Comparison

Ref Tools vs BTU XT

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Ref Tools

This app provides HVACR technicians with essential tools and information for field service. It includes refrigerant calculators, troubleshooting guides, product finders, and access to spare parts. Listen to educational podcasts to enhance your knowledge on the go.

Highlights
  • Refrigerant Slider for P/T calculations
  • Solenoid valve coil testing tool
  • Refrigeration system troubleshooting guide
  • Product data finder
  • Spare parts ordering
  • Low-GWP refrigerant comparison
  • TXV Superheat optimization
  • Educational podcasts
Features
Read full description

Get the guidance, support, information, and tools you need—on the job and in the field. Ref Tools is a free, powerful app that contains essential tools every HVACR technician needs in their digital toolbelt. Ref Tools offers a collection of useful air conditioning and refrigeration tools: Refrigerant Slider As a featured part of Ref Tools, you get all the features and functionality that made Refrigerant Slider a hit with millions of installers around the world. Quickly calculate pressure/temperature ratios and find essential information on over 80 refrigerants. Magnetic Tool Test and troubleshoot solenoid valve coils quickly and easily. Troubleshooter Get help diagnosing issues in refrigeration systems, so you can quickly identify symptoms and find recommended solutions. Product Finder Find extensive product-related data in one place. Search by product code number or product category to access and share product specifications, documentation, visuals, and more. Spare Parts Access and order an extensive list of Danfoss spare parts and service kits for air conditioning and refrigeration applications. Low-GWP Tool Find and compare climate-friendly refrigerants for retrofitting by checking compatibility with the TXV. TXV Superheat Tuner Optimize superheat in less than 15 minutes. Using advanced algorithms, TXV Superheat Tuner provides valve-specific adjustment recommendations. Podcasts The workday can be full and the road long, so Ref Tools also provides you with some educational entertainment. You can listen to podcasts, including the popular Chilling with Jens podcast, directly in the app. So, take a break and chill out a bit while learning something new about refrigeration. More about Refrigerant Slider Refrigerant Slider, now a part of Ref Tools, helps you quickly calculate the pressure-to-temperature ratio for more than 80 refrigerants, including natural refrigerants such as ammonia and transcritical CO2. Refrigerant Slider also provides you with information about each refrigerant, including Global Warming Potential (GWP) and Ozone Depleting Potential (ODP). You can switch between the IPCC AR4 and AR5 values, where AR4 values are used in relation to the European F-Gas regulations. Refrigerant Slider’s P/T calculations use extended curve–fitting models based on Refprop 10 results. You can also see both dew and bubble point for refrigerants with glide. Streamline your workflow Ref Tools goes beyond just providing quick access to helpful tools; it helps you save time by allowing you to track your most visited service sites and save unique settings for each one. Simplify each service call with ease. Feedback Your input matters – we would love to hear it from you. We're committed to continuously improving Ref Tools to meet your needs. If you encounter a bug or have a feature suggestion, please use the in-app feedback function available in Settings. Alternatively, you can reach us via email at coolapp@danfoss.com. Danfoss Climate Solutions At Danfoss Climate Solutions, we engineer energy-efficient solutions to help the world get more out of less. Our innovative products and solutions enable a decarbonized, digital, and more sustainable tomorrow, and our technology supports a cost-efficient transition to renewable energy sources. With a strong foundation in quality, people, and the climate, we drive the energy, refrigerant, and food system transitions needed to achieve climate goals. Read more about us at www.danfoss.com. Terms and Conditions apply for use of the app.

About

BTU XT

Monitor and control agricultural storage environments remotely. Securely access unit status, view detailed equipment data, and adjust control panel parameters with a familiar interface. Designed for ease of use with a simple human-machine interface.

