diff --git a/src/App.tsx b/src/App.tsx
index 2bf67d6..8ad21a7 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -6,7 +6,6 @@ import { HomeScreen } from './screens/HomeScreen';
 import { StartPickListScreen } from './screens/StartPickListScreen';
 import { PickListsScreen } from './screens/PickListsScreen';
 import { ActivePickListScreen } from './screens/ActivePickListScreen';
-import { AddItemScreen } from './screens/AddItemScreen';
 import { ManageProductsScreen } from './screens/ManageProductsScreen';
 import { ManageAreasScreen } from './screens/ManageAreasScreen';
 import { ManageCategoriesScreen } from './screens/ManageCategoriesScreen';
@@ -31,7 +30,6 @@ const AppRoutes = () => {
         <Route path="/start" element={<StartPickListScreen />} />
         <Route path="/pick-lists" element={<PickListsScreen />} />
         <Route path="/pick-lists/:id" element={<ActivePickListScreen />} />
-        <Route path="/pick-lists/:id/add-item" element={<AddItemScreen />} />
         <Route path="/products" element={<ManageProductsScreen />} />
         <Route path="/categories" element={<ManageCategoriesScreen />} />
         <Route path="/areas" element={<ManageAreasScreen />} />
diff --git a/src/screens/ActivePickListScreen.test.tsx b/src/screens/ActivePickListScreen.test.tsx
new file mode 100644
index 0000000..69cd8be
--- /dev/null
+++ b/src/screens/ActivePickListScreen.test.tsx
@@ -0,0 +1,136 @@
+import { MemoryRouter, Route, Routes } from 'react-router-dom';
+import { render, screen, within } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { describe, expect, it, vi, beforeEach } from 'vitest';
+import { ActivePickListScreen } from './ActivePickListScreen';
+import { PickItem } from '../models/PickItem';
+
+const addMock = vi.fn();
+const updateMock = vi.fn();
+const pickItemsMock = vi.fn<PickItem[], []>();
+
+vi.mock('../hooks/dataHooks', () => ({
+  usePickItems: () => pickItemsMock(),
+  useProducts: () => [
+    {
+      id: 'prod-1',
+      name: 'Cola',
+      category: 'Drinks',
+      unit_type: 'unit',
+      bulk_name: 'box',
+      barcode: '111',
+      archived: false,
+      created_at: 0,
+      updated_at: 0,
+    },
+    {
+      id: 'prod-2',
+      name: 'Chips',
+      category: 'Snacks',
+      unit_type: 'unit',
+      bulk_name: 'box',
+      barcode: '222',
+      archived: false,
+      created_at: 0,
+      updated_at: 0,
+    },
+  ],
+  usePickList: () => ({ id: 'list-1', area_id: 'area-1', created_at: 0 }),
+  useAreas: () => [{ id: 'area-1', name: 'Front Counter', created_at: 0, updated_at: 0 }],
+}));
+
+vi.mock('../context/DBProvider', () => ({
+  useDatabase: () => ({
+    pickItems: {
+      add: addMock,
+      update: updateMock,
+      get: vi.fn(),
+      delete: vi.fn(),
+    },
+  }),
+}));
+
+describe('ActivePickListScreen product search', () => {
+  beforeEach(() => {
+    addMock.mockReset();
+    updateMock.mockReset();
+    pickItemsMock.mockReturnValue([]);
+  });
+
+  it('filters the product list based on the search query', async () => {
+    const user = userEvent.setup();
+
+    render(
+      <MemoryRouter initialEntries={['/pick-lists/1']}>
+        <Routes>
+          <Route path="/pick-lists/:id" element={<ActivePickListScreen />} />
+        </Routes>
+      </MemoryRouter>,
+    );
+
+    const combobox = screen.getByRole('combobox');
+    await user.type(combobox, 'cola');
+
+    expect(await screen.findByRole('option', { name: /cola \(drinks\)/i })).toBeVisible();
+    expect(screen.queryByRole('option', { name: /chips \(snacks\)/i })).not.toBeInTheDocument();
+  });
+
+  it('adds a pick item when a product is selected', async () => {
+    const user = userEvent.setup();
+
+    render(
+      <MemoryRouter initialEntries={['/pick-lists/1']}>
+        <Routes>
+          <Route path="/pick-lists/:id" element={<ActivePickListScreen />} />
+        </Routes>
+      </MemoryRouter>,
+    );
+
+    const combobox = screen.getByRole('combobox');
+    await user.click(combobox);
+
+    const listbox = await screen.findByRole('listbox');
