Comparison

Ref Tools vs AI Appliance Tech

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

AI Appliance Tech

Get instant, expert repair help for your appliances without needing a service call. Simply input your appliance model and describe the issue to receive step-by-step, jargon-free instructions for troubleshooting and repair.

Highlights
  • Instant AI diagnosis
  • Step-by-step repair instructions
  • Appliance model number input
  • Problem description or common issue selection
  • Error code decoding
  • Support for washers and dryers
Read full description

Fix your appliance. Skip the $150 service call. AI Appliance Tech gives you expert repair help in seconds — no appointments, no waiting. Whether your washer won’t drain, your fridge stopped cooling, or you’re staring at a confusing error code, we’ve got you covered. Just enter your model number, describe the problem (or pick from common issues), and get step-by-step guidance tailored to your exact appliance. What You’ll Get: • Instant diagnosis from a trained AI repair tech • Clear, step-by-step instructions — no jargon • Support for washers, dryers, fridges, dishwashers & more coming soon! • Common issues, part suggestions, and error code decoding • Trusted by DIYers, landlords, and even other techs Why pay $150 for something you can fix yourself? AI Appliance Tech helps you troubleshoot and repair like a pro — without the price tag. Download now and fix it fast. EULA https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Ref Tools4 screens
AI Appliance Tech4 screens

Verdict

The call

The clearest difference is rating: AI Appliance Tech at 5.0 against Ref Tools's 3.9. AI Appliance Tech also leads on review sentiment (100% vs 58%) and update cadence (weekly vs every 5 weeks). Ref Tools's advantage is in-app purchases (none vs 2) and ratings volume (52 vs 5). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AI Appliance Tech sells 2 in-app purchases, starting at $4.99 per 7 days. Ref Tools asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

AI Appliance Tech 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. Written reviews point the same way: 58% of Ref Tools's written reviews are positive against 100% of AI Appliance Tech's.

UpkeepUpdate frequency

Ref Tools ships an update every 5 weeks, AI Appliance Tech weekly. The most recent releases landed on September 26, 2026 and September 12, 2026 respectively.

Scorecard7 real differences · 3 level
Ref Tools versus AI Appliance Tech: the parameters behind the verdict, then further details
ParameterRef ToolsAI Appliance Tech
PriceFreeFree
Rating3.9 (52 ratings)5.0 (5 ratings) — better
Positive reviews57.6% of reviews100.0% of reviews — better
Number of ratings52 — better5
Update frequencyEvery 5 weeksWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.4
Further details — not scored
Size98 MB42 MB
Age rating4+17+
DeveloperDanfoss A/SJulius Elshada

Customer experience

Ref Tools

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

AI Appliance Tech

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Ref Tools

No in-app purchases

2 purchases

AI Appliance Tech

Subscriptions2
  • Premium Weekly$4.997 Days
  • Premium Monthly$19.991 Month

Questions

Is Ref Tools free?
Ref Tools is free to download, with no in-app purchases.
Is AI Appliance Tech free?
AI Appliance Tech is free to download, with in-app purchases available.
Which has better reviews, Ref Tools or AI Appliance Tech?
AI Appliance Tech is rated higher. Ref Tools averages 3.9 out of 5 from 52 ratings, while AI Appliance Tech averages 5.0 from 5 ratings.
Do Ref Tools or AI Appliance Tech have ads?
Neither Ref Tools nor AI Appliance Tech shows ads.
Which is updated more often, Ref Tools or AI Appliance Tech?
Ref Tools ships an update every 5 weeks, and AI Appliance Tech weekly. Most recently, Ref Tools was updated on September 26, 2026 and AI Appliance Tech on September 12, 2026.

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