diff --git a/src/ui/form-builder.ts b/src/ui/form-builder.ts
new file mode 100644
index 0000000..d242126
--- /dev/null
+++ b/src/ui/form-builder.ts
@@ -0,0 +1,355 @@
+import { App, Modal, Notice } from 'obsidian';
+import { FormDefinition, FormField, FieldType } from '../types';
+
+const FIELD_TYPES: FieldType[] = [
+  'text',
+  'textarea',
+  'number',
+  'toggle',
+  'date',
+  'dropdown',
+  'tags',
+  'note-link',
+  'folder-picker',
+  'rating',
+];
+
+/**
+ * Modal for visually editing a FormDefinition.
+ * Works on a structuredClone draft and only calls onSave on confirmation.
+ */
+export class FormBuilderModal extends Modal {
+  private draft: FormDefinition;
+  private onSave: (form: FormDefinition) => void;
+
+  constructor(
+    app: App,
+    form: FormDefinition,
+    onSave: (form: FormDefinition) => void,
+  ) {
+    super(app);
+    this.draft = structuredClone(form);
+    this.onSave = onSave;
+  }
+
+  onOpen(): void {
+    this.render();
+  }
+
+  onClose(): void {
+    this.contentEl.empty();
+  }
+
+  private render(): void {
+    const { contentEl } = this;
+    contentEl.empty();
+    contentEl.addClass('ff-builder-modal');
+
+    // --- General settings ---
+    contentEl.createEl('h2', { text: 'Form Settings' });
+
+    const generalEl = contentEl.createDiv({ cls: 'ff-builder-general' });
+
+    // Name
+    this.addTextSetting(generalEl, 'Form Name', this.draft.name, (v) => {
+      this.draft.name = v;
+    });
+
+    // Mode
+    this.addDropdownSetting(
+      generalEl,
+      'Mode',
+      ['create', 'update'],
+      this.draft.mode,
+      (v) => {
+        this.draft.mode = v as 'create' | 'update';
+        this.render(); // Re-render to show mode-specific settings
+      },
+    );
+
+    // Mode-specific settings
+    if (this.draft.mode === 'create') {
+      this.addTextSetting(
+        generalEl,
+        'Target Folder',
+        this.draft.targetFolder ?? '/',
+        (v) => {
+          this.draft.targetFolder = v;
+        },
+      );
+      this.addTextSetting(
+        generalEl,
+        'File Name Template',
+        this.draft.fileNameTemplate ?? '{{date}}-{{title}}',
+        (v) => {
+          this.draft.fileNameTemplate = v;
+        },
+      );
+      this.addTextareaSetting(
+        generalEl,
+        'Body Template',
+        this.draft.bodyTemplate ?? '',
+        (v) => {
+          this.draft.bodyTemplate = v;
+        },
+      );
+    } else {
+      this.addDropdownSetting(
+        generalEl,
+        'Target File',
+        ['active', 'prompt'],
+        this.draft.targetFile ?? 'active',
+        (v) => {
+          this.draft.targetFile = v as 'active' | 'prompt';
+        },
+      );
+    }
+
+    // --- Fields section ---
+    contentEl.createEl('h3', { text: 'Fields' });
+
+    const fieldsContainer = contentEl.createDiv({ cls: 'ff-builder-fields' });
+    this.renderFields(fieldsContainer);
+
+    // Add field button
+    const addBtn = contentEl.createEl('button', {
+      cls: 'ff-builder-add-btn',
+      text: '+ Add Field',
+    });
+    addBtn.addEventListener('click', () => {
+      const newField: FormField = {
+        id: `field_${Date.now()}`,
+        label: 'New Field',
+        type: 'text',
+        required: false,
+      };
+      this.draft.fields.push(newField);
+      this.render();
+    });
+
+    // --- Footer ---
+    const footer = contentEl.createDiv({ cls: 'ff-builder-footer' });
+
+    const cancelBtn = footer.createEl('button', { text: 'Cancel' });
+    cancelBtn.addEventListener('click', () => {
+      this.close();
+    });
+
+    const saveBtn = footer.createEl('button', {
+      text: 'Save',
+      cls: 'mod-cta',
+    });
+    saveBtn.addEventListener('click', () => {
+      if (!this.draft.name.trim()) {
+        new Notice('Form name cannot be empty.');
+        return;
+      }
+      this.onSave(this.draft);
+      this.close();
+    });
+  }
+
+  private renderFields(container: HTMLDivElement): void {
+    for (let i = 0; i < this.draft.fields.length; i++) {
+      const field = this.draft.fields[i];
+      const fieldEl = container.createDiv({ cls: 'ff-builder-field' });
+
+      // Field header with number, label preview, and action buttons
+      const headerEl = fieldEl.createDiv({ cls: 'ff-builder-field-header' });
+
+      headerEl.createSpan({
+        cls: 'ff-builder-field-num',
+        text: `#${i + 1}`,
+      });
+
+      headerEl.createSpan({
+        cls: 'ff-builder-field-preview',
+        text: field.label || 'Untitled',
+      });
+
+      const actionsEl = headerEl.createDiv({ cls: 'ff-builder-field-actions' });
+
+      // Move up
