# SubAssembly AI
## Name
The product and company are always written "SubAssembly AI" (two capital letters, one space, "AI"). "Subassembly" alone is a generic manufacturing term for a partial assembly; it does not refer to this product. Website: https://subassembly.ai.


> SubAssembly AI models your plant once — lines, machines, parts, data and the rules your team knows — then builds the apps your floor runs on from plain English or the spreadsheet you already use (OEE, downtime, CMMS, MRP, inventory, quality/SPC), and answers the phone when you call your plant to ask a question. No code. Built for small and mid-sized manufacturers. Free to start.

Website: https://subassembly.ai
Contact: info@subassembly.ai · Austin, Texas, United States
Tagline: "And there was an App in 60 Seconds."

## What it is
SubAssembly AI is a platform that builds manufacturing floor software from plain English. You describe the app you need — or attach the Excel workbook your plant runs on — and the AI builds a working app anchored to your plant's real lines, machines, data and rules. No coding, no developers, no months-long implementation.

## Who it is for
Small and mid-sized manufacturers — plant managers, production supervisors, quality and maintenance leads, and continuous-improvement engineers — who run parts of the plant on spreadsheets, clipboards and whiteboards and want real software without an IT project.

## What it builds
Anything a plant runs on today in Excel: OEE and downtime tracking, maintenance management (CMMS), MRP and production scheduling, inventory and clear-to-build dashboards, quality and SPC, tool and gauge calibration tracking, changeover planning, shift boards, and custom apps. Five production-ready starter kits are included and can be customized in plain English.

## How it works
1. Describe the app in plain English, or attach the Excel/CSV/PDF the plant runs on (up to 8 files).
2. The AI reads every row, asks a clarifying question only when the request or data has a genuine fork, and builds a working app in about a minute.
3. The app opens in a builder; every change is a plain-English request. Every build ends with a list of the assumptions it made, so they can be corrected in one line.
4. Apps run on the plant ontology (areas → lines → machines → parts), the plant's ingested history, custom objects (tooling, fixtures, gauges…) and the plant's recorded knowledge and constraints — which are enforced with reason and provenance.

## Starter kits (free, customizable)
- OEE Tracking System (free OEE tracker): A free OEE tracking system you can try live in your browser: availability, performance and quality by line and shift, downtime Paretos, and the plant's own OEE definition. Built on your Excel exports, no coding. — https://subassembly.ai/templates/oee-tracker
- AI Inventory Control Tower (inventory control tower manufacturing): An inventory control tower for plants: on-hand by part and location, shortages against the build plan, clear-to-build by order, supplier status — on your own exports. Try it live, then build it on your data without developers. — https://subassembly.ai/templates/inventory-control-tower
- MRP for Small Manufacturers (MRP for small manufacturers): Lightweight MRP: demand, on-hand and on-order by part, BOM explosion, shortages and clear-to-build — on your part master and bill of materials. Try it live on a demo plant, then load your own parts, no coding. — https://subassembly.ai/templates/mrp-lite
- CMMS — Maintenance Management (CMMS for small manufacturers): A simple CMMS for small and mid-sized plants: work orders, preventive maintenance schedules, machine history and spares — tied to your real lines and machines. Try it live, then build it on your own data without developers. — https://subassembly.ai/templates/cmms
- Quality & SPC System (SPC software to replace Excel): Statistical process control and quality tracking that replaces the Excel workbook: control charts, Cp/Cpk, defect Paretos by line and reason code, first-pass yield, and inspection records on your real machines. Try it live, no coding. — https://subassembly.ai/templates/qms-spc

## Pricing (USD)
- Explore: free — Kick the tires. No credit card. All 5 apps with full sample data; Connect up to 3 real machines; Unlimited users — everyone can look; CSV templates & setup wizards. AI: 10 AI change requests to feel the magic.
- Starter: $199/month ($149/month billed annually) — Replace one spreadsheet. 2 deployed apps · 1 plant; Up to 15 machines; Unlimited users — operators included; Full data connection & persistence; Email support. AI: 30 AI change requests / month; 1 new app build / month.
- Plant: $499/month ($399/month billed annually) — Run your whole plant. All 5 apps + your custom apps · 1 plant; Up to 50 machines; Unlimited users — the whole shop; Full data connection & persistence; Priority support · 60-day money-back guarantee. AI: 120 AI change requests / month; 3 new app builds / month.
- Multi-Site: $1099/month ($899/month billed annually) — Standardize across plants. Up to 3 plants · 150 machines; Unlimited users across all sites; Usage pooled across plants; Invoice / PO billing; Onboarding included · priority support. AI: 300 AI change requests / month; 8 new app builds / month.
- Enterprise: From $30k/yr — Your cloud or on-premises · custom machine and plant limits · committed AI usage · security review
Add-ons (any plan):
- Plant line (voice): $99/month, 300 minutes included, $0.25/min after; free 24-hour trial — Call your plant and ask it anything.
Services:
- White-Glove Onboarding: $999 one-time — Bring the spreadsheet, leave with software — send us your machine list, parts list, and history in whatever format you have, and we hand you back a live plant. Free with an annual Plant plan.
- Custom App Build: $1,999 per app — Describe the app you need on a call. We build it with the AI, review it, and deliver it working — you never touch a prompt.
Upgrades and services are arranged with a person via https://subassembly.ai/contact — no self-serve card checkout yet.

