diff --git a/CHANGELOG.md b/CHANGELOG.md
index 92beca0..a23e6b7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@ All notable changes to `@webspellchecker/wproofreader-learnosity`.
 
 The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
+## [2.1.0]
+
+### Changed
+
+- Default export only.
+- The `appType` partner tag sent to WProofreader is `wpr_learnosity`.
+
 ## [2.0.2]
 
 ### Changed
@@ -81,6 +88,7 @@ Initial public release.
 - **Configurable WProofreader bundle URL** via `bundleUrl`, for customers running WProofreader from a non-default CDN host.
 - **Apache-2.0 licensed.**
 
+[2.1.0]: https://github.com/WebSpellChecker/wproofreader-learnosity/releases/tag/v2.1.0
 [2.0.2]: https://github.com/WebSpellChecker/wproofreader-learnosity/releases/tag/v2.0.2
 [2.0.0]: https://github.com/WebSpellChecker/wproofreader-learnosity/releases/tag/v2.0.0
 [1.2.1]: https://github.com/WebSpellChecker/wproofreader-learnosity/releases/tag/v1.2.1
diff --git a/README.md b/README.md
index 2158a60..0215173 100644
--- a/README.md
+++ b/README.md
@@ -13,25 +13,19 @@ npm install @webspellchecker/wproofreader-learnosity
 ```
 
 ```js
-import { LearnosityWProofreader } from '@webspellchecker/wproofreader-learnosity';
+import LearnosityWProofreader from '@webspellchecker/wproofreader-learnosity';
 
 LearnosityWProofreader.init({
   wproofreader: { serviceId: 'YOUR_WPROOFREADER_SERVICE_ID' }
 });
 ```
 
-The plugin is available as both a named and a default export, so a default import works too:
-
-```js
-import LearnosityWProofreader from '@webspellchecker/wproofreader-learnosity';
-```
-
 ### Via `<script>` tag (non-Node host apps)
 
 For host apps where adding a bundler is overkill (classic HTML, PHP, Python, Java, ASP.NET, Ruby), load the plugin from jsDelivr:
 
