diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc88271..9caee90 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -30,6 +30,9 @@ are no binary releases; "version" tracks the shared `version` in the root build
 
 ### Added
 
+- **`components`** — `StepNumber` is public, with a `done` flag that swaps the
+  numeral for a check, for numbered steps an app builds from its own
+  `GroupedRow`s (e.g. rows that open a setting).
 - **`core-prefs`** — `Preferences[pref]` and `MutablePreferences[pref] = value`,
   so an app can read several prefs out of one `PrefStore.data` snapshot and
   write several in one `PrefStore.edit` without dropping to raw keys. Plus
diff --git a/components/src/main/kotlin/de/jeanlucmakiola/floret/components/InstructionSteps.kt b/components/src/main/kotlin/de/jeanlucmakiola/floret/components/InstructionSteps.kt
index e8dfa21..3571bdb 100644
--- a/components/src/main/kotlin/de/jeanlucmakiola/floret/components/InstructionSteps.kt
+++ b/components/src/main/kotlin/de/jeanlucmakiola/floret/components/InstructionSteps.kt
@@ -6,6 +6,9 @@ import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.rounded.Check
+import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
@@ -117,9 +120,11 @@ fun InstructionSteps(
  * accent is what marks the column as a sequence rather than a list of unrelated
  * settings, and it holds that reading at a glance without a rule down the side.
  *
+ * Public for steps an app builds from its own rows, e.g. ones that open a setting.
+ * [done] swaps the numeral for a check once the step has been carried out.
  */
 @Composable
-private fun StepNumber(number: Int) {
+fun StepNumber(number: Int, done: Boolean = false) {
     Box(
         modifier = Modifier
             .size(StepNumberSize)
@@ -127,12 +132,21 @@ private fun StepNumber(number: Int) {
             .background(MaterialTheme.colorScheme.primary),
         contentAlignment = Alignment.Center,
     ) {
-        Text(
-            text = number.toString(),
-            style = MaterialTheme.typography.labelLarge,
-            fontWeight = FontWeight.SemiBold,
-            color = MaterialTheme.colorScheme.onPrimary,
-        )
+        if (done) {
+            Icon(
+                imageVector = Icons.Rounded.Check,
+                contentDescription = null,
+                tint = MaterialTheme.colorScheme.onPrimary,
+                modifier = Modifier.size(18.dp),
+            )
+        } else {
+            Text(
+                text = number.toString(),
+                style = MaterialTheme.typography.labelLarge,
+                fontWeight = FontWeight.SemiBold,
+                color = MaterialTheme.colorScheme.onPrimary,
+            )
+        }
     }
 }