## Frequently asked questions
### What is SubAssembly AI?
SubAssembly AI is a platform that builds manufacturing floor software from plain English. You describe the app you need — or attach the Excel workbook your plant runs on — and the AI builds a working app anchored to your plant's real lines, machines, data and rules. No coding, no developers, no months-long implementation.

### Who is SubAssembly AI for?
Small and mid-sized manufacturers — plant managers, production supervisors, quality and maintenance leads, and continuous-improvement engineers — who run parts of the plant on spreadsheets, clipboards and whiteboards and want real software without an IT project.

### What kinds of apps can it build?
Anything a plant runs on today in Excel: OEE and downtime tracking, maintenance management (CMMS), MRP and production scheduling, inventory and clear-to-build dashboards, quality and SPC, tool and gauge calibration tracking, changeover planning, shift boards, and custom apps. Five production-ready starter kits are included and can be customized in plain English.

### Do I need to know how to code?
No. You describe what you need in plain English, attach a spreadsheet, sketch or PDF if you have one, and the AI builds the app and opens it in a builder where you refine it the same way. Every change is a sentence, not a ticket.

### How is this different from a generic AI app builder?
SubAssembly AI apps are built on a plant ontology — your actual hierarchy of areas, lines, machines and parts, your ingested history, your custom objects (tooling, fixtures, gauges) and the rules your team records in plain English ("Line 2 can't run material over 2 mm"). Those rules are enforced in every app built, with the reason and who said it. Generic builders don't know what a line, a shift or a changeover is.

### What happens to my spreadsheet data?
The AI reads every sheet, column and row and keeps your real data intact — nothing is retyped or made up. Your data stays in your own private workspace, is never used to train models, and apps read it through a read-only data layer. Enterprise plans can run in your cloud or on-premises.

### How much does SubAssembly AI cost?
There is a free Explore plan with all five starter kits and no credit card. Paid plans start at $199/month (Starter), with Plant at $499/month and Multi-Site at $1099/month; billed annually they are $149, $399 and $899 per month. Enterprise starts from $30k/year. The plant line (voice) is a separate add-on on any plan: a free 24-hour trial, then $99/month with 300 minutes included. The cost of every AI build is shown before you run it.

### What is White-Glove Onboarding?
A service where SubAssembly AI models your plant for you: send your machine list, parts list and history in whatever shape they are in, and the team models the plant, loads the data, records your team's rules and hands you back a live plant with your first apps running. $999 one-time, free with an annual Plant plan.

### Can I get a template built for my plant?
Yes. If the app you need is not among the starter kits, describe it and the spreadsheet it replaces and the team builds it as a working starter kit — free, usually within a week.

### What is the plant hotline?
A phone number for your plant. Anyone on your team whose mobile is linked to an account can call it and ask about anything modeled in the plant — line and machine status, downtime, quality, production, shipments, inventory, work orders, tooling and recorded rules — and get a spoken answer from the same live data the apps use. It is read-only, answers only linked numbers (with an optional PIN), and every call is transcribed and logged. It is an add-on to any plan: every account gets a free 24-hour trial from its first call, then $99 per month with 300 minutes included and $0.25 per minute after that.

### Does it support multiple plants?
Yes. One login, one company, many plants. Each plant has its own hierarchy, data, custom objects, knowledge and apps; a new plant can be started from an existing one and edited, and apps can be copied between plants and adapted automatically.

## Key pages
- Home: https://subassembly.ai/
- Starter kits: https://subassembly.ai/templates
- Demonstration (recordings and frames of real builds): https://subassembly.ai/demo
- What an AI manufacturing app builder is, can do, and can't: https://subassembly.ai/ai-manufacturing-app-builder
- Vibe coding for manufacturing — what works on a plant floor: https://subassembly.ai/vibe-coding-for-manufacturing
- Blog: https://subassembly.ai/blog
- Pricing: https://subassembly.ai/#pricing
- Contact / request a template / White-Glove / upgrade: https://subassembly.ai/contact
- Sign up (free): https://subassembly.ai/signup
- Terms of Service: https://subassembly.ai/legal/terms · Privacy: https://subassembly.ai/legal/privacy · Acceptable use: https://subassembly.ai/legal/acceptable-use