diff --git a/index.html b/index.html
index 00f1a61..2dcf41f 100644
--- a/index.html
+++ b/index.html
@@ -34,6 +34,33 @@
         .animate-fade-out {
             animation: fadeOut 0.3s ease-out;
         }
+        /* Mobile-only quick add controls. These supplement Tailwind output so the FAB stays mobile-only even when CSS is not rebuilt. */
+        #mobileQuickAddBtn {
+            display: none;
+        }
+
+        @media (max-width: 767px) {
+            #mobileQuickAddBtn {
+                display: flex;
+                left: 1.5rem;
+            }
+
+            #mobileQuickAddModal.flex {
+                align-items: flex-end;
+                padding: 0 0.75rem 0.75rem;
+            }
+
+            #mobileQuickAddModal > div {
+                max-height: 92vh;
+            }
+        }
+
+        @media (min-width: 768px) {
+            #mobileQuickAddModal,
+            #mobileQuickAddBtn {
+                display: none !important;
+            }
+        }
     </style>
     <script src="https://cdn.jsdelivr.net/npm/flatpickr"
             integrity="sha384-5JqMv4L/Xa0hfvtF06qboNdhvuYXUku9ZrhZh3bSk8VXF0A/RuSLHpLsSV9Zqhl6"
@@ -1002,6 +1029,113 @@ <h3 class="text-lg font-bold text-slate-800 flex items-center gap-2">
         </div>
     </div>
 
