Best Hotstart Heater Sizing App

249+ iOS apps curated and reviewed

3.8 avg rating

20 free apps

Updated September 2026

Hotstart Heater Sizing App is the household name in hotstart heater sizing app, but it's far from the only option. We track 249+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Hotstart Heater Sizing App (September 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Hotstart Heater Sizing App	Free	5.0★ (2)	No	No	May 2026
2	Mr. Heater®	Free	—	No	No	May 2026
3	Boiler Buddy App	Free	—	—	No	Jul 2026
4	WiFi Heater	Free	—	No	No	May 2026
5	NEX APP	Free	1.0★ (1)	No	No	May 2026
6	COOPERMASTER	Free	—	No	No	May 2026
7	OSHA-NIOSH Heat Safety Tool	Free	2.6★ (314)	No	No	Sep 2026
8	telliSize	Free	5.0★ (3)	No	No	May 2026

Top Picks for Hotstart Heater Sizing App

Hotstart Heater Sizing App by HotStart

Editor's Choice

💼 Business

5.0(2 ratings)

Free

This application helps users select the optimal engine heater for industrial applications. It considers factors like fluid type, environmental conditions, and power requirements to provide a recommended solution. Users can then contact the developer to confirm their heater choice.

Mr. Heater® by Enerco Group, Inc.

Strong Contender

🔧 Utilities

0.0(0 ratings)

Free

Boiler Buddy App by James Roberts

Worth Considering

🔧 Utilities

0.0(0 ratings)

FreeIn-App Purchases

More Hotstart Heater Sizing App apps to explore

WiFi Heater

Ultimate Heater Control Hub!

by HeatQ Technology Sp. z o.o.

Free

Control and program your home heating devices remotely for optimal thermal comfort and energy efficiency. Manage towel rails, local heaters, and central heating elements from your mobile device.

Remote programming of heating devicesIntelligent heat distributionOptimized electricity consumption

OSHA-NIOSH Heat Safety Tool

by Centers For Disease Control and Prevention

Free

This tool helps outdoor workers stay safe by providing real-time heat index information and hourly forecasts specific to their location. It offers occupational safety recommendations and details on heat-related illnesses and their first aid.

Real-time heat index and risk levelsHourly heat index forecastOccupational safety recommendations

Quickly size water heater applications and generate project schematics, plumbing layouts, and submittals. Calculations are based on real-world test data and proven sizing methods.

Water heater application sizingProject schematics generationPlumbing layout creation

💼 Business

(3)

free

F.W. Webb Mobile Ordering App

Official app for F.W. Webb

Free

This app provides trade professionals with a mobile platform to shop for plumbing, heating, HVAC, electrical, and industrial supplies. It features powerful search tools, including image and voice search, barcode scanning, and easy account management for placing and tracking orders.

Product search with image and voice optionsBarcode scanning for instant pricingOrder tracking and management

Infrared Thermal Imager

Free

This utility app functions as a thermal camera, offering a wide temperature measurement range. It allows users to capture images and videos, track high and low temperatures, and set custom alarms for temperature thresholds. The app also supports various regional temperature measurement modes.

Wide temperature measurement rangePicture and video captureHigh and low temperature tracking

🔧 Utilities

(1)

free

Samitech Heat Treatments

Superior Design and Heat.

Free

Control your Bromic heaters remotely via Bluetooth or Wi-Fi. Create heating zones, schedule custom scenes, and set timers for convenience. Monitor usage and costs for efficient operation.

Remote heater control (Bluetooth/Wi-Fi)Zone creation for multiple heatersCustomizable heating scenes

Stay Safe Wherever You Are

Free

This app uses real-time weather data to calculate heat stress risk for outdoor workers. It provides customized alerts for rest, hydration, and changing conditions, along with safety resources.

Real-time weather data integrationWet Bulb Globe Temperature calculationCustomizable risk scoring

Measure. Detect. Insulate.

Free

This tool simplifies home repair and remodeling by offering instant room measurements and thermal imaging to detect energy loss. It provides tailored insulation recommendations for various climate zones to improve energy efficiency and comfort.

Instant room measurement calculationsThermal imaging for energy loss detectionFiberglass insulation recommendations

APP to control heated textiles

Free

Control your heated textiles with ease. Adjust heat levels, activate stand-by mode, and manage storage settings for your battery packs.

Adjust heat levelsStand-by modeStorage mode

Cool technology for hot water

Free

Control your water heater remotely, monitor hot water levels, and receive maintenance alerts. Optimize heating schedules for convenience, comfort, and safety, while also saving on energy costs.

Remote water heater controlHot water level monitoringScheduling and usage patterns

Remotely monitor and control your home's heating and cooling systems from your iPhone, iPad, or iPod Touch. Adjust your thermostat, check current weather, and receive important equipment alerts from anywhere.

Remote thermostat monitoringRemote thermostat controlCurrent weather and forecast display

📊 Productivity

(46)

free

Dimplex Quantum heater sizing guide

by GLEN DIMPLEX EUROPE HOLDINGS LIMITED

Free

🔧 Utilities

(0)

FAQ about Hotstart Heater Sizing App

What is the best hotstart heater sizing app for iPhone?

Hotstart Heater Sizing App tops our hotstart heater sizing app ranking as of September 2026, with a 5.0-star average from 2 App Store ratings, and it's free to download.

Are there free hotstart heater sizing app for iPhone?

Yes — 20 of the top hotstart heater sizing app we rank are free to download, including Hotstart Heater Sizing App and Mr. Heater®.

Does Hotstart Heater Sizing App have ads or in-app purchases?

Hotstart Heater Sizing App has no ads and has no in-app purchases, according to its App Store listing as of September 2026.

How many hotstart heater sizing app are on the App Store?

We track 249+ hotstart heater sizing app on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.

What types of fluids can Hotstart Heater Sizing App help with?

Hotstart Heater Sizing App can assist with selecting heaters for critical fluids such as coolant, oil, hydraulic fluid, and water used in various industrial equipment.

What information is needed to use the Hotstart Heater Sizing App?

To use the app, you will need to provide application dimensions, environmental conditions, desired heat output, mounting requirements, voltage, and phase for your specific project.