# HeatOK: Heat Index & WBGT — Wet Bulb Temperature & Safety

> Wet Bulb Temperature & Safety (iPhone/iPad app by Vadym Slobodianiuk.)

- Source: https://appshunter.io/ios/app/heatok-heat-index-and-wbgt/id6805369693 (this page in markdown: same URL + `.md`)
- Developer: [Vadym Slobodianiuk](https://appshunter.io/developer/1502836361)
- Category: Weather, Health & Fitness
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 18.0 · 18 MB
- Languages: American English, Arabic, French (France), German (Germany), Italian, Japanese, European Portuguese, European Spanish, Chinese (Traditional, Taiwan), Ukrainian
- Released: 2026-09-03
- Data updated: 2026-09-08
- User reviews in markdown: https://appshunter.io/ios/app/heatok-heat-index-and-wbgt/id6805369693/reviews.md

## What is HeatOK?

HeatOK helps you understand hot, humid weather before you head outside.

See the current Heat Index, Wet-Bulb Temperature (WBT), and Estimated Wet-Bulb Globe Temperature (WBGT), then plan around the lower-risk hours in your day.

With HeatOK, you can:
• Use Heat Index, Estimated WBGT, or air temperature as your primary scale.
• See Wet-Bulb Temperature, globe temperature, humidity, dew point, wind, and UV Index together.
• Follow the hourly heat path and check the day ahead.
• Choose an outdoor context for relevant precautions, including exercise, outdoor work, caregiving, and dog walks.
• Save places, use Home Screen widgets, and set personal threshold alerts. Some features require HeatOK Pro.

Every reading identifies its scale, source, and data freshness. Estimated WBGT is calculated from forecast weather data and does not replace an on-site globe thermometer.

HeatOK provides weather information and general precautions. It is not medical advice or an emergency service.

Terms of Use: https://docs.google.com/document/d/1DQU5swaVHWejOGgZuZI94XEPqKfQTXp_Ej9gwHvx3nE/edit?usp=sharing
Privacy Policy: https://docs.google.com/document/d/1GVG0Mki7H7LBtjM6e5Veh-u3eUsobu4KY5h92uBhdVc/edit?usp=sharing

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| HeatOK Pro | $2.99 | per month |
| HeatOK Pro | $14.99 | per year |



## Version history (last 3 releases)

### 1.0.2 — 2026-09-07

Added support for Arabic, Italian, Japanese, Portuguese, and Traditional Chinese.
Performance improvements and bug fixes.

### 1.0.1 — 2026-09-04

Faster launch and location switching with instant weather data.
Smarter heat alert intervals, reliable refresh, and bug fixes.

### 1.0.0 — 2026-09-04

No release notes.

## More apps by Vadym Slobodianiuk

- [Rent95 - Car Rental](https://appshunter.io/ios/app/rent95-car-rental/id1502836362)
- [Randomy - Random value](https://appshunter.io/ios/app/randomy-random-value/id1505292514)
- [WLED Hub - LED light control](https://appshunter.io/ios/app/wled-hub-led-light-control/id6764351369)
- [Raider Reminder: ARC Events](https://appshunter.io/ios/app/raider-reminder-arc-events/id6778943735)
- [Workout Day: Planner & Tracker](https://appshunter.io/ios/app/workout-day-planner-and-tracker/id6779693720)

All apps by Vadym Slobodianiuk: https://appshunter.io/developer/1502836361

---

*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 2026-09-08.*