Features

Built for the bench,
not the boardroom.

Every feature in StringsTheory was designed around how real repair shops, luthiers, and small manufacturers actually work — from intake to invoice. Native macOS + iPad app with web companion.

📊
Dashboard
Your shop's pulse at a glance.
✓Summary cards: Total Items, Inventory Value, Low Stock Alerts, Active Work Orders
✓Recent work orders with live status badges
✓Reorder alerts — items below threshold
✓Active production orders
✓Global cross-entity search: inventory, work orders, customers, BOM, production orders
StringsTheory Dashboard on Mac StringsTheory Dashboard on iPad
📦
Inventory Management
Complete control over every item on your shelves.
✓Full item management: name, SKU (auto or custom patterns), internal SKU, barcode, photos
✓Category / Subcategory / Item Type taxonomy with inline creation
✓16+ units of measure: each, box, bag, case, roll, spool, pack, pair, set, feet, meters, lbs, kg, oz, custom
✓Units per package with automatic cost-per-piece calculation
✓Unit Cost, Sale Price, reorder point, and reorder quantity with visual low-stock alerts
✓Location tracking and total inventory value calculated in real-time
✓Backorder detection
✓Item photos with camera capture or gallery import
✓Barcode scanning (Code128, QR, UPC) to find or create items
✓Wholesale item linking — wholesale to retail with auto stock deduction
✓Component and wholesale item linking
✓Bulk add items with shared properties
✓Bulk edit — update category, type, location, reorder point, sale price, or sync flags across multiple items
✓Built-in barcode scanner (camera on iPad, USB scanner on Mac)
StringsTheory inventory management on Mac StringsTheory inventory management on iPad
🔧
Work Orders
From drop-off to pick-up, fully tracked.
✓Three view modes: Kanban board, compact list, detailed list
✓Status workflow: Pending → In Progress → Completed / Cancelled
✓Rich fields: title, description, BOM link, quantity, customer, due date, notes, terms & conditions
✓Work order templates — pre-configure title, description, checklists, fields, and tags
✓Apply templates with one tap to speed up intake
✓Customizable checklists with progress tracking per order
✓Custom fields (text, number, dropdown)
✓Custom color-coded progress tags
✓Signature capture (touch on iPad, mouse/trackpad on Mac)
✓PDF generation with business branding
✓Email work orders directly to customers with customizable templates
✓Tag system for categorization and filtering
✓Search and filter by status, customer, title, or tags
StringsTheory work orders on Mac StringsTheory work orders on iPad
👥
Customers
Keep every client relationship organized.
✓Full customer records: name, email, phone, company, address
✓Search by any field
✓Linked to work orders and production orders
✓Multi-select for bulk actions
✓CSV import/export
✓Inline customer creation from work order or production order forms
StringsTheory customers on Mac StringsTheory customers on iPad
🏭
BOM (Bill of Materials)
Know exactly what goes into every build.
✓Create assemblies with output item, output quantity, and component items
✓Automatic cost estimation based on component unit costs
✓Component count and quantity tracking
✓Search BOMs by name, description, or output item
✓Card or list view modes
✓Favorite BOMs for quick access
StringsTheory BOM on Mac StringsTheory BOM on iPad
🔢
Serialized Items & Production Tracking
Serial-level visibility across everything you build.
✓Production orders with auto-incrementing PO numbers
✓Stock orders and customer orders
✓Line items linked to inventory with quantities
✓Due date management with overdue highlighting
✓Custom progress tags with color coding
✓Serialized unit tracking — serial number, status, manufactured date, revision, color
✓Unit statuses: Available, Reserved, Consigned, Sold, In Repair, Defective
✓Dealer and customer assignment per unit
✓Custom production fields (text, number, date) — define once, track per unit
✓CSV import/export of serialized units with flexible column matching
✓Customer resolution during import — auto-match by name or pick from dropdown
StringsTheory production on Mac StringsTheory production on iPad
💰
COGS (Cost of Goods Sold) Reports
Real numbers, real margins.
✓Track purchases, sales, work order usage, and adjustments
✓Date range filtering (7D, 30D, 90D, 1Y, All)
✓Revenue, COGS, gross profit, and gross margin calculations
✓Breakdown by item, type, day, or month
✓Bar chart visualization — cost vs. revenue per item
✓Sortable columns for detailed analysis
✓Exportable transaction data
StringsTheory COGS report on Mac StringsTheory COGS report on iPad
🏷
Label Design & Printing
Design, preview, and print labels your way — from a single barcode to a full batch run.
✓Visual drag-and-drop label designer
✓Built-in Dymo templates: 30252, 30336, 30332, 30346, 30334, 30258, 30256, 30333 + custom sizes
✓Design elements: Text, Barcode (Code128/UPC-A/EAN-13), QR Code, Images, Lines, Rectangles
✓20+ dynamic field placeholders: item name, SKU, serial number, sale price, customer, dates, and more
✓Import .dymo files from Dymo Label software
✓Production labels — auto-queue labels for every new serialized unit
✓Dual-label support for front/back printing
✓Label image library
✓Print preview with live rendering
✓Print to system printer or PDF