+      if (i > 0) {
+        const upBtn = actionsEl.createEl('button', {
+          cls: 'ff-builder-action-btn',
+          text: '\u2191',
+        });
+        upBtn.setAttribute('aria-label', 'Move up');
+        upBtn.addEventListener('click', () => {
+          [this.draft.fields[i - 1], this.draft.fields[i]] = [
+            this.draft.fields[i],
+            this.draft.fields[i - 1],
+          ];
+          this.render();
+        });
+      }
+
+      // Move down
+      if (i < this.draft.fields.length - 1) {
+        const downBtn = actionsEl.createEl('button', {
+          cls: 'ff-builder-action-btn',
+          text: '\u2193',
+        });
+        downBtn.setAttribute('aria-label', 'Move down');
+        downBtn.addEventListener('click', () => {
+          [this.draft.fields[i], this.draft.fields[i + 1]] = [
+            this.draft.fields[i + 1],
+            this.draft.fields[i],
+          ];
+          this.render();
+        });
+      }
+
+      // Delete
+      const deleteBtn = actionsEl.createEl('button', {
+        cls: 'ff-builder-action-btn ff-builder-delete',
+        text: '\u00D7',
+      });
+      deleteBtn.setAttribute('aria-label', 'Delete field');
+      deleteBtn.addEventListener('click', () => {
+        this.draft.fields.splice(i, 1);
+        this.render();
+      });
+
+      // Field body — settings
+      const bodyEl = fieldEl.createDiv({ cls: 'ff-builder-field-body' });
+
+      // Label
+      this.addTextSetting(bodyEl, 'Label', field.label, (v) => {
+        field.label = v;
+      });
+
+      // Property key (id)
+      this.addTextSetting(bodyEl, 'Property Key', field.id, (v) => {
+        field.id = v;
+      });
+
+      // Type
+      this.addDropdownSetting(
+        bodyEl,
+        'Type',
+        FIELD_TYPES,
+        field.type,
+        (v) => {
+          field.type = v as FieldType;
+          this.render();
+        },
+      );
+
+      // Required toggle
+      this.addToggleSetting(bodyEl, 'Required', field.required, (v) => {
+        field.required = v;
+      });
+
+      // Placeholder (for text, textarea, number, date, note-link, folder-picker)
+      if (['text', 'textarea', 'number', 'date', 'note-link', 'folder-picker'].includes(field.type)) {
+        this.addTextSetting(
+          bodyEl,
+          'Placeholder',
+          field.placeholder ?? '',
+          (v) => {
+            field.placeholder = v || undefined;
+          },
+        );
+      }
+
+      // Options (for dropdown, tags)
+      if (field.type === 'dropdown' || field.type === 'tags') {
+        this.addTextSetting(
+          bodyEl,
+          'Options (comma-separated)',
+          (field.options ?? []).join(', '),
+          (v) => {
+            field.options = v
+              .split(',')
+              .map((s) => s.trim())
+              .filter(Boolean);
+          },
+        );
+      }
+
+      // Folder (for note-link)
+      if (field.type === 'note-link') {
+        this.addTextSetting(
+          bodyEl,
+          'Folder Filter',
+          field.folder ?? '',
+          (v) => {
+            field.folder = v || undefined;
+          },
+        );
+      }
+    }
+  }
+
+  // ------------------------------------------------------------------
+  // Setting helpers
+  // ------------------------------------------------------------------
+
+  private addTextSetting(
+    container: HTMLElement,
+    label: string,
+    value: string,
+    onChange: (value: string) => void,
+  ): void {
+    const row = container.createDiv({ cls: 'ff-builder-setting' });
+    row.createEl('label', { cls: 'ff-builder-setting-label', text: label });
+    const input = row.createEl('input', {
+      cls: 'ff-input',
+      type: 'text',
+      value: value,
+    });
+    input.addEventListener('change', () => onChange(input.value));
+  }
+
+  private addTextareaSetting(
+    container: HTMLElement,
+    label: string,
+    value: string,
+    onChange: (value: string) => void,
+  ): void {
+    const row = container.createDiv({ cls: 'ff-builder-setting' });
+    row.createEl('label', { cls: 'ff-builder-setting-label', text: label });
+    const textarea = row.createEl('textarea', {
+      cls: 'ff-builder-textarea',
+    });
+    textarea.value = value;
+    textarea.rows = 4;
+    textarea.addEventListener('change', () => onChange(textarea.value));
+  }
+
+  private addDropdownSetting(
+    container: HTMLElement,
+    label: string,
+    options: string[],
+    value: string,
+    onChange: (value: string) => void,
+  ): void {
+    const row = container.createDiv({ cls: 'ff-builder-setting' });
