diff --git a/README.md b/README.md
index 94b4407..70a9f3a 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Built with Svelte for speed and simplicity. No overwhelming features, no endless
 
 ### Core Functionality
 - ✅ **Add, complete, and delete tasks** with smooth animations
-- ↩️ **Undo** - `Cmd/Ctrl+Z` brings back a deleted task, in its original position
+- ↩️ **Undo** - Deleted something by mistake? An Undo button appears, and `Cmd/Ctrl+Z` works too. The task returns to its original position
 - 📅 **Today & Tomorrow lists** - Plan ahead with separate task lists
 - 🔄 **Unfinished work carries over** - When a new day begins, tasks you didn't finish move to Today; completed ones are cleared away
 - ✏️ **Edit a task** - Fix a typo without deleting and retyping it
@@ -92,7 +92,7 @@ The date, storage, rollover, task and undo logic lives in `src/lib/` as plain mo
 - **Complete a task**: Click the checkbox next to the task
 - **Edit a task**: Click its text. Enter saves, Escape cancels, and clicking away saves too
 - **Delete a task**: Click the delete icon on the task (it shows on hover, and is always visible on touch), or press `Delete` with the task focused
-- **Undo a delete**: Press `Cmd/Ctrl+Z`. The task returns to where it was
+- **Undo a delete**: An Undo button appears for a few seconds after anything is removed. `Cmd/Ctrl+Z` does the same. Either way the task returns to where it was
 - **Move a task to Tomorrow**: Click the arrow on the task, or press `Alt+→`. From Tomorrow, the arrow points back and `Alt+←` returns it to Today
 - **Reorder tasks**: Drag with a mouse, long-press then drag on touch, or focus a task and press `Alt+↑`/`Alt+↓`
 - **Clear input**: Press Escape while the input is focused
diff --git a/src/App.svelte b/src/App.svelte
index 246e3ee..ebca6dc 100644
--- a/src/App.svelte
+++ b/src/App.svelte
@@ -62,6 +62,7 @@
     if (index === -1) return;
     undoStack.push({ type: 'delete', task: tasks[index], index });
     setTasks(taskOps.deleteTask(tasks, id));
+    showUndo('Task deleted');
   }
 
   function clearCompleted() {
@@ -74,6 +75,7 @@
     if (removed.length === 0) return;
     undoStack.push({ type: 'clearCompleted', removed });
     setTasks(taskOps.clearCompleted(tasks));
+    showUndo(removed.length === 1 ? '1 completed task cleared' : `${removed.length} completed tasks cleared`);
   }
 
   const viewingToday = $derived(selectedKey === todayKey);
@@ -129,9 +131,35 @@
     tasks = moveTaskToDay(storage, selectedKey, destination, taskId);
   }
 
+  /**
+   * Undo used to be reachable only by Cmd/Ctrl+Z, which nothing announced and
+   * which does not exist on a phone at all. This is the one moment it is worth
+   * saying something: right after work disappears. It carries the shortcut too,
+   * so a keyboard user learns it once, here, rather than from a README.
+   */
+  let undoNotice = $state(null);
+  let undoNoticeTimer = null;
+
+  const UNDO_NOTICE_MS = 7000;
+  const shortcutLabel = /Mac|iPhone|iPad/.test(navigator.platform || navigator.userAgent)
+    ? '\u2318Z'
+    : 'Ctrl+Z';
+
+  function showUndo(message) {
+    undoNotice = message;
+    clearTimeout(undoNoticeTimer);
+    undoNoticeTimer = setTimeout(() => { undoNotice = null; }, UNDO_NOTICE_MS);
+  }
+
+  function dismissUndo() {
+    clearTimeout(undoNoticeTimer);
+    undoNotice = null;
+  }
+
   function undo() {
     const entry = undoStack.pop();
     if (entry) setTasks(applyUndo(tasks, entry));
+    dismissUndo();
   }
 
   function toggleTheme() {
@@ -736,3 +764,12 @@
     </div>
   </main>
 </div>
+
+{#if undoNotice}
+  <div class="undo-toast" role="status" aria-live="polite" transition:fly={{ y: reduceMotion ? 0 : 12, duration: reduceMotion ? 0 : 200, easing: cubicOut }}>
+    <span class="undo-message">{undoNotice}</span>
+    <button class="undo-action" onclick={undo}>
+      Undo <kbd class="undo-key">{shortcutLabel}</kbd>
+    </button>
+  </div>
+{/if}
diff --git a/src/style.css b/src/style.css
index a85a91c..302b5f2 100644
--- a/src/style.css
+++ b/src/style.css
@@ -701,3 +701,80 @@ html {
   scroll-behavior: smooth;
 }
 
+
+/* Shown only after something is removed, and only long enough to act on.
+   It carries a real button because Cmd/Ctrl+Z does not exist on a phone,
+   so on touch this is the only way back. */
+.undo-toast {
+  position: fixed;
+  left: 50%;
+  transform: translateX(-50%);
+  bottom: calc(24px + env(safe-area-inset-bottom));
+  z-index: 200;
+  display: flex;
+  align-items: center;
+  gap: 16px;
+  max-width: calc(100vw - 32px);
+  padding: 12px 12px 12px 18px;
+  border-radius: 12px;
+  background-color: var(--bg-surface);
+  border: 1px solid var(--border);
+  box-shadow:
+    0 12px 28px rgba(0, 0, 0, 0.16),
+    0 4px 8px rgba(0, 0, 0, 0.08);
+  font-size: 14px;
+  color: var(--text-primary);
+}
+
+html.dark .undo-toast {
+  box-shadow:
+    0 12px 28px rgba(0, 0, 0, 0.55),
+    0 4px 8px rgba(0, 0, 0, 0.4);
+}
+
+.undo-message {
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.undo-action {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  flex-shrink: 0;
+  padding: 6px 12px;
+  border: none;
+  border-radius: 8px;
+  background: transparent;
+  font-family: inherit;
+  font-size: 14px;
+  font-weight: 500;
+  color: var(--accent-text);
+  cursor: pointer;
+  transition: background-color 200ms ease;
+}
+
+.undo-action:hover {
+  background-color: var(--hover);
+}
+
+/* Teaching the shortcut is the point, so it only shows where one exists. */
+.undo-key {
+  font-family: var(--font-family);
+  font-size: 12px;
+  color: var(--text-secondary);
+  border: 1px solid var(--border);
+  border-radius: 4px;
+  padding: 1px 5px;
+}
+
+@media (pointer: coarse) {
+  .undo-key {
+    display: none;
+  }
+
+  .undo-action {
+    min-height: 44px;
+  }
+}