# LoopWatt: Fire Alarm NFPA 72 — Inspection reports & testing > Inspection reports & testing (iPhone/iPad app by Chris Thrasher.) - Source: https://appshunter.io/ios/app/loopwatt-fire-alarm-nfpa-72/id6790129179 (this page in markdown: same URL + `.md`) - Developer: [Chris Thrasher](https://appshunter.io/developer/1790762521) - Category: Utilities, Business - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 17.6 · 2 MB - Languages: American English - Released: 2026-08-01 - Data updated: 2026-08-27 - User reviews in markdown: https://appshunter.io/ios/app/loopwatt-fire-alarm-nfpa-72/id6790129179/reviews.md ## What is LoopWatt? LoopWatt is the offline field toolkit for fire alarm and life safety technicians who inspect, test, and maintain systems under NFPA 72. The inspection report is the product, and everything else supports it. THE INSPECTION FLOW - Build a building's device inventory once. Every future annual inspection starts from last year's list. - Test device by device with big pass, fail, deficiency, and not accessible taps. Auto advance keeps you moving; the benchmark is about 1.76 minutes per device, so every saved tap is billable time. - Add a note or photo when you need one. Running totals stay in view. - One tap produces the NFPA 72 style Record of Inspection and Testing: a clean, authority ready PDF you sign and share from the field. CALCULATORS THAT SHOW THE CODE - Battery and secondary power sizing: 24 hour standby plus the alarm period, with the aging factor and the next standard battery. - Notification appliance circuit voltage drop to the 16 volt floor, lump sum or point to point. - Audibility, visible notification candela, and detector spacing with the half spacing and 0.7 methods. - Every result shows the formula, the worked steps, and the NFPA 72 citation for your selected edition (2016, 2019, 2022, 2025). TROUBLESHOOTING AND REFERENCE - Guided decision trees for ground faults, opens, signaling line circuit trouble, nuisance alarms, notification circuits, battery and power, and communicator failure. - A trouble family reference and a panel brand library covering the major manufacturers. - Chapter 14 inspection and testing frequencies, candela and spacing tables, the device current draw library, NEC Article 760 wiring, and end of line resistor values. FORMS AND DOCUMENTATION - Record of Completion, acceptance and commissioning checklist, detector sensitivity record, deficiency report, service work order, and a job hazard analysis, all to PDF. - Reusable company, crew, and site profiles. Photo and signature capture. Combine a whole site into one packet. NEVER LEAVE A SYSTEM IMPAIRED - The impairment workflow tracks every step: notify the authority having jurisdiction and the monitoring company, place the system on test, post a fire watch, and confirm restoration. Reminders fire until you close it. BUILT FOR THE FIELD - Fully offline. Every reference, calculator, form, and tree ships inside the app. Outgoing email queues until you find signal. - Glove friendly: big tap targets, high contrast, big readable numbers. - 100% private: no account, no server, no analytics, no ads, no tracking. FREE AND PRO The reference library search, unit conversions, and end of line resistor reference are free forever. LoopWatt Pro unlocks the full calculator suite, the inspection flow with PDF reports, all forms, and the guided troubleshooting trees, as a monthly or annual subscription or a one time lifetime unlock. Support: https://thrasherapps.com/loopwatt/support.html Privacy: https://thrasherapps.com/loopwatt/privacy.html Terms of Use (EULA): https://thrasherapps.com/loopwatt/terms.html LoopWatt is a field aid, not a substitute for NFPA 72, NEC Article 760, NFPA 101, the engineered drawings, or the manufacturer manuals. Work must be performed and verified by a qualified, certified person (NFPA 72 Chapter 10). Calculations are estimates to be verified by a qualified person. ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | LoopWatt Pro Annual | $49.99 | per year | | LoopWatt Pro Monthly | $6.99 | per month | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | LoopWatt Pro Lifetime | $99.99 | one-time | ## Version history (last 5 releases) ### 1.1.3 — 2026-08-24 PANEL TROUBLE MESSAGES Look up what your panel is actually showing you. Forty five messages across Notifier and Simplex, each with what the message means and then an ordered list of what to check, most likely cause first. NO ANS leads with the device being twisted loose in its base, and tells you that several addresses going quiet together is an open circuit rather than a run of dead devices. INVREP leads with