Comparison

Ref Tools vs Equipment Service Tool

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

Equipment Service Tool

This utility app helps heavy equipment professionals diagnose issues with fault code searches and perform essential calculations. It includes tools for Ohm's Law, unit conversions, and refrigerant charging, supporting numerous manufacturers.

Highlights
  • Fault code search (J1939 SPN/FMI)
  • Ohm's Law calculator
  • Unit conversion tool
  • Refrigerant charge calculator
  • Support for multiple heavy equipment manufacturers
  • Regular updates
Features
Read full description

Equipment Service Tool: Your Ultimate Heavy Equipment Companion! Gear up for unparalleled efficiency in heavy equipment maintenance with our iOS app, Equipment Service Tool. Tailored to meet the demands of professionals like you, this app is your go-to solution for fault code searches, essential calculations, and unit conversions, transforming the way you handle heavy machinery. Fault Code Search: Diagnose and resolve issues swiftly with our extensive fault code search feature. Designed for leading manufacturers including Allison, Bomag, Cummins, Deutz, Ghel, Hyundai, Mustang, Manitou, XCMG, and more. Equipment Service Tool provides detailed J1939 SPN and FMI codes for a seamless troubleshooting experience. Tools for Precision: Empower yourself with a suite of productivity tools: Ohm's Law Calculator: Calculate voltage, current, resistance, and power effortlessly. Unit Conversion: Streamline your work by converting pressure, temperature, and flow into different units with accuracy. Refrigerant Charge Calculator: Engineered for HVAC technicians, our app includes a specialized calculator for refrigerant charge by temperature. Ensure optimal cooling in R134a systems with precise calculations at your fingertips. Expanding Manufacturer Support: Stay ahead of the curve with our commitment to continuous improvement! Equipment Service Tool is dedicated to expanding its fault code database, adding support for additional manufacturers to keep you at the forefront of heavy equipment maintenance. Key Features: Intuitive fault code search with J1939 SPN and FMI codes. Tools for Ohm's Law, unit conversions, and refrigerant charge calculations. Manufacturer support for Bomag, Cummins, Deutz, Hyundai, XCMG, and more. Regular updates with additional manufacturer support and features. For Professionals, By Professionals: Developed with insights from industry experts, Equipment Service Tool is crafted to meet the unique needs of heavy equipment professionals. Whether you're a seasoned technician or a novice in the field, our app is your indispensable companion for efficient and accurate maintenance. Download Equipment Service Tool Now and Master Heavy Equipment Maintenance! Upgrade your toolkit and elevate your performance with the ultimate iOS app for heavy equipment professionals. Embrace precision, streamline workflows, and conquer challenges – all at your fingertips! --- Monthly subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage your subscription and turn off auto-renewal in your Account Settings after purchase. Privacy Policy: https://projects.voltare.us/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Ref Tools4 screens
Equipment Service Tool4 screens

Verdict

The call

The clearest difference is rating: Equipment Service Tool at 5.0 against Ref Tools's 3.9. Equipment Service Tool also leads on review sentiment (100% vs 58%). Ref Tools's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price, update cadence and device support 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. Equipment Service Tool sells 2 in-app purchases, starting at $0.99 per month. Ref Tools asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Equipment Service Tool 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 4, so its average is the more settled of the two. Written reviews point the same way: 58% of Ref Tools's written reviews are positive against 100% of Equipment Service Tool's.

UpkeepUpdate frequency

Ref Tools ships an update every 5 weeks, Equipment Service Tool every 2 months. The most recent releases landed on September 26, 2026 and July 8, 2026 respectively.

Scorecard7 real differences · 3 level
Ref Tools versus Equipment Service Tool: the parameters behind the verdict, then further details
ParameterRef ToolsEquipment Service Tool
PriceFreeFree
Rating3.9 (52 ratings)5.0 (4 ratings) — better
Positive reviews57.6% of reviews100.0% of reviews — better
Number of ratings52 — better4
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size98 MB7 MB
Age rating4+12+
DeveloperDanfoss A/SKaleb Simpson

Customer experience

Ref Tools

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

Equipment Service Tool

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Ref Tools

No in-app purchases

2 purchases

Equipment Service Tool

Subscriptions1
  • Pro - One Month$0.991 Month
One-time1
  • Lifetime Unlock$9.99

Questions

Is Ref Tools free?
Ref Tools is free to download, with no in-app purchases.
Is Equipment Service Tool free?
Equipment Service Tool is free to download, with in-app purchases available.
Which has better reviews, Ref Tools or Equipment Service Tool?
Equipment Service Tool is rated higher. Ref Tools averages 3.9 out of 5 from 52 ratings, while Equipment Service Tool averages 5.0 from 4 ratings.
Do Ref Tools or Equipment Service Tool have ads?
Equipment Service Tool shows ads; Ref Tools does not.
Which is updated more often, Ref Tools or Equipment Service Tool?
Ref Tools ships an update every 5 weeks, and Equipment Service Tool every 2 months. Most recently, Ref Tools was updated on September 26, 2026 and Equipment Service Tool on July 8, 2026.

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