+    await user.click(within(listbox).getByRole('option', { name: /cola \(drinks\)/i }));
+
+    expect(addMock).toHaveBeenCalledTimes(1);
+    expect(addMock.mock.calls[0][0]).toMatchObject({
+      product_id: 'prod-1',
+      quantity: 1,
+      is_carton: false,
+    });
+  });
+
+  it('updates an existing pick item when the same packaging is selected', async () => {
+    pickItemsMock.mockReturnValue([
+      {
+        id: 'item-1',
+        pick_list_id: 'list-1',
+        product_id: 'prod-1',
+        quantity: 2,
+        is_carton: false,
+        status: 'pending',
+        created_at: 0,
+        updated_at: 0,
+      },
+    ]);
+
+    const user = userEvent.setup();
+
+    render(
+      <MemoryRouter initialEntries={['/pick-lists/1']}>
+        <Routes>
+          <Route path="/pick-lists/:id" element={<ActivePickListScreen />} />
+        </Routes>
+      </MemoryRouter>,
+    );
+
+    const combobox = screen.getByRole('combobox');
+    await user.click(combobox);
+
+    const listbox = await screen.findByRole('listbox');
+    await user.click(within(listbox).getByRole('option', { name: /cola \(drinks\)/i }));
+
+    expect(updateMock).toHaveBeenCalledWith('item-1', expect.objectContaining({ quantity: 3 }));
+    expect(addMock).not.toHaveBeenCalled();
+  });
+});
diff --git a/src/screens/ActivePickListScreen.tsx b/src/screens/ActivePickListScreen.tsx
index ecc461e..74e96b4 100644
--- a/src/screens/ActivePickListScreen.tsx
+++ b/src/screens/ActivePickListScreen.tsx
@@ -1,10 +1,23 @@
-import { Button, Container, Stack, Typography } from '@mui/material';
-import { useParams, useNavigate, Link as RouterLink } from 'react-router-dom';
-import { useMemo } from 'react';
+import {
+  Autocomplete,
+  Button,
+  Checkbox,
+  Container,
+  FormControlLabel,
+  InputAdornment,
+  Stack,
+  TextField,
+  Typography,
+} from '@mui/material';
+import SearchIcon from '@mui/icons-material/Search';
+import { useParams, useNavigate } from 'react-router-dom';
+import { useEffect, useMemo, useState } from 'react';
+import { v4 as uuidv4 } from 'uuid';
 import { useAreas, usePickItems, usePickList, useProducts } from '../hooks/dataHooks';
 import { useDatabase } from '../context/DBProvider';
 import { PickItemRow } from '../components/PickItemRow';
 import { PickItem } from '../models/PickItem';
+import { Product } from '../models/Product';
 
 export const ActivePickListScreen = () => {
   const { id } = useParams();
@@ -14,12 +27,38 @@ export const ActivePickListScreen = () => {
   const areas = useAreas();
   const db = useDatabase();
   const navigate = useNavigate();
+  const [selectedProduct, setSelectedProduct] = useState<Product | null>(null);
+  const [query, setQuery] = useState('');
+  const [quantity, setQuantity] = useState(1);
+  const [isCarton, setIsCarton] = useState(false);
 
   const areaName = useMemo(
     () => areas.find((area) => area.id === pickList?.area_id)?.name ?? 'Area',
     [areas, pickList?.area_id],
   );
 
+  const filteredProducts = useMemo(() => {
+    const normalizedQuery = query.trim().toLowerCase();
+    if (!normalizedQuery) return products;
+
+    return products.filter((product) => {
+      const searchableText = `${product.name} ${product.category} ${product.barcode ?? ''}`.toLowerCase();
+      return searchableText.includes(normalizedQuery);
+    });
+  }, [products, query]);
+
+  useEffect(() => {
+    if (!selectedProduct) return;
+    if (!filteredProducts.some((product) => product.id === selectedProduct.id)) {
+      setSelectedProduct(null);
+    }
+  }, [filteredProducts, selectedProduct]);
+
+  useEffect(() => {
+    setQuantity(1);
+    setIsCarton(false);
+  }, [selectedProduct]);
+
   const handleIncrementQuantity = async (itemId: string) => {
     const existing = await db.pickItems.get(itemId);
     if (!existing) return;
@@ -61,17 +100,121 @@ export const ActivePickListScreen = () => {
     await db.pickItems.delete(itemId);
   };
 
+  const addOrUpdateItem = async (product: Product) => {
+    if (!id || quantity <= 0) return;
+
