgetKit / App Clips).
Platform SDKs never depend on WristUI; WristUI never depends on MAUI / Uno / Avalonia cores.

Commercial note

Portfolio licensing (Community / Professional $999 / developer / year / Enterprise) is documented under Licenses and Commercial overview. Contact hello@avantipoint.com.