iPhone & iPad · AvailableAndroid · Coming soon
CCTV Calc
Storage, PoE, lens and cabling calculators for security and low-voltage installers.
Learn more →Software studio · Arizona & New Mexico
Field-built tools for the trades.
LJNA 2714 makes small, focused apps for installers, contractors and field crews — built from years of running service, projects and operations on low-voltage jobs. They work offline, need no account, and carry no ads.
Works offline
Built for basements, ceilings and job sites with no signal.
Your data stays yours
Job details live on your device. No accounts, no tracking.
One honest price
No ads, no credits, no upsell pop-ups.
Shown math
Every calculator documents its formulas and sources.
iPhone & iPad · Coming soonAndroid · Coming soon
Cable Ledger
Cable pull sheets and patch-panel port maps for structured cabling jobs.
Learn more →iPhone & iPad · Coming soonAndroid · Coming soon
Radius
Location zone alarms — keep-in and keep-out geofences that work on your device.
Learn more →iPhone & iPad · Coming soon
Paw Pairs
A flip-and-find animal memory game for young kids. No ads, no accounts, no purchases.
Learn more →More tools for field crews are in development.
Built by someone who's run the jobs.
LJNA 2714 is an independent software studio. Its founder spent years in the field — installing, servicing and running projects and operations across access control, security cameras, fire alarm, intercoms, data and telecom, on industrial, data-center and government sites.
Every app starts from a real jobsite problem: the math you do on a ladder, the paperwork after the pull, the question a crew asks twice a day. If you install for a living and something wastes your time, we want to hear about it.
Contact
Support questions, feature ideas, or a tool your crew needs — email us. App support pages are linked from each app.
ljna2714@proton.me