Now in v1.8.85 — Built for Shops & Makers

Your shop,
finally in sync.

Inventory, work orders, production tracking, and POS integrations — purpose-built for repair shops, retailers, and makers of goods.

Download for Mac
See Pricing

Mac · iPad · iPhone · 14-day free trial on Monthly · Cancel anytime

StringsTheory Dashboard on Mac StringsTheory Dashboard on iPad
Inventory Management
Work Orders
Kanban Board
Barcode Scanning
Square POS™ Sync
Shopify™ Integration
Bill of Materials
COGS Reports
Production Tracking
Label Designer
Network Printing
Cloud Sync
Multi-User Roles
CSV Import & Export
6 Languages
AI Receipt Import
Workshop Calendar
⌘K Global Search
Lot Expiration
Cycle Counts
iPad Support

Everything your shop needs, nothing it doesn't.

StringsTheory is designed around the real workflow of a repair shop, retailer, or goods producer — from intake to invoice.

Smart Inventory

Auto-SKU generation, barcode scanning (camera on iPad, USB on Mac), low-stock alerts, bulk edit, wholesale linking, 16+ units of measure, and real-time inventory value. Switch on Detailed Mode for technical inventories — spec fields and substitution rules for capacitors, resistors, tubes, and more.

Work Orders

Eight-status repair workflow (Pending Triage → Pending → Awaiting Parts → In Progress → QC → Ready for Pickup → Completed → Cancelled) with Dashboard callouts, Kanban board and list views, templates with checklists, signature capture, PDF generation, and email notifications.

Customer Intake Kiosk

Turn a shared iPad into a self-service drop-off station. Simple Mode walks walk-ins through You → What's going on? → Details → Sign. One-tap "Hand to Customer" button, PIN exit gate, and auto-print of repair labels on submit.

Production Tracking

Serial number tracking with per-unit statuses, custom fields, production orders, batch management, duplicate detection, and CSV import/export.

Label Design & Printing

Visual drag-and-drop designer, 7 built-in repair label designs (Hangtag, Case Sticker, Customer Receipt, Parts Bag, Status, QC, Pickup), Dymo templates with .dymo import, multi-up sheet rendering for letter/A4 printers, and a dedicated print queue.

BOM (Bill of Materials)

Build assemblies from components with UOM-aware cost calculation. Link BOM to work orders with cost reports on printed documents.

COGS (Cost of Goods Sold) Reports

Revenue, COGS, gross profit, and margin with visual charts. Group by item, category, day, or month. Full transaction ledger with filtering.

Cloud Sync & Multi-Device

Offline-first with automatic sync. Conflict resolution UI, selective sync, pull preview, and a sync log with multi-integration filtering.

Team Management

Bring your whole team on board with seat-based access. Five roles — Owner, Admin, Tech, User, Viewer — magic-link email invites (no shared passwords), Google OAuth, deactivation, and server-pushed announcements.

Detailed Inventory Mode & Substitutes

For shops that need it: per-category spec fields (capacitance, resistance, tolerance, voltage, tube type, …), cross-part substitution rules, and BOMs that automatically use a declared substitute when the primary part is short.

AI-assisted Receipt Import

Drop in any supplier invoice — Mouser, CE Distribution, D'Addario, Tayda, Tube Depot, StewMac, Newark, or an unknown vendor — and Apple Foundation Models extract the line items on-device, match them to your inventory, and queue them for one-tap review. Your invoices never leave your Mac.

6 Languages & CSV

English, Spanish, French, Italian, German, and Japanese. Plus full CSV import/export for inventory, production, customers, and work orders.

Upgrades straight from the bench.

Workshop-grade additions that came out of real bench problems — not feature-bingo. Everything below is live in the current release.

Work Order Form Builder + Intake Kiosk

Design your own intake forms from 13 question types — photos, signatures, terms & conditions, conditional follow-ups — then hand the iPad to the customer. They fill it out, sign, and the work order writes itself.

Receipt & Order-Import Scanner

Scan a supplier invoice PDF — DigiKey, Mouser, Newark, Tayda, and more — straight into matched inventory and real FIFO cost lots. It learns each supplier's SKU mapping and flags invoices whose math doesn't add up.

Serialized Production That Moves Real Inventory

Completing a build consumes its BOM through FIFO at true per-unit cost and posts the finished units as new cost lots. COGS reflects what the build actually cost — not a guess.

Service Hub

RMAs, Loaners, and Warranties in one view. Walk-in RMAs, scannable service tags, and pickup sign-off with a second signature — nothing leaves the shop without a paper trail.

Print Server Console + LAN Labels

Manage label printing from inside the app — printer profiles, spool assignment, test prints, and secure PIN pairing. Print a barcode label for any item, straight over the LAN.

Shortage Board + Bench Capacity Calendar

See what's blocking work and what to buy — grouped by supplier with one-tap PO drafting — plus a capacity calendar that lays out workload by technician and station.

Full iPhone Support

Dashboard, reports, forms, and lists redesigned for compact screens. The whole shop in your pocket — not a shrunken iPad layout.

Encrypted Backups + Data Health

AES-256-GCM encrypted backups to Dropbox or iCloud, plus a Data Health scanner that finds and repairs inconsistencies before they become problems on the bench.

From drop-off to pick-up, tracked.

Move repairs through eight real statuses — Pending Triage, Pending, Awaiting Parts, In Progress, QC, Ready for Pickup, Completed, Cancelled — across a visual Kanban board, compact list, or detailed list view. Dashboard callouts surface what needs attention.

StringsTheory work order Kanban board on Mac StringsTheory work order Kanban board on iPad
StringsTheory inventory management on Mac StringsTheory inventory management on iPad

Every part. Always accounted for.

From a single component to a serialized finished product — StringsTheory tracks it all with 16+ units of measure, real-time value, and backorder detection.

Integrations

Plays well with your stack.

Two-way sync with the tools you already use. Preview before you pull, push only what you need.

Square POS™
Shopify™
Google Sheets™
Dymo™ Label Templates

See all integrations →

Pricing

Simple pricing,
start free for 14 days.

Monthly covers all the core tools. Annual adds the features growing shops depend on. Privacy Edition is a one-time purchase for shops that need to stay offline.

Monthly
$34.99
per month + local tax · 14-day free trial

All core tools to run your shop. No long-term commitment — cancel anytime.

  • Inventory, work orders & customers
  • BOM (Bill of Materials) & production tracking
  • COGS reports & analytics
  • Square, Shopify & Google Sheets™ sync
  • Label printing & designer
  • 20 work order emails / month
  • Automatic updates
Start 14-day free trial

Card required · No charge until day 15 · Cancel anytime

See all plans (incl. Privacy Edition) →Compare features →

Prices in USD. Local taxes may apply at checkout. Monthly plans can be cancelled anytime. No pro-rated refunds on monthly or annual plans.

Get started today

Built for the bench.
Ready for the business.

See why repair shops, retailers, and makers are switching from spreadsheets and sticky notes. Mac, iPad, and iPhone — all features included.

Download for Mac
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Need a fully offline version? Privacy Edition — no cloud, no tracking, buy once.