+    const existing = items.find(
+      (item) => item.product_id === product.id && item.is_carton === isCarton,
+    );
+
+    if (existing) {
+      await db.pickItems.update(existing.id, {
+        quantity: existing.quantity + quantity,
+        updated_at: Date.now(),
+      });
+    } else {
+      await db.pickItems.add({
+        id: uuidv4(),
+        pick_list_id: id,
+        product_id: product.id,
+        quantity,
+        is_carton: isCarton,
+        status: 'pending',
+        created_at: Date.now(),
+        updated_at: Date.now(),
+      });
+    }
+
+    setSelectedProduct(null);
+    setQuery('');
+    setQuantity(1);
+    setIsCarton(false);
+  };
+
   const returnToLists = () => {
     navigate('/pick-lists');
   };
 
+  const packagingLabel = isCarton
+    ? selectedProduct?.bulk_name ?? 'Cartons'
+    : selectedProduct?.unit_type ?? 'Units';
+  const quantityHelperText = selectedProduct
+    ? `Enter ${packagingLabel.toLowerCase()} to pick`
+    : 'Select a product to add it to the list';
+  const cartonCheckboxLabel = selectedProduct?.bulk_name
+    ? `Carton (${selectedProduct.bulk_name})`
+    : 'Carton pick';
+
   return (
     <Container sx={{ py: 4 }}>
-      <Stack direction="row" justifyContent="space-between" alignItems="center" mb={2}>
+      <Stack spacing={2} mb={2}>
         <Typography variant="h5">{areaName} List</Typography>
-        <Button component={RouterLink} to={`/pick-lists/${id}/add-item`} variant="contained">
-          Add Item
-        </Button>
+        <Stack spacing={1.5} sx={{ p: 2, borderRadius: 1, bgcolor: 'grey.50' }}>
+          <Typography variant="subtitle2" color="text.secondary">
+            Add products to this list
+          </Typography>
+          <Autocomplete
+            options={filteredProducts}
+            getOptionLabel={(option) => `${option.name} (${option.category})`}
+            isOptionEqualToValue={(option, value) => option.id === value.id}
+            value={selectedProduct}
+            onChange={(_, value) => {
+              setSelectedProduct(value);
+              if (value) {
+                void addOrUpdateItem(value);
+              }
+            }}
+            inputValue={query}
+            onInputChange={(_, value, reason) => {
+              if (reason === 'input') {
+                setQuery(value);
+              }
+
+              if (reason === 'clear') {
+                setQuery('');
+              }
+            }}
+            filterOptions={(options) => options}
+            noOptionsText={query.trim() ? 'No matching products' : 'No products available'}
+            fullWidth
+            renderInput={(params) => (
+              <TextField
+                {...params}
+                placeholder="Search products"
+                InputProps={{
+                  ...params.InputProps,
+                  startAdornment: (
+                    <>
+                      <InputAdornment position="start">
+                        <SearchIcon />
+                      </InputAdornment>
+                      {params.InputProps.startAdornment}
+                    </>
+                  ),
+                }}
+              />
+            )}
+          />
+          <Stack direction={{ xs: 'column', sm: 'row' }} spacing={1.5} alignItems="center">
+            <TextField
+              type="number"
+              label={`Quantity (${packagingLabel})`}
+              value={quantity}
+              onChange={(event) => setQuantity(Math.max(1, Number(event.target.value)))}
+              inputProps={{ min: 1 }}
+              helperText={quantityHelperText}
+              fullWidth
+            />
+            <FormControlLabel
+              control={<Checkbox checked={isCarton} onChange={(event) => setIsCarton(event.target.checked)} />}
+              label={cartonCheckboxLabel}
+              disabled={!selectedProduct}
+            />
+          </Stack>
+          <Typography variant="caption" color="text.secondary">
+            Selecting a product immediately adds it to the pick list.