 ```html
-<script src="https://cdn.jsdelivr.net/npm/@webspellchecker/wproofreader-learnosity@2.0.2/dist/wproofreader-learnosity.min.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/@webspellchecker/wproofreader-learnosity@latest/dist/wproofreader-learnosity.min.js"></script>
 <script>
   LearnosityWProofreader.init({
     wproofreader: { serviceId: 'YOUR_WPROOFREADER_SERVICE_ID' }
@@ -42,7 +36,7 @@ For host apps where adding a bundler is overkill (classic HTML, PHP, Python, Jav
 ## Quickstart
 
 ```js
-import { LearnosityWProofreader } from '@webspellchecker/wproofreader-learnosity';
+import LearnosityWProofreader from '@webspellchecker/wproofreader-learnosity';
 
 // Before Learnosity widgets render.
 LearnosityWProofreader.init({
diff --git a/package.json b/package.json
index 72fd2d1..a148bd5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@webspellchecker/wproofreader-learnosity",
-  "version": "2.0.2",
+  "version": "2.1.0",
   "description": "WProofreader for Learnosity. Spelling, grammar and style assistance inside Learnosity rich-text widgets.",
   "type": "module",
   "main": "src/index.js",
@@ -18,7 +18,7 @@
   "scripts": {
     "test": "node --test --import ./tests/register-stubs.mjs tests/*.test.js",
     "build": "rm -rf dist && npm run build:iife && npm run build:esm",
-    "build:iife": "esbuild src/index.js --bundle --format=iife --global-name=LearnosityWProofreader '--footer:js=LearnosityWProofreader=LearnosityWProofreader.LearnosityWProofreader;' --minify --outfile=dist/wproofreader-learnosity.min.js",
+    "build:iife": "esbuild src/index.js --bundle --format=iife --global-name=LearnosityWProofreader '--footer:js=LearnosityWProofreader=LearnosityWProofreader.default;' --minify --outfile=dist/wproofreader-learnosity.min.js",
     "build:esm": "esbuild src/index.js --bundle --format=esm --minify --outfile=dist/wproofreader-learnosity.esm.js",
     "prepack": "npm run build"
   },
diff --git a/src/config.js b/src/config.js
index 247e79e..5845dda 100644
--- a/src/config.js
+++ b/src/config.js
@@ -17,7 +17,7 @@ export const SURFACE_GLOBALS = {
 // explicitly with `surfaces: ['questions', 'items', 'author']`.
 export const DEFAULT_SURFACES = ['author'];
 
-export const APP_TYPE = 'learnosity_extension';
+export const APP_TYPE = 'wpr_learnosity';
 
 /*
  * Split options into the WProofreader block (forwarded to the SDK's init()
diff --git a/src/index.d.ts b/src/index.d.ts
index 5e9a1fe..99f42e7 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -27,7 +27,7 @@ export interface InitOptions {
   customSelectors?: ReadonlyArray<string>;
 }
 
-export declare class LearnosityWProofreader {
+declare class LearnosityWProofreader {
   static init(options?: InitOptions): void;
 }
 
diff --git a/src/index.js b/src/index.js
index ce4b826..bee8ee7 100644
--- a/src/index.js
+++ b/src/index.js
@@ -7,7 +7,7 @@
  * creation are delegated to the WProofreader SDK; this class only decides which
  * editors to attach to and cleans them up when they leave the DOM.
  *
- *   import { LearnosityWProofreader } from '@webspellchecker/wproofreader-learnosity';
+ *   import LearnosityWProofreader from '@webspellchecker/wproofreader-learnosity';
  *   LearnosityWProofreader.init({ wproofreader: { serviceId: '...' } });
  */
 
@@ -227,5 +227,6 @@ class LearnosityWProofreader {
   }
 }
 
-export { LearnosityWProofreader };
+// Default export:
+//   import LearnosityWProofreader from '@webspellchecker/wproofreader-learnosity';
 export default LearnosityWProofreader;
diff --git a/tests/config.test.js b/tests/config.test.js
index 93a0963..dbad23f 100644
--- a/tests/config.test.js
+++ b/tests/config.test.js
@@ -20,7 +20,7 @@ test('serviceId path: Cloud config with grammar/autocorrect/appType defaults', (
   assert.equal(config.wproofreader.serviceId, 'svc-123');
   assert.equal(config.wproofreader.enableGrammar, true);
   assert.equal(config.wproofreader.autocorrect, true);
-  assert.equal(config.wproofreader.appType, 'learnosity_extension');
+  assert.equal(config.wproofreader.appType, 'wpr_learnosity');
 });
 
 test('self-hosted service options pass through unchanged', () => {
@@ -50,12 +50,12 @@ test('enableGrammar and autocorrect can be turned off explicitly', () => {
 test('appType is set to the fixed partner tag', () => {
   const config = buildConfig({ wproofreader: { serviceId: 'svc' } });
   assert.equal(config.wproofreader.appType, APP_TYPE);
-  assert.equal(APP_TYPE, 'learnosity_extension');
+  assert.equal(APP_TYPE, 'wpr_learnosity');
 });
 
 test('appType is not caller-configurable: a supplied value is ignored', () => {
   const config = buildConfig({ wproofreader: { serviceId: 'svc', appType: 'custom_partner' } });
-  assert.equal(config.wproofreader.appType, 'learnosity_extension');
+  assert.equal(config.wproofreader.appType, 'wpr_learnosity');
 });
 
 test('explicit wproofreader.lang overrides defaultLang', (t) => {
diff --git a/tests/connector.test.js b/tests/connector.test.js
index 0c035f0..c5e4187 100644
--- a/tests/connector.test.js
+++ b/tests/connector.test.js
@@ -8,13 +8,13 @@ import assert from 'node:assert/strict';
 // Cache-bust each import so the connector's static state doesn't leak between tests.
 async function freshConnector() {
   const mod = await import('../src/index.js?bust=' + Math.random());
-  return mod.LearnosityWProofreader;
+  return mod.default;
 }
 
-test('exposes the API as both a named and a default export of the same object', async () => {
+test('exposes the API as a default export only (no named export)', async () => {
   const mod = await import('../src/index.js?bust=' + Math.random());
-  assert.equal(typeof mod.LearnosityWProofreader.init, 'function');
-  assert.equal(mod.default, mod.LearnosityWProofreader);
+  assert.equal(typeof mod.default.init, 'function');
+  assert.equal(mod.LearnosityWProofreader, undefined);
 });
 
 // Minimal fake element. classList is a plain array (the connector only reads
@@ -95,7 +95,7 @@ test('attaches via the SDK with the built wproofreader options incl. appType', a
   assert.equal(globalThis.__sdkInitCalls.length, 1);
   const { options } = globalThis.__sdkInitCalls[0];
   assert.equal(options.serviceId, 'svc-123');
-  assert.equal(options.appType, 'learnosity_extension');
+  assert.equal(options.appType, 'wpr_learnosity');
   assert.equal(options.enableGrammar, true);
   assert.equal(options.container, container);
 });