+
+    <!-- Mobile Quick Add Button -->
+    <button id="mobileQuickAddBtn" type="button" aria-label="Quick add income or expense"
+        class="fixed bottom-6 left-6 z-40 bg-blue-600 hover:bg-blue-700 text-white rounded-full w-14 h-14 md:hidden flex items-center justify-center shadow-xl transition-all hover:scale-105 active:scale-95">
+        <i class="ph ph-plus text-2xl"></i>
+    </button>
+
+    <!-- Mobile Quick Add Modal -->
+    <div id="mobileQuickAddModal" class="fixed inset-0 bg-slate-900/60 hidden items-end justify-center z-50 md:hidden px-3 pb-3">
+        <div class="bg-white rounded-2xl w-full max-w-md shadow-2xl overflow-hidden animate-fade-in max-h-[92vh] flex flex-col">
+            <div class="p-5 border-b border-slate-100 flex items-center justify-between flex-shrink-0">
+                <div>
+                    <h3 class="text-lg font-bold text-slate-800 flex items-center gap-2">
+                        <i class="ph ph-plus-circle text-blue-500"></i> Quick Add
+                    </h3>
+                    <p class="text-xs text-slate-500 mt-0.5">Add income or expenses from any view.</p>
+                </div>
+                <button id="closeMobileQuickAddBtn" type="button" class="text-slate-400 hover:text-slate-600 transition-colors p-1" aria-label="Close quick add">
+                    <i class="ph ph-x text-xl"></i>
+                </button>
+            </div>
+            <div class="p-5 overflow-y-auto custom-scrollbar">
+                <form id="mobileQuickAddForm" class="space-y-4">
+                    <div class="flex p-1 bg-slate-100 rounded-lg">
+                        <label class="flex-1 cursor-pointer" for="mobileQuickTypeExpense">
+                            <input type="radio" id="mobileQuickTypeExpense" name="mobileQuickType" value="expense" class="peer sr-only" checked>
+                            <div class="text-center py-2 rounded-md text-sm font-medium text-slate-500 peer-checked:bg-white peer-checked:text-rose-600 peer-checked:shadow-sm transition-all">Expense</div>
+                        </label>
+                        <label class="flex-1 cursor-pointer" for="mobileQuickTypeIncome">
+                            <input type="radio" id="mobileQuickTypeIncome" name="mobileQuickType" value="income" class="peer sr-only">
+                            <div class="text-center py-2 rounded-md text-sm font-medium text-slate-500 peer-checked:bg-white peer-checked:text-emerald-600 peer-checked:shadow-sm transition-all">Income</div>
+                        </label>
+                    </div>
+
+                    <div>
+                        <label for="mobileQuickAmount" class="block text-xs font-semibold text-slate-500 mb-1 uppercase tracking-wider">Amount</label>
+                        <div class="relative">
+                            <div class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
+                                <span id="mobileQuickCurrencySymbol" class="text-slate-400 sm:text-sm">$</span>
+                            </div>
+                            <input type="number" id="mobileQuickAmount" step="0.01" min="0.01" required placeholder="0.00"
+                                class="input-field w-full pl-8 pr-3 py-2 bg-slate-50 border border-slate-200 rounded-lg focus:outline-none text-slate-800 placeholder-slate-400">
+                        </div>
+                    </div>
+
+                    <div>
+                        <label for="mobileQuickCategory" class="block text-xs font-semibold text-slate-500 mb-1 uppercase tracking-wider">Category</label>
+                        <div class="relative">
+                            <select id="mobileQuickCategory" required class="input-field w-full pl-3 pr-8 py-2 bg-slate-50 border border-slate-200 rounded-lg focus:outline-none text-slate-800 appearance-none">
+                                <option value="" disabled selected>Select category...</option>
+                                <optgroup label="Expenses" id="mobileQuickExpenseCategories">
+                                    <option value="Food & Dining">Food & Dining</option>
+                                    <option value="Housing">Housing</option>
+                                    <option value="Transportation">Transportation</option>
+                                    <option value="Utilities">Utilities</option>
+                                    <option value="Entertainment">Entertainment</option>
+                                    <option value="Healthcare">Healthcare</option>
+                                    <option value="Shopping">Shopping</option>
+                                    <option value="Other">Other Expense</option>
+                                </optgroup>
+                                <optgroup label="Income" id="mobileQuickIncomeCategories">
+                                    <option value="Salary">Salary / Wages</option>
+                                    <option value="Freelance">Freelance</option>
+                                    <option value="Investments">Investments</option>
+                                    <option value="Gifts">Gifts</option>
+                                    <option value="Other">Other Income</option>
+                                </optgroup>
+                            </select>
+                            <i class="ph ph-caret-down absolute right-3 top-1/2 -translate-y-1/2 text-slate-400 pointer-events-none"></i>
+                        </div>
+                    </div>
+
+                    <div>
+                        <label for="mobileQuickDate" class="block text-xs font-semibold text-slate-500 mb-1 uppercase tracking-wider">Date</label>
+                        <div class="relative">
+                            <div class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none">
+                                <i class="ph ph-calendar-blank text-slate-400"></i>
+                            </div>
+                            <input type="text" id="mobileQuickDate" required placeholder="Select date..."
+                                class="input-field w-full pl-9 pr-3 py-2 bg-slate-50 border border-slate-200 rounded-lg focus:outline-none text-slate-800 placeholder-slate-400 cursor-pointer">
+                        </div>
+                    </div>
+
+                    <div>
+                        <label for="mobileQuickFamilyMember" class="block text-xs font-semibold text-slate-500 mb-1 uppercase tracking-wider">Family Member (Optional)</label>
+                        <div class="relative">
+                            <select id="mobileQuickFamilyMember" class="input-field w-full pl-3 pr-8 py-2 bg-slate-50 border border-slate-200 rounded-lg focus:outline-none text-slate-800 appearance-none">
+                                <option value="" selected>None / Myself</option>
+                            </select>
+                            <i class="ph ph-caret-down absolute right-3 top-1/2 -translate-y-1/2 text-slate-400 pointer-events-none"></i>
+                        </div>
+                    </div>
+
+                    <div>
+                        <label for="mobileQuickNote" class="block text-xs font-semibold text-slate-500 mb-1 uppercase tracking-wider">Note (Optional)</label>
+                        <input type="text" id="mobileQuickNote" placeholder="What was this for?"
+                            class="input-field w-full px-3 py-2 bg-slate-50 border border-slate-200 rounded-lg focus:outline-none text-slate-800 placeholder-slate-400">
+                    </div>
+
+                    <button type="submit" class="w-full bg-blue-600 hover:bg-blue-700 text-white font-semibold py-2.5 rounded-lg transition-colors flex items-center justify-center gap-2">
+                        <i class="ph ph-check-circle"></i> Add Entry
+                    </button>
+                </form>
+            </div>
+        </div>
+    </div>
+
     <!-- Auth Modal -->
     <div id="authModal" class="fixed inset-0 bg-slate-900/70 z-50 flex items-center justify-center p-4">
         <div class="bg-white rounded-2xl shadow-2xl w-full max-w-sm p-8">
diff --git a/script.js b/script.js
index 6211aab..c490e3f 100644
--- a/script.js
+++ b/script.js
@@ -364,6 +364,16 @@ const managedMembersList = document.getElementById('managedMembersList');
 const noMembersState = document.getElementById('noMembersState');
 const familyMemberSelect = document.getElementById('familyMember');
 
