Free
Pro $59.99 one-time · in-app
Simple prices. Nothing per tag, ever.
Pricing · LK Go free · LK On from $800 once · LK Up free
We've stood in front of enough dead panels to know: when the line is down you need a fix, not a licensing negotiation. So LK Go is free and Pro is one payment, LK On is one price with everything in it, and LK Up is free. Nothing we make will ever charge you per tag or per seat.
LK Go
LK On
$800
7″ · $900 for 10″ · one-time
LK Up
Free
everything · Mac and Windows today
Per tag · per seat
Nothing
in any product, ever
The pricesLK Go · LK Up · LK On
Three products, three plain prices
LK GoPhone HMI for iPhone & iPad
FreePro: $59.99 one-time, in-app
The 15-minute bridge when a panel dies, and the everyday diagnostics tool afterwards.
- Allen-Bradley Logix, Siemens S7 and Modbus TCP
- Zero-config tag browsing on Logix: the controller hands over its own tag list
- Network scan, dashboards, operator panel layout, alarms: free
- Patent-pending "Find by action" tag discovery: free
- Pro adds writes (buttons that really start and stop the machine, every write unlocked per tag and logged) and machine history on real controllers
- Pro is bought once and kept: never a subscription
LK UpMaintenance system (CMMS)
Freeeverything · never per seat
Work orders, PM, parts, requests and reports on a Mac or Windows PC in your plant; technicians work from their phones, offline, and sync later.
- One program on a Mac or a Windows PC; a Linux server is in preparation
- Unlimited people: nothing per seat, nothing held back
- Your data stays on your PC; works without internet
- Set up in about half an hour with the built-in assistant
- No paid plan exists. If one ever appears it will be optional, flat per plant, and what is free today stays free
LK OnBackup touchscreen
$8007″ · $900 for 10″ · one-time
A plug-in industrial touchscreen that stands in for the dead panel, then stays as the machine's logger, dashboard and live ladder view.
- All Pro features built in: no separate unlock
- Operator panel, live tags, dashboards, up to 5 years of history, live ladder
- Allen-Bradley EtherNet/IP · SLC-500/MicroLogix · PowerFlex · Siemens S7 · Modbus TCP/RTU · OPC UA
- Mounting bracket and power supply in the box; software updates included
- Ships within 8 weeks of order · full refund before shipping · 30-day money-back after delivery
Also free for everyone, no plan needed: the in-browser HMI project converter and the L5X ladder viewer. Upload the dead panel's FactoryTalk / TIA Portal / Weintek export and get its buttons, indicators and values back as an LK Go screen; the file never leaves your computer.
Preorder termsLK On
Written where the button is
Prefer an invoice or purchase order? Reserve a unit and we send an invoice — NET-30 for plants. Nothing is charged until you decide.
| Full refund before shipping | Any time before your unit ships: one email, no questions. |
|---|---|
| 30-day money-back after delivery | Send it back within 30 days of delivery, complete and undamaged, at your shipping cost, for a full refund. |
| One-year limited warranty | Defects in materials and workmanship, 12 months from delivery: repair or replace. Not liquid, drops, wrong voltage or an opened enclosure. |
| Ships within 8 weeks of order | If we miss it by more than 2 weeks, we email everyone and offer a refund. Shipping to a US address is included. |
| No subscription | One price, everything included. Software updates included. |
| Not a certified HMI, not a safety device | A temporary bridge while the original panel is repaired or replaced. |
Long form: LK On preorder terms.
The rulesNothing per tag, ever
What you will never pay us for
Industrial software pricing usually punishes you for growing: more tags, more seats, another year, another invoice. We price the thing, not your usage of it — connect one tag or ten thousand, the bill is the same.
- Per tag, per data point, per "monitored asset"
- Per seat, per user, per technician, per client screen
- Monthly subscriptions for core features
- Software updates or version upgrades
- Cloud storage to use your own data: it stays in the plant
- Getting help to make it work
WhyA note from the founder
Why it's priced like this.
LineKeeper started on a plant floor, not in a pricing
workshop. We've stood in front of dead panels ourselves, waited for quotes measured in
weeks, and watched "solutions" arrive with license calculators attached. We came away
convinced of two things: the fix shouldn't be complicated, and the bill shouldn't need
an explanation. If a price here ever stops being simple, that's a bug — tell us.
— Alex, founder
FAQFair questions about money
Fair questions about money
Is LK Go really free?
Yes. Downloading LK Go, browsing every tag, building dashboards and panels, the network scan, alarms and Find by action are free. The only paid thing is Pro, a one-time purchase, no subscription — which unlocks writing values and machine history on real controllers.
What does LK On cost?
7″ $800, 10″ $900 — one-time, everything included: hardware, all software features, software updates with automatic rollback, mounting bracket and power supply. No tiers, add-ons or per-tag fees behind it, no subscription. Preorder now; first-batch units ship within 8 weeks of order, and any preorder is fully refundable until the day it ships; after delivery you have 30 days to send it back for a full refund.
Can our plant pay by invoice or PO?
Yes. Card payment on the site goes through Stripe. For an invoice or purchase order, reserve a unit and mention the PO — we send an invoice, NET-30 for plants.
What if you miss the ship window?
The window — within 8 weeks of order — is written next to the button. If we miss it by more than 2 weeks, we email everyone and offer a full refund. Before shipping, a refund is one email at any time, no questions; after delivery, 30 days to send it back.
What does Pro unlock?
Pro is a one-time $59.99 in-app purchase in LK Go, no subscription. It unlocks writing values — buttons that really start the machine — and machine history on real controllers. Everything else in the app is free.
What will LK Up cost?
LK Up, the maintenance system that runs on your own Mac or Windows PC, is free: everything, for every person in the plant, nothing per seat, and no paid plan exists. If we ever add something paid, it will be optional and flat per plant, and what is free today stays free.