✓Dedicated print queue with entries grouped by printer
✓Pending/printed/skipped status management
✓Bulk "Print All" per printer
✓Network print server support with Bonjour (mDNS) discovery
✓Printer role assignment: production, shipping, returns, inventory
✓Label size validation per printer brand (Dymo, Brother, Zebra, Rollo)
✓Batch job submission to network printers
📋
Bulk Operations & CSV Import/Export
Move data in and out fast — with validation every step of the way.
✓Multi-item selection (Cmd/Shift+Click on macOS, tap on iPad)
✓Bulk edit: category, location, reorder point, integration sync toggles
✓Bulk add items with shared properties
✓Bulk delete with confirmation dialogs
✓Bulk status changes for work orders and production units
✓CSV template generation for any data type
✓Flexible import with validation preview and column mapping
✓Round-trip compatible: export → edit in Excel → re-import
✓Inventory CSV with all item fields
✓Production CSV with SKU, serial number, status, color, dates, dealer, customer, revision, custom fields
✓Customer CSV import/export
✓Work order CSV import via templates
✓Auto-create categories and item types from imported data
✓Customer resolution UI for production imports: auto-match, pick from list, or keep as text
🔗
Integrations
Connect your tools, automate the grunt work.
✓Square POS: OAuth with PKCE security, two-way inventory sync
✓Square POS: Location-specific sync, catalog matching by SKU, variation support
✓Square POS: Field sync options (name, description, price, quantity), exclusion list
✓Shopify: OAuth with HMAC validation, product and variant synchronization
✓Shopify: Fulfillment location selection, two-way inventory quantities
✓Google Sheets: Push inventory and serial data to designated spreadsheets
✓Google Sheets: Per-item worksheets with serial unit details and custom production fields
✓Google Sheets: Import preview before applying changes
✓Configurable auto-sync intervals per integration (5, 15, 30, 60 min)
✓Per-item exclusion lists and field sync options
☁️
Cloud Sync & Multi-Device
Work anywhere — online or off. Your data follows you.
✓Bi-directional cloud sync across Mac and iPad Annual
✓Entity-level selective sync — choose what syncs
✓Configurable auto-sync frequency (5, 15, 30, 60 minutes)
✓Conflict resolution — visual diff viewer for manual resolution
✓Sync preview before applying
✓Automatic retry with exponential backoff
✓Full sync log with device and integration filtering
✓Push/Pull controls per integration (Square, Shopify, Sheets, Cloud)
✓Web app companion at app.stringstheoryinv.com
🤝
Team & Multi-User
Bring your whole team on board with role-based access. Annual
✓Email/password and Google OAuth login
✓4 roles: Admin, Manager, User, Viewer
✓Invite system with token-based links
✓User management: create, activate/deactivate, change roles, delete
✓Forgot password and change password flows
✓Server-pushed announcement banners
💾
Backup & Restore
Your data, protected and portable.
✓Selective backup by data type
✓Local file export
✓Full system restore or selective type restore
✓One-tap restore from app documents
✓Factory reset with confirmation
✓Legacy backup format support
📧
Email System
Keep customers in the loop automatically.
✓Customizable email templates with 19 merge fields
✓Merge fields: work order details, customer info, business info
✓Auto-triggers on work order creation and status changes
✓Delivery via Resend (cloud) or local mail client (mailto)
✓PDF attachment support
✓Test email functionality
✓Per-function enable/disable toggles
⚙️
Settings & Configuration
Configure everything to match how your shop works.
✓Category / Subcategory / Item Type taxonomy management
✓Label templates and label designer
✓Work order templates with checklists and custom fields
✓Progress tag management with color picker
✓Production field management with drag-and-drop reorder
✓Printer assignments to label templates
✓Print server configuration
✓Business profile: name, DBA, address, phone, email, website, logo, currency
✓Category, subcategory, and item type management
✓Custom component fields
✓Progress tag management with color coding
✓Language selection (English, Spanish, French, German, Japanese, Italian)
✓Light/dark theme with system default option
✓Compact vs. comfortable view mode (Mac)
StringsTheory settings on Mac StringsTheory settings on iPad
🔒
Security
Your data stays yours. No trackers, no telemetry.
✓License-based access control with read-only mode for unlicensed features
✓Keychain storage for all credentials and tokens
✓PKCE OAuth for third-party integrations
✓AES-GCM encryption for token storage
✓Atomic file writes for backup and keychain operations
✓No advertising trackers, behavioral analytics, or third-party SDKs
🖥
Platform Support & Internationalization
Native apps, six languages, and automatic updates.
✓macOS: Native table views, keyboard shortcuts, menu bar integration, Sparkle auto-updates
✓macOS: USB barcode scanner support, system printer discovery
✓iPad: Touch-optimized interface, camera barcode scanning, adaptive layouts, 44pt touch targets
✓Web: Companion web app accessible from any browser
✓6 languages: English, Spanish, French, German, Japanese, Italian
✓Light/dark theme with system default option
✓Compact vs. comfortable view mode (Mac)

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