+          </Typography>
+        </Stack>
       </Stack>
       {pickList?.notes ? (
         <Typography variant="body2" color="text.secondary" mb={2}>
diff --git a/src/screens/AddItemScreen.test.tsx b/src/screens/AddItemScreen.test.tsx
deleted file mode 100644
index c11b174..0000000
--- a/src/screens/AddItemScreen.test.tsx
+++ /dev/null
@@ -1,62 +0,0 @@
-import { MemoryRouter, Route, Routes } from 'react-router-dom';
-import { render, screen } from '@testing-library/react';
-import userEvent from '@testing-library/user-event';
-import { describe, expect, it, vi } from 'vitest';
-import { AddItemScreen } from './AddItemScreen';
-
-const addMock = vi.fn();
-
-vi.mock('../hooks/dataHooks', () => ({
-  usePickItems: () => [],
-  useProducts: () => [
-    {
-      id: 'prod-1',
-      name: 'Cola',
-      category: 'Drinks',
-      unit_type: 'unit',
-      bulk_name: 'box',
-      barcode: '111',
-      archived: false,
-      created_at: 0,
-      updated_at: 0,
-    },
-    {
-      id: 'prod-2',
-      name: 'Chips',
-      category: 'Snacks',
-      unit_type: 'unit',
-      bulk_name: 'box',
-      barcode: '222',
-      archived: false,
-      created_at: 0,
-      updated_at: 0,
-    },
-  ],
-}));
-
-vi.mock('../context/DBProvider', () => ({
-  useDatabase: () => ({
-    pickItems: {
-      add: addMock,
-    },
-  }),
-}));
-
-describe('AddItemScreen product search', () => {
-  it('filters the product list based on the search query', async () => {
-    const user = userEvent.setup();
-
-    render(
-      <MemoryRouter initialEntries={['/pick-lists/1/add-item']}>
-        <Routes>
-          <Route path="/pick-lists/:id/add-item" element={<AddItemScreen />} />
-        </Routes>
-      </MemoryRouter>,
-    );
-
-    await user.type(screen.getByPlaceholderText(/search products/i), 'cola');
-
-    expect(await screen.findByRole('option', { name: /cola \(drinks\)/i })).toBeVisible();
-    expect(screen.queryByRole('option', { name: /chips \(snacks\)/i })).not.toBeInTheDocument();
-  });
-});
diff --git a/src/screens/AddItemScreen.tsx b/src/screens/AddItemScreen.tsx
deleted file mode 100644
index b578d67..0000000
--- a/src/screens/AddItemScreen.tsx
+++ /dev/null
@@ -1,166 +0,0 @@
-import {
-  Autocomplete,
-  Button,
-  Checkbox,
-  Container,
-  FormControlLabel,
-  InputAdornment,
-  Stack,
-  TextField,
-  Typography,
-} from '@mui/material';
-import SearchIcon from '@mui/icons-material/Search';
-import { useEffect, useMemo, useState } from 'react';
-import { useNavigate, useParams } from 'react-router-dom';
-import { v4 as uuidv4 } from 'uuid';
-import { usePickItems, useProducts } from '../hooks/dataHooks';
-import { useDatabase } from '../context/DBProvider';
-
-export const AddItemScreen = () => {
-  const { id } = useParams();
-  const db = useDatabase();
-  const items = usePickItems(id);
-  const products = useProducts();
-  const [selectedProduct, setSelectedProduct] = useState<typeof products[number] | null>(null);
-  const [query, setQuery] = useState('');
-  const [quantity, setQuantity] = useState(1);
-  const [isCarton, setIsCarton] = useState(false);
-  const navigate = useNavigate();
-  const unitLabel = selectedProduct?.unit_type ?? 'Units';
-  const cartonLabel = selectedProduct?.bulk_name ?? 'Cartons';
-
-  const filteredProducts = useMemo(() => {
-    const normalizedQuery = query.trim().toLowerCase();
-    if (!normalizedQuery) return products;
-
-    return products.filter((product) => {
-      const searchableText = `${product.name} ${product.category} ${product.barcode ?? ''}`.toLowerCase();
-      return searchableText.includes(normalizedQuery);
-    });
-  }, [products, query]);
-
-  useEffect(() => {
-    if (!selectedProduct) return;
-    if (!filteredProducts.some((product) => product.id === selectedProduct.id)) {
-      setSelectedProduct(null);
-    }
