IIAR vs Dry Tools
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IIAR
This app provides members of the natural refrigeration community with advocacy, education, and technical information. It offers features for managing profiles, accessing conference resources, connecting with others, and staying updated on industry news.
- Profile management
- Conference resource access
- Session note-taking
- Speaker and exhibitor browsing
- Industry news updates
- Social media integration
- Member directory access
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"As the world's leading advocate for the safe, reliable and efficient use of ammonia and other natural refrigerants, IIAR sets the standard for providing advocacy, education and the most up-to-date technical information to the ammonia and natural refrigeration community. The IIAR app is the next tool available in the members’ tool belt. Features: - View and edit your profile - Full access to conference resources - View, update and send notes on your conference sessions - Browse speaker information - Check out exhibitors and exhibit hall floor plan - Read and share news and stories related to ammonia and other natural refrigerants - Connect through Facebook, LinkedIn, YouTube and Twitter - Easy to access member list - Set reminders for events and receive alerts Download the IIAR app now."
Dry Tools
This app provides HVAC professionals and students with essential calculation tools, including air stream mixing, HVAC formulas, lead time planning, and a psychrometric calculator with weather data. It also offers educational content and industry-specific terminology.
- Air Stream Mixing Calculator
- HVAC Formulas
- Lead Time Wheel
- Psychrometric Calculator
- Integrated Weather Data
- Educational Content
- Industry Glossary
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Dry Tools by CDI contains multiple tools to calculate Air Stream Mixing, HVAC formulas, Lead Times, as well as a Psychrometric calculator with integrated weather data for HVAC professionals and students. The app is designed to be your first step to calculating the conditions you need to achieve your critical mission. Key Features: Tools • Air Stream Mixing: Solve for mixed air conditions from any two airstreams . • HVAC Formulas: Handy, commonly used formulas where moisture in air is concerned. • Lead Time Wheel: Helpful tool for planning project lead times. • Psychrometric Calculator: Enter any two data points and get all the others. • Weather Data: GPS locator or search for ambient weather conditions worldwide. Education • Dr. Dry Talks: From relative humidity to vapor pressure, easy learning with dry humor. • Glossary: Not so common, commonly used terms in our industry. Products • Air Handling • Desiccant Dehumidification • Service More • Contact Us • About Us • To Our Competition In summary, Dry Tools will provide you with the tools you need in one handy app. Install the free App and get started on your psychrometric journey.
Screenshots
Verdict
The clearest difference is review sentiment: Dry Tools at 100% against IIAR's 50%. Dry Tools also leads on rating (5.0 vs 4.5) and iOS requirement (11.0 vs 13.0). On price, ratings volume, update cadence and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Dry Tools holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews point the same way: 50% of IIAR's written reviews are positive against 100% of Dry Tools's.
IIAR ships an update every 4 months, Dry Tools every 6 months. The most recent releases landed on July 4, 2026 and June 11, 2026 respectively.
| Parameter | IIAR | Dry Tools |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (4 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 | 5 — better |
| Update frequency | Every 4 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 37 MB | 45 MB |
| Age rating | 12+ | 12+ |
| Developer | International Institute of Ammonia Refrigeration | CLIMATE BY DESIGN INTERNATIONAL, INC. |
Customer experience
IIAR
Dry Tools
In-app purchases
IIAR
No in-app purchases
Dry Tools
No in-app purchases
