Simple prices. Nothing per tag, ever.
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 the app is free, the device is one price with everything in it — and nothing we make will ever charge you per tag, per seat or per month.
Mobile app
A pocket HMI for iPhone and iPad — 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
- One network scan finds every PLC on the subnet
- Dashboards, operator panel, alarms — free
- Patent-pending "Find by action" tag discovery
- Writing values is a small one-time unlock — free during the beta, never a subscription
LineKeeper device
A 7″ plug-in industrial touchscreen that stands in for the dead panel — then stays as the machine's logger, dashboard and analyst.
- Backup HMI: live tags, drag-and-drop operator panel, guarded writes
- Data logging — raw 30 days, hourly 1 year, daily 5 years, on the device
- Dashboards, boolean analytics, on-device AI health reports
- MQTT Sparkplug B out + Tailscale remote access, both optional
- One-tap updates with automatic rollback
- 30-day money-back guarantee · PO / NET-30 accepted
LineKeeper Hub
A plant-wide SCADA-lite that picks up every LineKeeper on the network automatically — history, dashboards and alarms for the whole floor.
- Auto-discovers LineKeeper devices — assembles itself in minutes
- One place for every machine's history and health
- Will follow the same pricing rules: one-time, nothing per tag
- Price honestly not set yet — we'd rather build it first
Also free for everyone — no plan needed: the in-browser HMI project converter. Upload the dead panel's FactoryTalk / TIA Portal / Weintek export and get a working LineKeeper screen; the file never leaves your computer.
What you will never pay us for
- Per tag, per data point, per "monitored asset"
- Per seat, per user, per client screen
- Monthly subscriptions for core features
- Software updates or version upgrades
- Cloud storage — there is no cloud, your data stays in the plant
- Getting help to make it work
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.
— Alex, founder
Fair questions about money
Is the app really free?
Yes. Downloading the app, browsing every tag, building dashboards and panels, the network scan, alarms and Find by action are free. The only paid thing is writing values to the controller — a small one-time unlock, no subscription. During the beta even writes are free.
What exactly does $1,290 include?
Everything: the hardware, all software features, one-tap updates with automatic rollback, and a 30-day money-back guarantee. It's the founders' batch price (regular $1,490), one-time. There are no tiers, add-ons or per-tag fees waiting behind it.
Can our plant pay by invoice or PO?
Yes — card or company invoice, purchase orders and NET-30 accepted. Joining the early list costs nothing and takes no payment details; payment opens when the first batch ships, and early-list members keep the locked founders' price.
How much will the Hub cost?
Honestly: not set yet — it's in development. What is set are the rules it will follow, same as everything we make: one-time price, nothing per tag or per data point, no per-seat licenses, no mandatory subscriptions.