# Heat Index: Worksite Safety — Live sensor heat-break alerts > Real-time worksite heat index monitoring and break alert companion app. (iPhone/iPad app by Ninville Keith.) - Source: https://appshunter.io/ios/app/heat-index-worksite-safety/id6777557760 (this page in markdown: same URL + `.md`) - Developer: [Ninville Keith](https://appshunter.io/developer/6777557762) - Category: Utilities, Business - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 6 MB - Languages: American English - Released: 2026-06-16 - Data updated: 2026-07-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/heat-index-worksite-safety/id6777557760/reviews.md ## What is Heat Index? When the heat climbs on a worksite, every crew needs the same clear answer: is it hot enough for an extra break right now? Heat Index gives you that answer in real time — straight from a sensor on your own site. Heat Index is the companion app for a connected worksite heat sensor. A small on-site device (a Raspberry Pi with a temperature and humidity sensor) reads conditions every hour, calculates the true "feels-like" heat index, and sends it securely to your team. Open the app — or just glance at the Home Screen widget — to see the current reading and whether today's extra heat break has been authorized. It's built for the people responsible for crews in the heat: warehouse and packing-floor supervisors, operations and EHS managers, commercial kitchens, and any jobsite where temperature drives safety decisions. WHAT YOU GET • Live now — the current heat index in big, glanceable numbers, with temperature and humidity. Green means an extra break is on; blue means conditions are below the threshold. • Home Screen widget — small, medium, and large sizes show the latest reading without opening the app. • 12-month history — daily peaks roll up into a clean monthly chart so you can see the whole season at a glance. • Sensor health — keep an eye on the Raspberry Pi's own temperature so your data never quietly drops out. • Controlled team access — each member joins your organization with a code, and an administrator approves who gets in. Your readings stay inside your organization. HOW IT WORKS Heat Index pairs with a connected sensor reporting from your site. You'll need an organization code from your administrator to join, and a sensor reporting data for your location. Once you're approved, the app opens straight to your live reading. SIGN IN Create an account with email and password, or use Sign in with Apple. You can delete your account and all of its data from inside the app at any time. PRIVACY We collect only what's needed to sign you in and connect you to your organization — your email, name, and account identifier. No ads. No tracking. No third-party analytics. Heat Index turns one sensor into one shared answer for the whole crew — so the call to take a break is based on real conditions, not guesswork. ## Key features - Live heat index readings - Home Screen widget - 12-month history chart - Sensor health monitoring - Controlled team access - Real-time temperature and humidity data ## Frequently asked questions about Heat Index ### What is Heat Index? Heat Index is a companion app for a connected worksite heat sensor. It displays real-time temperature and humidity readings to help determine if extra breaks are authorized due to heat. ### How does Heat Index work? Heat Index pairs with a Raspberry Pi sensor that measures site conditions hourly. The app then securely transmits this data to your team, showing the current heat index and break status. ### Who is Heat Index for? This app is designed for supervisors, operations managers, and EHS managers in environments like warehouses, packing floors, commercial kitchens, and any jobsite where temperature impacts safety decisions. ### Does Heat Index have ads? No, Heat Index is ad-free. The app explicitly states 'No ads. No tracking. No third-party analytics.' ### What platforms is Heat Index available on? Based on the provided data, Heat Index is currently supported on iPhone. ### How often is Heat Index updated? The app was last updated on 2026-06-17, indicating ongoing development and maintenance. ### Is Heat Index free to use? Yes, Heat Index is available for free. There are no in-app purchases mentioned. ### What is the age rating for Heat Index? Heat Index has an age rating of 4+, making it suitable for a wide range of users. ## Version history (last 1 release) ### 1.0 — 2026-06-17 No release notes. ## Related topics [heat index](https://appshunter.io/ios/topics/heat-index) --- *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 2026-07-10.*