Support

Help with the LineKeeper app

A real person reads every message. Tell us what happened — the app, your controller model, and what you expected — and we will get back to you by email.

Open the contact form →

Get in touch

The fastest way to reach us is the contact form on the homepage. It goes straight to the developer; there is no ticket queue and no bot. Please include:

  • What you were doing and what happened.
  • Your controller family (Allen-Bradley Logix, Siemens S7, Modbus device) and model if you know it.
  • Your iOS or Android version and whether you were on the demo line or a real controller.

Feedback & reviews

The app is live on the App Store — feedback through the contact form reaches the developer directly, and an honest App Store review helps other engineers find the app. On Android the app is in closed beta: join via Google Play and send feedback the same way.

Try it with no hardware — the demo line

The app ships with a built-in demo line: two virtual PLCs with live moving values, a packager that jams and needs a reset, and start/stop/jog buttons that actually work. You can learn the whole app — tag browser, dashboard, operator panel and guarded writes — without any controller connected.

For App Review: to evaluate every feature without Allen-Bradley hardware, open the app and select the Demo line on the equipment screen. It exercises the tag browser, dashboard tiles, the operator panel, hold-to-run jog and the write dialog end to end. No login or account is required.

Common questions

Many setup and safety questions are answered on the app FAQ and in the user guide. A few quick ones:

  • Which PLCs? Allen-Bradley CompactLogix and ControlLogix over EtherNet/IP (zero-config tag browsing; Micro800, SLC-500 and PLC-5 are not supported); Siemens S7-300/400/1200/1500 over S7comm (PUT/GET enabled, non-optimized DBs); and anything speaking Modbus TCP — points are named once, with a live preview.
  • Can't connect? Your phone must be on the same network as the controller (plant Wi-Fi that routes to the PLC, or a USB-C Ethernet adapter). If you can't ping the PLC, the app can't reach it either.
  • Is writing safe? See the safety terms — writing moves real machinery, and you remain responsible for it.

Legal

See our Privacy Policy, Terms of Use, and Data & Account Deletion.