# HEAT3D Pro — Measure Heat Flow and U Values

> Measure Heat Flow and U Values (iPhone/iPad app by Electric Pocket.)

- Source: https://appshunter.io/ios/app/heat3d-pro/id1362512281 (this page in markdown: same URL + `.md`)
- Developer: [Electric Pocket](https://appshunter.io/developer/324114799)
- Category: Utilities, Education
- Price: $690.00
- Age rating: 4+
- Requires: iOS 13.0 · 126 MB
- Languages: American English
- Released: 2018-05-14
- Data updated: 2026-08-21
- User reviews in markdown: https://appshunter.io/ios/app/heat3d-pro/id1362512281/reviews.md

## What is HEAT3D Pro?

Heat3D allows you to precisely measure heat flow and U-values of building elements using a low-cost, quick and non-invasive method.

Heat3D is designed to work on iPhones and iPads and uses a portable thermal camera to obtain results in an hour as opposed to days or weeks using heat flux plates. The rapid nature of the measurement enables quantified U-values that are more accurate than manual calculation methods but achievable in a similar amount of time.

The Heat3D iOS app uses Apple ARKit to detect room features such as walls, floors and ceilings and construct a 3D model. When combined with a FLIR portable camera, infrared thermal images are projected onto the 3D model showing the heat signature through each surface. Quantitative infrared thermography is used to calculate the heat loss or gain through these surfaces and calculate the U-value.

Measuring an accurate U value across an entire element with Heat3D can take as little as 1-hour meaning that the measurement of actual U-values is now possible in all projects.

There is short video demonstrating how to use HEAT3D to capture a 3D energy survey of a room in 1 minute on the HEAT3D website - https://heat3d.net

Why measure U-values using Heat3D?

-Improved EPC accuracy
	Use the measured U value in EPC reports as opposed to calculated ones that can be +/-50% or more out.
-Determine insulation levels
          Understand baseline thermal transmittance of walls and current insulation levels, allowing better target investment in insulation upgrades.
-Retrofit improvement
          Measure before and after insulation upgrades or retrofit works to determine the true energy, running cost and CO₂ savings delivered by improvements.
-Check quality assurance
         Check that the actual performance meets the designed performance. Identify poor installations, workmanship and conduct quality assurance testing.
-Reduced remedial work
         Measure during works and before completion to check that desired outcomes are being achieved. Save time, costs and improve quality by identifying issues and reducing remedial action.

Who is Heat3D designed for?

Heat3D can be used by anyone who wants to know the U-value or thermal performance of building elements in-situ. Measurements can be taken before, during and after insulation upgrades to verify performance improvements; Architects, Building Managers, Building Surveyors, Energy Assessors, House Builders, Insulation Installers, Retrofit Coordinators, Sustainability Consultants

A GPS enabled iPhone or iPad device with ARKit is required ( Wifi only iPad is not supported). You’ll need a FLIROne® camera. We recommend using the FLIR One Pro if possible, it will produce more accurate measurements and with higher resolution. An enviromental and a radiative temperature target is required to achieve ISO 9869 part 2 accuracy with HEAT3D Pro. Please contact business@electricpocket.com for advice on obtaining these.

ARKit Compatible devices
iPhone 8 and later
iPhone X and later
iPad (2019) and later

Heat3D is the product of years of research and real-world testing into quantitative infrared thermography techniques.  It has been successfully tested and proven in the lab and over 24 buildings of varying construction and age and shown to provide the same level of accuracy for heat flow and U value measurements as the very expensive and time consuming ISO 9869 standards approved HeatFlux plate method.

Acknowledgements:-
The research and development behind HEAT3D was part funded by Innovate UK and supported by the Energy Houses at Salford University.

Privacy: https://electricpocket.com/privacy.html


## Version history (last 5 releases)

### 4.0.14 — 2026-06-04

Improvement to Calibration UI vs FLIR battery percentage

### 4.0.12 — 2026-02-27

Support for latest FLIR SDK
Bug fixes and performance improvements

### 4.0.10 — 2025-06-11

iPhone 15 and later devices with UBS-C now supported with USB-C FLIROne

### 4.0.9 — 2024-10-22

- Floor heat flow and U values can now be measured
- Auto-positioning of targets and zone for timelapse measurements with AprilTag Targets
- Adaptive timelapse feature to ensure accuracy of U value measurements

Surveys now listed on device in reverse time order (most recent first)
FLIROne Edge support
Live timelapse graphs viewable on other devices during a survey via local web page and share button ( e.g. http://my_iphone_name.local)
Timelapse Survey data and graphs can now be viewed directly on the device for completed surveys (graph button)
UI improvements

### 4.0.8 — 2024-01-19

GPS status button added to main screen. Green if accurate to 3km or better and within the last 15 minutes.
Show where the Timelapse zone TestZone will be in orange once air target has been acquired & before the tiles are captured.
Improve text layout for target temperatures ( stop them overlapping)
Option to manually enter Energy kWH cost and CO2 values iso using HEAT3D ones ( which use location, average temp and local energy pricing lookup tables)

## Apps similar to HEAT3D Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Decibelmeter - dB](https://appshunter.io/ios/app/decibelmeter-db/id1521325229) | 4.6 (712) | Free | Utilities |
| [AirChord](https://appshunter.io/ios/app/airchord/id1343901847) | 4.6 (99) | Free | Utilities |
| [Compress Photo & Video](https://appshunter.io/ios/app/compress-photo-and-video/id6450136279) | 4.7 (87) | Free | Utilities |
| [PoerSmart](https://appshunter.io/ios/app/poersmart/id1112805134) | 2.3 (4) | Free | Utilities |
| [Monimoto](https://appshunter.io/ios/app/monimoto/id1236727834) | 3.7 (27) | Free | Utilities |
| [Txt2PDF - TXT File to PDF](https://appshunter.io/ios/app/txt2pdf-txt-file-to-pdf/id1363475563) | 1.7 (6) | Free | Utilities |

## More apps by Electric Pocket

- [BugMe! Stickies](https://appshunter.io/ios/app/bugme-stickies/id361195700)
- [HEAT3D](https://appshunter.io/ios/app/heat3d/id6470808294)

All apps by Electric Pocket: https://appshunter.io/developer/324114799

---

*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 2026-08-21.*