+// Mobile quick add elements
+const mobileQuickAddBtn = document.getElementById('mobileQuickAddBtn');
+const mobileQuickAddModal = document.getElementById('mobileQuickAddModal');
+const closeMobileQuickAddBtn = document.getElementById('closeMobileQuickAddBtn');
+const mobileQuickAddForm = document.getElementById('mobileQuickAddForm');
+const mobileQuickCurrencySymbol = document.getElementById('mobileQuickCurrencySymbol');
+const mobileQuickExpenseCategories = document.getElementById('mobileQuickExpenseCategories');
+const mobileQuickIncomeCategories = document.getElementById('mobileQuickIncomeCategories');
+const mobileQuickFamilyMemberSelect = document.getElementById('mobileQuickFamilyMember');
+
 // --- INITIALIZATION ---
 function init() {
     // Initialize Currency Selector
@@ -375,6 +385,12 @@ function init() {
         dateFormat: "Y-m-d",
         disableMobile: true // Ensures the custom modern UI shows on mobile devices instead of native pickers
     });
+    window.mobileQuickDatePicker = flatpickr("#mobileQuickDate", {
+        defaultDate: "today",
+        dateFormat: "Y-m-d",
+        disableMobile: true
+    });
+    updateMobileQuickCategoryOptions('expense');
 
     // Event Listeners
     currencyButton.addEventListener('click', () => {
@@ -382,6 +398,17 @@ function init() {
     });
 
     form.addEventListener('submit', addExpense);
+    mobileQuickAddForm.addEventListener('submit', addMobileQuickEntry);
+    mobileQuickAddBtn.addEventListener('click', openMobileQuickAdd);
+    closeMobileQuickAddBtn.addEventListener('click', closeMobileQuickAdd);
+    mobileQuickAddModal.addEventListener('click', (e) => {
+        if (e.target === mobileQuickAddModal) {
+            closeMobileQuickAdd();
+        }
+    });
+    document.querySelectorAll('input[name="mobileQuickType"]').forEach(radio => {
+        radio.addEventListener('change', () => updateMobileQuickCategoryOptions(radio.value));
+    });
 
     updateDarkModeToggle(document.documentElement.classList.contains('dark'));
 
@@ -593,6 +620,7 @@ function initializeCurrencySelector() {
     // Initialize with default currency
     currentCurrencyEl.textContent = currentCurrency;
     currencySymbolSpan.textContent = getCurrencySymbol(currentCurrency);
+    mobileQuickCurrencySymbol.textContent = getCurrencySymbol(currentCurrency);
     
     // Render the initial currency options
     renderCurrencyOptions('');
@@ -633,6 +661,7 @@ function selectCurrency(currency) {
     localStorage.setItem('sw_currency', currency);
     currentCurrencyEl.textContent = currency;
     currencySymbolSpan.textContent = getCurrencySymbol(currency);
+    mobileQuickCurrencySymbol.textContent = getCurrencySymbol(currency);
     
     // Update all currency displays with conversion
     updateSummary();
@@ -758,30 +787,23 @@ async function removeMember(name) {
 }
 
 function updateFamilyMemberSelect() {
-    familyMemberSelect.innerHTML = '<option value="" selected>None / Myself</option>';
-    
-    familyMembers.forEach(member => {
-        const option = document.createElement('option');
-        option.value = member;
-        option.textContent = member;
-        familyMemberSelect.appendChild(option);
+    const selects = [familyMemberSelect, mobileQuickFamilyMemberSelect].filter(Boolean);
+
+    selects.forEach(select => {
+        select.innerHTML = '<option value="" selected>None / Myself</option>';
+
+        familyMembers.forEach(member => {
+            const option = document.createElement('option');
+            option.value = member;
+            option.textContent = member;
+            select.appendChild(option);
+        });
     });
 }
 
