HEAT3D Pro vs bmLogger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HEAT3D Pro
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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
bmLogger
This app connects to Bluetooth sensors to provide real-time temperature and humidity monitoring. It allows for data logging, historical analysis, and customizable alerts for various environmental conditions. Ideal for cold chain compliance, food safety, and climate control.
- Real-time temperature and humidity readings
- Data logging and historical graphs
- CSV data export
- Multiple sensor connection
- Customizable alerts
- Offline functionality
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Connect to Blue Maestro Bluetooth sensors for real-time environmental monitoring. Perfect for cold chain compliance, food safety, and climate control. Description: bmLogger is the official companion app for Blue Maestro's professional-grade Bluetooth temperature and humidity sensors. Whether you're monitoring cold storage, tracking pharmaceutical shipments, or ensuring optimal conditions in your wine cellar, bmLogger delivers precise, reliable data right to your smartphone. KEY FEATURES Real-Time Monitoring Live temperature and humidity readings updated every second Signal strength indicator for connection quality Battery level monitoring for all connected devices Data Logging and History Download thousands of logged data points from your sensors View detailed graphs with zoom and pan functionality Export data as CSV files for analysis and compliance reporting Device Management Connect to multiple Blue Maestro sensors simultaneously Customize device names and add notes for easy identification Configure logging intervals from 1 second to 24 hours Set high and low temperature and humidity alerts Cloud Sync (Premium) Securely store your data in the cloud Access historical readings from any device Share reports with colleagues and clients PERFECT FOR Food Safety: Monitor refrigerators, freezers, and cold storage Healthcare: Track vaccine storage and medication temperatures Wine and Beverage: Ensure optimal cellar conditions Pharmaceuticals: Maintain cold chain compliance Data Centers: Monitor server room climate Agriculture: Track greenhouse conditions Home: Monitor any environment that matters to you Logistics: Track shipment conditions in transit SUPPORTED DEVICES Tempo Disc Temperature and Humidity Sensor Tempo Disc Temperature Sensor Tempo Disc Barometric Pressure Sensor Pacif-i Smart Thermometer And all current Blue Maestro Bluetooth sensors TECHNICAL SPECIFICATIONS Supports devices with logging capacities up to 100,000+ readings Configurable logging intervals Bluetooth Low Energy for extended battery life Works offline - no internet required for local monitoring Download bmLogger today and take control of your environmental monitoring with professional-grade precision. Keywords: temperature,humidity,sensor,bluetooth,monitoring,logger,thermometer,cold chain,data logger,climate What's New in Version 13.0.1: Improved calibration handling for latest generation sensors Enhanced data export functionality Performance optimizations Bug fixes and stability improvements
Screenshots
Verdict
The clearest difference is price: bmLogger at Free against HEAT3D Pro's $690.00. bmLogger also leads on update cadence (every 3 days vs every 5 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
bmLogger is free to download; HEAT3D Pro costs $690.00 up front. Neither carries in-app purchases, so what you see is what you pay.
HEAT3D Pro ships an update every 5 months, bmLogger every 3 days. The most recent releases landed on September 12, 2026 and September 17, 2026 respectively.
| Parameter | HEAT3D Pro | bmLogger |
|---|---|---|
| Price | $690.00 | Free — better |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 5 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 126 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Electric Pocket | Blue Maestro |
In-app purchases
HEAT3D Pro
No in-app purchases
bmLogger
No in-app purchases









