diff --git a/docs/release.md b/docs/release.md
index b5ffa6296..f35296c42 100644
--- a/docs/release.md
+++ b/docs/release.md
@@ -82,7 +82,7 @@ npm run release:patch
 npm run release:minor
 ```
 
-This bumps the version across all workspaces, runs checks, publishes to npm, and pushes the branch + tag. The tag push triggers `Desktop Release`, `Android APK Release`, `Docker`, and `Release Notes Sync` on GitHub Actions. EAS picks up the same tag via the EAS GitHub app and starts the iOS + Android store builds in parallel (see "Mobile builds (EAS)" below) — there is no `release-mobile.yml` in this repo.
+This bumps the version across all workspaces, runs checks, publishes to npm, and pushes the branch + tag. The tag push triggers `Desktop Release`, `Android APK Release`, `Docker`, and `Release Notes Sync` on GitHub Actions. EAS picks up the same tag via the EAS GitHub app and starts the iOS + Android store builds in parallel (see "Mobile builds (EAS)" below) — there is no mobile-release workflow under `.github/workflows`.
 
 After the stable release succeeds, move npm's `beta` pointer to the new stable
 version for every published package. This changes dist-tags only; do not
@@ -129,7 +129,7 @@ npm run release:promote          # Promote X.Y.Z-beta.N to stable X.Y.Z
 
 - Beta tags are published GitHub prereleases like `v0.1.41-beta.1`
 - Betas publish npm packages with `--tag beta`, so `npm install @getpaseo/cli@beta` opts in while plain `npm install @getpaseo/cli` stays on `latest`
-- Betas publish desktop assets and APKs for testing, but they do not trigger the production web/mobile release flows
+- Betas publish desktop assets and APKs for testing. They also build iOS, upload it to TestFlight, add it to the `Paseo Beta` external group, and submit it for Beta App Review. They do not submit mobile builds to the production stores.
 - `release:promote` creates a fresh stable tag like `v0.1.41`; the final release never reuses the beta tag
 - Desktop assets now come from the Electron package at `packages/desktop`
 - Beta releases use Electron's `beta` update channel. Users on the stable channel only receive stable releases; users on the beta channel receive beta releases and the final stable release when it is published.
@@ -238,9 +238,11 @@ iOS and Android store builds are not in `.github/workflows`. They are triggered
 - **iOS (TestFlight + App Store)** — EAS builds with profile `production`, uploads to TestFlight, and a Fastlane lane submits the build for App Store review.
 - **Android APK (GitHub Release asset)** — separate, via `.github/workflows/android-apk-release.yml`. This is the only Android-related workflow that lives in this repo.
 
-EAS uses the local app version source. `packages/app/app.config.js` derives Android `versionCode` and iOS `buildNumber` from the package version as `major * 1_000_000 + minor * 1_000 + patch`, ignoring prerelease metadata. Rebuilding the same tag produces the same native build number; if a store has already accepted a binary and you need a different binary, cut a new patch instead of relying on EAS remote auto-increment.
+EAS uses the local app version source. `packages/app/app.config.js` derives the native version from the package version. Android `versionCode` is `major * 1_000_000 + minor * 1_000 + patch`. iOS reserves 1,000 build slots per app version: beta `N` uses slot `N`, and stable uses slot `999`. For example, `0.2.6-beta.2` appears in App Store Connect as version `0.2.6` build `2006002`; stable uses build `2006999`. Rebuilding the same tag produces the same native build number; if a store has already accepted a binary and you need a different binary, cut the next beta or patch instead of relying on EAS remote auto-increment.
 
-There is no `release-mobile.yml` in this repo. Earlier versions of these docs referenced one — that workflow was removed and the EAS GitHub app handles tag triggering directly.
+Beta tags run `Release iOS Beta`. The workflow uploads the build to TestFlight, distributes it to the persistent `Paseo Beta` external group, and submits it for Beta App Review. Testers and the group are managed once in App Store Connect; releases require no dashboard action.
+
+There is no mobile-release workflow under `.github/workflows`. The EAS GitHub app reads the workflows under `packages/app/.eas/workflows` and handles tag triggering directly.