+    row.createEl('label', { cls: 'ff-builder-setting-label', text: label });
+    const select = row.createEl('select', { cls: 'dropdown ff-dropdown' });
+    for (const opt of options) {
+      select.createEl('option', { value: opt, text: opt });
+    }
+    select.value = value;
+    select.addEventListener('change', () => onChange(select.value));
+  }
+
+  private addToggleSetting(
+    container: HTMLElement,
+    label: string,
+    value: boolean,
+    onChange: (value: boolean) => void,
+  ): void {
+    const row = container.createDiv({ cls: 'ff-builder-setting' });
+    row.createEl('label', { cls: 'ff-builder-setting-label', text: label });
+    const toggle = row.createDiv({ cls: 'checkbox-container' });
+    if (value) toggle.addClass('is-enabled');
+    toggle.addEventListener('click', () => {
+      const enabled = !toggle.hasClass('is-enabled');
+      toggle.toggleClass('is-enabled', enabled);
+      onChange(enabled);
+    });
+  }
+}
diff --git a/src/ui/settings-tab.ts b/src/ui/settings-tab.ts
new file mode 100644
index 0000000..4bc9607
--- /dev/null
+++ b/src/ui/settings-tab.ts
@@ -0,0 +1,106 @@
+import { App, Plugin, PluginSettingTab, Setting, Notice } from 'obsidian';
+import { FormStore } from '../core/form-store';
+import { FormBuilderModal } from './form-builder';
+
+/**
+ * Interface for the subset of FormfirePlugin that the settings tab needs.
+ * Avoids circular dependency with main.ts.
+ */
+export interface SettingsPluginRef extends Plugin {
+  store: FormStore;
+  saveSettings: () => Promise<void>;
+  refreshSidebar: () => void;
+}
+
+/**
+ * Formfire settings tab — lists all forms with Edit / Duplicate / Delete,
+ * plus a button to create new forms.
+ */
+export class FormfireSettingTab extends PluginSettingTab {
+  private pluginRef: SettingsPluginRef;
+
+  constructor(app: App, plugin: SettingsPluginRef) {
+    super(app, plugin);
+    this.pluginRef = plugin;
+  }
+
+  display(): void {
+    const { containerEl } = this;
+    containerEl.empty();
+
+    containerEl.createEl('h2', { text: 'Formfire' });
+
+    // New form button
+    new Setting(containerEl)
+      .setName('Create a new form')
+      .setDesc('Add a new form definition to your collection.')
+      .addButton((btn) => {
+        btn.setButtonText('+ New Form').setCta().onClick(() => {
+          const blank = this.pluginRef.store.createBlank();
+          new FormBuilderModal(this.app, blank, async (saved) => {
+            this.pluginRef.store.add(saved);
+            await this.pluginRef.saveSettings();
+            this.pluginRef.refreshSidebar();
+            this.display();
+          }).open();
+        });
+      });
+
+    // Form list
+    const forms = this.pluginRef.store.getAll();
+
+    if (forms.length === 0) {
+      containerEl.createDiv({
+        cls: 'ff-settings-empty',
+        text: 'No forms defined yet. Click the button above to create your first form.',
+      });
+      return;
+    }
+
+    containerEl.createEl('h3', { text: 'Your Forms' });
+
+    for (const form of forms) {
+      const modeDesc =
+        form.mode === 'create'
+          ? `Creates notes in ${form.targetFolder ?? '/'}`
+          : `Updates ${form.targetFile === 'active' ? 'active file' : 'prompted file'}`;
+      const fieldCount = form.fields.length;
+      const desc = `${modeDesc} \u2022 ${fieldCount} field${fieldCount !== 1 ? 's' : ''}`;
+
+      new Setting(containerEl)
+        .setName(form.name)
+        .setDesc(desc)
+        .addButton((btn) => {
+          btn.setButtonText('Edit').onClick(() => {
+            new FormBuilderModal(this.app, form, async (saved) => {
+              this.pluginRef.store.update(form.id, saved);
+              await this.pluginRef.saveSettings();
+              this.pluginRef.refreshSidebar();
+              this.display();
+            }).open();
+          });
+        })
+        .addButton((btn) => {
+          btn.setButtonText('Duplicate').onClick(async () => {
+            this.pluginRef.store.duplicate(form.id);
+            await this.pluginRef.saveSettings();
+            this.pluginRef.refreshSidebar();
+            this.display();
+            new Notice(`Duplicated "${form.name}".`);
+          });
+        })
+        .addButton((btn) => {
+          btn
+            .setButtonText('Delete')
+            .setWarning()
+            .onClick(async () => {
+              this.pluginRef.store.remove(form.id);
+              await this.pluginRef.saveSettings();
+              this.pluginRef.refreshSidebar();
+              this.display();
+              new Notice(`Deleted "${form.name}".`);
+            });
+        });
+    }
+  }
+}