 // --- EXPENSE HANDLING ---
-async function addExpense(e) {
-    e.preventDefault();
-
-    const type = form.type.value;
-    const amount = parseFloat(form.amount.value);
-    const category = form.category.value;
-    const date = form.date.value;
-    const familyMember = form.familyMember.value || '';
-    const note = form.note.value || '';
-
-    if (!type || Number.isNaN(amount) || !category || !date) return;
-
-    let newEntry;
+async function saveTransaction({ type, amount, category, date, familyMember = '', note = '' }) {
+    if (!type || Number.isNaN(amount) || !category || !date) return null;
 
     if (isLoggedIn) {
         try {
@@ -792,19 +814,51 @@ async function addExpense(e) {
             if (!res.ok) {
                 const err = await res.json().catch(() => ({}));
                 console.error('Failed to save expense:', err.error ?? res.status);
-                return;
+                return null;
             }
-            newEntry = mapServerExpense(await res.json());
+            return mapServerExpense(await res.json());
         } catch (err) {
             console.error('Network error saving expense:', err);
-            return;
+            return null;
         }
-    } else {
-        newEntry = { id: String(Date.now()), type, amount, category, date, familyMember, note, currency: currentCurrency };
     }
 
+    return { id: String(Date.now()), type, amount, category, date, familyMember, note, currency: currentCurrency };
+}
+
+async function refreshAfterTransactionAdded(newEntry) {
+    if (!newEntry) return;
+
     expense.unshift(newEntry);
 
+    await updateSummary();
+    await renderExpenses();
+    await updateExpenseChart();
+
+    if (currentFilter === 'income') {
+        await renderIncomeView();
+    } else if (currentFilter === 'expense') {
+        await renderExpenseView();
+    } else if (currentFilter === 'history') {
+        await renderHistoryView();
+    }
+}
+
+async function addExpense(e) {
+    e.preventDefault();
+
+    const type = form.type.value;
+    const newEntry = await saveTransaction({
+        type,
+        amount: parseFloat(form.amount.value),
+        category: form.category.value,
+        date: form.date.value,
+        familyMember: form.familyMember.value || '',
+        note: form.note.value || '',
+    });
+
+    if (!newEntry) return;
+
     // Reset form
     if (type === 'expense') {
         typeRadios[1].checked = true;
@@ -822,19 +876,26 @@ async function addExpense(e) {
     // Reset date picker to today
     window.datePicker.setDate("today");
 
-    // Update UI
-    updateSummary();
-    renderExpenses();
-    updateExpenseChart();
+    await refreshAfterTransactionAdded(newEntry);
+}
 
-    // Update current view if needed
-    if (currentFilter === 'income') {
-        renderIncomeView();
-    } else if (currentFilter === 'expense') {
-        renderExpenseView();
-    } else if (currentFilter === 'history') {
-        renderHistoryView();
-    }
+async function addMobileQuickEntry(e) {
+    e.preventDefault();
+
+    const newEntry = await saveTransaction({
+        type: mobileQuickAddForm.mobileQuickType.value,
+        amount: parseFloat(document.getElementById('mobileQuickAmount').value),
+        category: document.getElementById('mobileQuickCategory').value,
+        date: document.getElementById('mobileQuickDate').value,
+        familyMember: mobileQuickFamilyMemberSelect.value || '',
+        note: document.getElementById('mobileQuickNote').value || '',
+    });
+
+    if (!newEntry) return;
+
+    resetMobileQuickAddForm();
+    closeMobileQuickAdd();
+    await refreshAfterTransactionAdded(newEntry);
 }
 
 function updateCategoryOptions(type) {
@@ -847,6 +908,35 @@ function updateCategoryOptions(type) {
     }
 }
 
+function updateMobileQuickCategoryOptions(type) {
+    if (type === 'expense') {
+        mobileQuickExpenseCategories.style.display = '';
+        mobileQuickIncomeCategories.style.display = 'none';
+    } else {
+        mobileQuickExpenseCategories.style.display = 'none';
+        mobileQuickIncomeCategories.style.display = '';
+    }
+
+    document.getElementById('mobileQuickCategory').value = '';
+}
+
+function openMobileQuickAdd() {
+    mobileQuickAddModal.classList.remove('hidden');
+    mobileQuickAddModal.classList.add('flex');
+    document.getElementById('mobileQuickAmount').focus();
+}
+
+function closeMobileQuickAdd() {
+    mobileQuickAddModal.classList.add('hidden');
+    mobileQuickAddModal.classList.remove('flex');
+}
+
+function resetMobileQuickAddForm() {
+    mobileQuickAddForm.reset();
+    updateMobileQuickCategoryOptions('expense');
+    window.mobileQuickDatePicker.setDate("today");
+}
+
 async function deleteExpense(id) {
     if (isLoggedIn) {
         try {