 
 ### Watching mobile builds from the terminal
 
diff --git a/packages/app/.eas/workflows/release-ios-beta.yml b/packages/app/.eas/workflows/release-ios-beta.yml
new file mode 100644
index 000000000..54c1c4be2
--- /dev/null
+++ b/packages/app/.eas/workflows/release-ios-beta.yml
@@ -0,0 +1,25 @@
+name: Release iOS Beta
+
+on:
+  push:
+    tags:
+      - "v*-beta.*"
+
+jobs:
+  build_ios:
+    name: Build iOS beta
+    type: build
+    params:
+      platform: ios
+      profile: production
+
+  distribute_ios_beta:
+    name: Distribute iOS beta
+    needs: [build_ios]
+    type: testflight
+    params:
+      build_id: ${{ needs.build_ios.outputs.build_id }}
+      profile: production
+      external_groups:
+        - Paseo Beta
+      submit_beta_review: true
diff --git a/packages/app/app.config.js b/packages/app/app.config.js
index 599d549cf..b2f2a53d8 100644
--- a/packages/app/app.config.js
+++ b/packages/app/app.config.js
@@ -3,6 +3,7 @@ const path = require("node:path");
 const pkg = require("./package.json");
 const withAndroidProfileable = require("./plugins/with-android-profileable");
 const withFdroidAutolinking = require("./plugins/with-fdroid-autolinking");
+const { getNativeReleaseVersion } = require("./native-release-version");
 const appVariant = process.env.APP_VARIANT ?? "production";
 const isFdroidBuild = process.env.PASEO_FDROID_BUILD === "1";
 const isProfileBuild = process.env.PASEO_PROFILE_BUILD === "1";
@@ -47,30 +48,6 @@ const buildProfile = isFdroidBuild
       ],
     };
 
-function getNativeBuildVersionCode(version) {
-  const match = /^(\d+)\.(\d+)\.(\d+)(?:[-+].*)?$/.exec(version);
-  if (!match) {
-    throw new Error(`Cannot derive Android versionCode from non-semver version: ${version}`);
-  }
-
-  const [, majorText, minorText, patchText] = match;
-  const major = Number(majorText);
-  const minor = Number(minorText);
-  const patch = Number(patchText);
-
-  if (minor > 999 || patch > 999) {
-    throw new Error(`Cannot derive collision-free Android versionCode from version: ${version}`);
-  }
-
-  const versionCode = major * 1_000_000 + minor * 1_000 + patch;
-
-  if (!Number.isSafeInteger(versionCode) || versionCode <= 0 || versionCode > 2_100_000_000) {
-    throw new Error(`Derived Android versionCode is out of range: ${versionCode}`);
-  }
-
-  return versionCode;
-}
-
 function resolveSecretFile(params) {
   const fromEnv = process.env[params.envKey];
   if (typeof fromEnv === "string" && fromEnv.trim().length > 0) {
@@ -113,13 +90,13 @@ const variants = {
 };
 
 const variant = variants[appVariant] ?? variants.production;
-const nativeBuildVersionCode = getNativeBuildVersionCode(pkg.version);
+const nativeReleaseVersion = getNativeReleaseVersion(pkg.version);
 
 export default {
   expo: {
     name: variant.name,
     slug: "voice-mobile",
-    version: pkg.version,
+    version: nativeReleaseVersion.appVersion,
     orientation: "portrait",
     icon: "./assets/images/icon.png",
     scheme: "paseo",
@@ -135,7 +112,7 @@ export default {
       ...(variant.googleServiceInfoPlist
         ? { googleServicesFile: variant.googleServiceInfoPlist }
         : {}),
-      buildNumber: String(nativeBuildVersionCode),
+      buildNumber: nativeReleaseVersion.iosBuildNumber,
     },
     android: {
       adaptiveIcon: {
@@ -149,7 +126,7 @@ export default {
       usesCleartextTraffic: true,
       permissions: buildProfile.androidPermissions,
       package: variant.packageId,
-      versionCode: nativeBuildVersionCode,
+      versionCode: nativeReleaseVersion.androidVersionCode,