duplicate addressing, because two devices answering one poll is the classic cause and it produces exactly the wandering intermittent faults that eat a whole visit. On Simplex, Short Circuit clears itself once the short is gone, so it doubles as confirmation the repair worked. IDNAC Sig Unpowered has an order to it: correct the overcurrent first, then hardware reset, because the card will not restore while the fault is live. Earth fault tells you which polarity is at fault, which halves the search before you leave the panel room. Ground fault and earth fault entries carry the impairment steps and the rule that once a section comes off, it stays off, because faults sit on more than one section more often than people expect. More panels to follow. ### 1.1.2 — 2026-08-23 GROUND FAULT LOCALIZATION, REBUILT The ground fault tree was rewritten around what sixteen working fire alarm technicians actually do on a call. The old version started at half splitting. Turns out that is roughly step six. The sequence now starts where the techs start: ask the customer, but treat the answer as a lead and not a fact. Check the panel event history. Rule out the panel itself by pulling the field wire and resetting, which takes two minutes and every so often ends the job right there. Then walk the loop against a usual suspects list before you start splitting anything. That list came from the field, not from a manual. Blown surge suppressors. Backflow vaults and their tampers. Flow switches. Walk in freezers, where ceiling devices fill with condensation. Duct smokes and hot attic smokes. School gyms, where devices get hit by balls. And the point where the cable sheathing was cut and a conductor or the foil shield got nicked. The half split step now carries the warning nobody publishes: once you remove a circuit, KEEP IT REMOVED. Faults can sit on more than one circuit at once, and restoring each one as you go makes it look like the fault never clears. That single habit can waste an entire visit. Also added: the directional ohms reading, flagged as contested because working techs genuinely disagree about it. An alternative junction based approach from an eight year service tech. And the shortcuts, a TDR for distance to fault and a toner for walking the segment. TELL ME WHAT TO ADD NEXT There is now a contact button in Settings. If a panel, a code table, or a trouble family you work on is missing, say so and it gets built. Requests from working technicians set the priority. Plus a short agreement on first launch covering what the app is and is not. Accept once and it is gone. ### 1.1.1 — 2026-08-20 You can now tell me what to add next. Settings has a new option that opens an email straight to me. If a calculation is wrong, a code is missing, or there is something this app should do and does not, that is the fastest way to say so. I read all of it, and I would rather be corrected than keep shipping something wrong. ### 1.0.1 — 2026-08-17 This update rebuilds the ground fault troubleshooting tree and cleans up the purchase screen. Ground fault troubleshooting, rewritten with working technicians. The signaling line circuit ground fault decision tree now follows the real field sequence instead of jumping straight to half splitting: start with the customer, read the panel event history, rule out the panel itself in two minutes, walk the loop, then half split, with the critical reminder to leave each circuit removed while you isolate so simultaneous faults do not fool you. It adds a usual suspects list (surge suppressors, backflow vaults and tampers, walk in freezers, duct and attic smokes, and more), an alternative junction based approach, and notes on using a time domain reflectometer or a toner to find the fault faster. The purchase screen now shows current App Store prices for your region. Everything still works fully offline: every reference, calculator, form, and troubleshooting tree ships inside the app. ### 1.0 — 2026-07-30 No release notes. ## More apps by Chris Thrasher - [DropTubeBuilder: Fuel Tanks](https://appshunter.io/ios/app/droptubebuilder-fuel-tanks/id6740597739) - [Lava Dash](https://appshunter.io/ios/app/lava-dash/id6742521742) - [StreakQuest](https://appshunter.io/ios/app/streakquest/id6743329674) - [BlockThrasher: Neon Puzzle](https://appshunter.io/ios/app/blockthrasher-neon-puzzle/id6746172717) - [TrialMate: Attorney Case Prep](https://appshunter.io/ios/app/trialmate-attorney-case-prep/id6748589882) - [Side Work Tax](https://appshunter.io/ios/app/side-work-tax/id6782625305) All apps by Chris Thrasher: https://appshunter.io/developer/1790762521 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*