diff --git a/internal/runner/runner.go b/internal/runner/runner.go
index af04f0c..05cbf9c 100644
--- a/internal/runner/runner.go
+++ b/internal/runner/runner.go
@@ -15,8 +15,6 @@ import (
 )
 
 type Options struct {
-	BundleID        string
-	ClearState      bool
 	Duration        time.Duration
 	SnapshotTimeout time.Duration
 	IdleTimeout     time.Duration
@@ -39,20 +37,16 @@ type ViolationRecord struct {
 	Properties []string
 }
 
+// Run drives the snapshot/evaluate/release/act loop until the duration
+// elapses or the context is canceled. The caller is responsible for
+// launching the app and connecting the SDK before Run is called, and for
+// terminating the app afterwards.
 func Run(ctx context.Context, options Options) (Summary, error) {
 	if err := validate(options); err != nil {
 		return Summary{}, err
 	}
 
 	summary := Summary{StartTime: time.Now()}
-
-	if err := options.Driver.Launch(ctx, options.BundleID, options.ClearState); err != nil {
-		return summary, fmt.Errorf("launch: %w", err)
-	}
-	defer func() {
-		_ = options.Driver.Terminate(context.Background())
-	}()
-
 	deadline := summary.StartTime.Add(options.Duration)
 	stepIndex := 0
 	for time.Now().Before(deadline) {
diff --git a/internal/runner/runner_test.go b/internal/runner/runner_test.go
index 78e040f..fc241c1 100644
--- a/internal/runner/runner_test.go
+++ b/internal/runner/runner_test.go
@@ -129,7 +129,6 @@ func TestRunner_HappyPathStepsAndTraces(t *testing.T) {
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	defer cancel()
 	summary, err := Run(ctx, Options{
-		BundleID:        "com.fixture",
 		Duration:        100 * time.Millisecond,
 		SnapshotTimeout: 2 * time.Second,
 		IdleTimeout:     50 * time.Millisecond,
@@ -149,15 +148,9 @@ func TestRunner_HappyPathStepsAndTraces(t *testing.T) {
 	}
 
 	actions := state.mock.Actions()
-	if !containsAction(actions, mockdriver.ActionLaunch, "com.fixture") {
-		t.Errorf("expected Launch with com.fixture, got %v", actions)
-	}
 	if !containsAction(actions, mockdriver.ActionTapSelector, "id:next") {
 		t.Errorf("expected TapSelector with id:next, got %v", actions)
 	}
-	if !containsAction(actions, mockdriver.ActionTerminate, "") {
-		t.Errorf("expected Terminate, got %v", actions)
-	}
 }
 
 func TestRunner_ViolationSurfacesInSummary(t *testing.T) {
@@ -173,7 +166,6 @@ func TestRunner_ViolationSurfacesInSummary(t *testing.T) {
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	defer cancel()
 	summary, err := Run(ctx, Options{
-		BundleID:        "com.fixture",
 		Duration:        100 * time.Millisecond,
 		SnapshotTimeout: 2 * time.Second,
 		IdleTimeout:     50 * time.Millisecond,
@@ -223,7 +215,6 @@ func TestRunner_RecordsScreenFieldFromSnapshot(t *testing.T) {
 	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	defer cancel()
 	if _, err := Run(ctx, Options{
-		BundleID:        "com.fixture",
 		Duration:        100 * time.Millisecond,
 		SnapshotTimeout: 2 * time.Second,
 		IdleTimeout:     50 * time.Millisecond,