       ...(variant.googleServicesFile ? { googleServicesFile: variant.googleServicesFile } : {}),
     },
     web: {
diff --git a/packages/app/native-release-version.js b/packages/app/native-release-version.js
new file mode 100644
index 000000000..323136d4b
--- /dev/null
+++ b/packages/app/native-release-version.js
@@ -0,0 +1,41 @@
+const versionPattern = /^(\d+)\.(\d+)\.(\d+)(?:-beta\.(\d+))?$/;
+const stableIosBuildSlot = 999;
+
+function getNativeReleaseVersion(version) {
+  const match = versionPattern.exec(version);
+  if (!match) {
+    throw new Error(`Cannot derive native release version from unsupported version: ${version}`);
+  }
+
+  const [, majorText, minorText, patchText, betaText] = match;
+  const major = Number(majorText);
+  const minor = Number(minorText);
+  const patch = Number(patchText);
+  const betaNumber = betaText === undefined ? null : Number(betaText);
+
+  if (minor > 999 || patch > 999) {
+    throw new Error(`Cannot derive collision-free native version from: ${version}`);
+  }
+  if (betaNumber !== null && (betaNumber < 1 || betaNumber >= stableIosBuildSlot)) {
+    throw new Error(`iOS beta number must be between 1 and 998: ${version}`);
+  }
+
+  const versionCode = major * 1_000_000 + minor * 1_000 + patch;
+  if (!Number.isSafeInteger(versionCode) || versionCode <= 0 || versionCode > 2_100_000_000) {
+    throw new Error(`Derived Android versionCode is out of range: ${versionCode}`);
+  }
+
+  const iosBuildSlot = betaNumber ?? stableIosBuildSlot;
+  const iosBuildNumber = versionCode * 1_000 + iosBuildSlot;
+  if (!Number.isSafeInteger(iosBuildNumber)) {
+    throw new Error(`Derived iOS buildNumber is out of range: ${iosBuildNumber}`);
+  }
+
+  return {
+    appVersion: `${major}.${minor}.${patch}`,
+    androidVersionCode: versionCode,
+    iosBuildNumber: String(iosBuildNumber),
+  };
+}
+
+module.exports = { getNativeReleaseVersion };
diff --git a/packages/app/native-release-version.test.ts b/packages/app/native-release-version.test.ts
new file mode 100644
index 000000000..ca4f8d506
--- /dev/null
+++ b/packages/app/native-release-version.test.ts
@@ -0,0 +1,27 @@
+import { describe, expect, it } from "vitest";
+
+const { getNativeReleaseVersion } = require("./native-release-version");
+
+describe("native release version", () => {
+  it("reserves the final iOS build slot for a stable release", () => {
+    expect(getNativeReleaseVersion("0.2.6")).toEqual({
+      appVersion: "0.2.6",
+      androidVersionCode: 2006,
+      iosBuildNumber: "2006999",
+    });
+  });
+
+  it("gives each beta a unique iOS build slot under the stable app version", () => {
+    expect(getNativeReleaseVersion("0.2.6-beta.2")).toEqual({
+      appVersion: "0.2.6",
+      androidVersionCode: 2006,
+      iosBuildNumber: "2006002",
+    });
+  });
+
+  it("rejects beta numbers that consume the stable iOS build slot", () => {
+    expect(() => getNativeReleaseVersion("0.2.6-beta.999")).toThrow(
+      "iOS beta number must be between 1 and 998",
+    );
+  });
+});
diff --git a/packages/app/vitest.config.ts b/packages/app/vitest.config.ts
index 2e86596b7..da38efb81 100644
--- a/packages/app/vitest.config.ts
+++ b/packages/app/vitest.config.ts
@@ -22,7 +22,7 @@ export default defineConfig({
         test: {
           name: "unit",
           environment: "node",
-          include: ["src/**/*.{test,spec}.{ts,tsx}"],
+          include: ["src/**/*.{test,spec}.{ts,tsx}", "native-release-version.test.ts"],
           setupFiles: [path.resolve(__dirname, "vitest.setup.ts")],
           exclude: [...configDefaults.exclude, "e2e/**", "src/**/*.browser.{test,spec}.{ts,tsx}"],
         },