-  }, [filteredProducts, selectedProduct]);
-
-  useEffect(() => {
-    setQuantity(1);
-    setIsCarton(false);
-  }, [selectedProduct]);
-
-  const packagingLabel = isCarton ? cartonLabel : unitLabel;
-  const quantityHelperText = selectedProduct
-    ? `Enter ${packagingLabel.toLowerCase()} to pick`
-    : 'Enter the quantity to pick';
-  const cartonCheckboxLabel = selectedProduct?.bulk_name
-    ? `Carton (${selectedProduct.bulk_name})`
-    : 'Carton pick';
-
-  const addItem = async () => {
-    const productId = selectedProduct?.id;
-
-    if (!id || !productId || quantity <= 0) return;
-
-    const existing = items.find((item) => item.product_id === productId && item.is_carton === isCarton);
-
-    if (existing) {
-      await db.pickItems.update(existing.id, {
-        quantity: existing.quantity + quantity,
-        updated_at: Date.now(),
-      });
-      navigate(`/pick-lists/${id}`);
-      return;
-    }
-
-    await db.pickItems.add({
-      id: uuidv4(),
-      pick_list_id: id,
-      product_id: productId,
-      quantity,
-      is_carton: isCarton,
-      status: 'pending',
-      created_at: Date.now(),
-      updated_at: Date.now(),
-    });
-    navigate(`/pick-lists/${id}`);
-  };
-
-  return (
-    <Container sx={{ py: 4 }}>
-      <Typography variant="h5" gutterBottom>
-        Add Item
-      </Typography>
-      <Stack spacing={2}>
-        <Autocomplete
-          options={filteredProducts}
-          getOptionLabel={(option) => `${option.name} (${option.category})`}
-          isOptionEqualToValue={(option, value) => option.id === value.id}
-          value={selectedProduct}
-          onChange={(_, value) => setSelectedProduct(value)}
-          inputValue={query}
-          onInputChange={(_, value, reason) => {
-            if (reason === 'input') {
-              setQuery(value);
-            }
-
-            if (reason === 'clear') {
-              setQuery('');
-            }
-          }}
-          filterOptions={(options) => options}
-          noOptionsText={query.trim() ? 'No matching products' : 'No products available'}
-          fullWidth
-          renderInput={(params) => (
-            <TextField
-              {...params}
-              placeholder="Search products"
-              InputProps={{
-                ...params.InputProps,
-                startAdornment: (
-                  <>
-                    <InputAdornment position="start">
-                      <SearchIcon />
-                    </InputAdornment>
-                    {params.InputProps.startAdornment}
-                  </>
-                ),
-              }}
-            />
-          )}
-        />
-        {selectedProduct && (
-          <Stack spacing={0.25} sx={{ p: 1.5, borderRadius: 1, bgcolor: 'grey.100' }}>
-            <Typography variant="subtitle2" color="text.secondary">
-              Selected product
-            </Typography>
-            <Typography variant="body1" fontWeight={600}>
-              {selectedProduct.name}
-            </Typography>
-            <Typography variant="body2" color="text.secondary">
-              {selectedProduct.category}
-            </Typography>
-          </Stack>
-        )}
-        <TextField
-          type="number"
-          label={`Quantity (${packagingLabel})`}
-          value={quantity}
-          onChange={(event) => setQuantity(Math.max(1, Number(event.target.value)))}
-          inputProps={{ min: 1 }}
-          helperText={quantityHelperText}
-        />
-        <FormControlLabel
-          control={<Checkbox checked={isCarton} onChange={(event) => setIsCarton(event.target.checked)} />}
-          label={cartonCheckboxLabel}
-          disabled={!selectedProduct}
-        />
-        <Button variant="contained" disabled={!selectedProduct} onClick={addItem}>
-          Add to List
-        </Button>
-      </Stack>
-    </Container>
-  );
-};