Highlights
  • Remote environment monitoring
  • Secure user login
  • View unit status and parameters
  • Detailed equipment data display
  • Adjust control panel settings
  • Familiar HMI interface
Features
Read full description

The BTU XT app is designed to provide the storage manager with a simple and easy human machine interface (HMI) to view and control the environment in multiple agriculture storages. This is a secure interface using a user name and password. Once logged in, the app will display the status and main parameters of all authorized units on a main summary page. Each unit can then be selected and multiple displays will show all data and status of equipment. Pages are selected by swiping sideways. A single touch will bring back the summary page at any time. This app allows the user to make changes to any of the control panel parameters. When making parameter changes, a second login unique to the selected panel must be verified for security. All screens in this app are identical to the local HMI so the user will be familiar with the operation.

Screenshots

Ref Tools4 screens
BTU XT4 screens

Verdict

The call

The clearest difference is rating: BTU XT at 5.0 against Ref Tools's 3.9. BTU XT also leads on iOS requirement (11.0 vs 15.0). Ref Tools's advantage is ratings volume (52 vs 5) and update cadence (every 5 weeks vs every 2 months). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

BTU XT holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Ref Tools has 52 ratings behind it against 5, so its average is the more settled of the two.

UpkeepUpdate frequency

Ref Tools ships an update every 5 weeks, BTU XT every 2 months. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

Scorecard4 real differences · 6 level
Ref Tools versus BTU XT: the parameters behind the verdict, then further details
ParameterRef ToolsBTU XT
PriceFreeFree
Rating3.9 (52 ratings)5.0 (5 ratings) — better
Positive reviews57.6% of reviews—
Number of ratings52 — better5
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size98 MB8 MB
Age rating4+4+
DeveloperDanfoss A/SBTU Ventilation

Customer experience

Ref Tools

All ratings52 ratings
Positive73.1%
Neutral3.8%
Negative23.1%
Written reviews66 reviews
Positive57.6%
Neutral7.6%
Negative34.8%

BTU XT

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Ref Tools

Reported bugs

27 issues
  • CRASHED instantly on Mac Mini M4
  • App won’t open on iPhone
  • App flashes up and disappears
  • Cannot open app
  • Immediately shuts off since recent release
Show 22 more
  • Crash au lancement since update
  • Will not save to Home Screen
  • Incorrect PT Charting for r134a
  • Information doesn’t slide down
  • Crashes on iOS12.1.4
  • App won’t open since previous update
  • List of refrigerants shifted upwards on iPhone 10
  • Stuck on R134a, needs update for current iOS
  • R744A only goes to 60 psi
  • Scale did not go low enough for deep vacuum
  • Missing R22 on Apple version
  • Missing R717 (Ammonia)
  • Missing R-22
  • Missing R124a
  • No longer lists Ammonia
  • Missing Refrigerants since app update
  • Missing Ammonia and CO2
  • r410a is missing since update
  • Removed r22, 410a, and 407c
  • Refrigerants missing now
  • Removed slider for ammonia
  • Scale doesn't go into vacuum

Requested features

18 requests
  • More residential AC information
  • Troubleshooter for Residential & Commercial
  • Add SP22 refrigerant
  • Add R-11 refrigerant
  • Add R-123 range down to 40 degrees
Show 13 more
  • Add R744 and R744A to 0 psia
  • Scale to go lower for R-123 vacuum
  • Add R410a
  • Add R407c
  • Add R404A
  • Add R22
  • Add R124a
  • Add Ammonia
  • Add CO2
  • Add R717 (Ammonia)
  • Scale going higher on CO2
  • Setting for high altitude
  • Scale to go into vacuum

BTU XT

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Ref Tools

No in-app purchases

None

BTU XT

No in-app purchases

Questions

Is Ref Tools free?
Ref Tools is free to download, with no in-app purchases.
Is BTU XT free?
BTU XT is free to download, with no in-app purchases.
Which has better reviews, Ref Tools or BTU XT?
BTU XT is rated higher. Ref Tools averages 3.9 out of 5 from 52 ratings, while BTU XT averages 5.0 from 5 ratings.
Do Ref Tools or BTU XT have ads?
Neither Ref Tools nor BTU XT shows ads.
Which is updated more often, Ref Tools or BTU XT?
Ref Tools ships an update every 5 weeks, and BTU XT every 2 months. Most recently, Ref Tools was updated on October 7, 2026 and BTU XT on October 1, 2026.

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