Comparison

Study Guide Pro vs HVAC/R AI Pro

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

Head to head
About

Study Guide Pro

Create and review custom study guides for any subject. Organize questions and answers, randomize them for practice, and access your guides on your Apple Watch. Perfect for preparing for quizzes, tests, and certifications.

Highlights
  • Create custom study guides
  • Add questions and answers
  • Randomize question order
  • Create multiple guides
  • Edit existing entries
  • Apple Watch integration
Features
Read full description

Study Guide Pro helps you study for anything. From quizzes, tests, exams, certifications, etc. You just need to: * Give your study guide a name * Enter your questions and answers My Study Guide Po will help you review everything you entered into it. Study Guide Pro allows you to: * Randomize your question/answers * Create multiple study guides * Edit questions/answers as many times as you need to * Browse your study guides easily on your Apple Watch Please contact us using the support link below for any errors/bugs/feature requests.

About

HVAC/R AI Pro

This app provides HVAC and refrigeration technicians with AI-powered diagnostic assistance, duct sizing calculations, and job estimation tools. It offers step-by-step troubleshooting, airflow analysis, and photo-based equipment support to streamline service calls.

Highlights
  • AI Diagnostic Assistant
  • Step-by-step troubleshooting
  • Duct sizing calculations
  • Airflow analysis
  • Job estimate tool
  • Photo-based equipment support
  • Chat history
Features
Read full description

HVAC/R AI Pro is a practical field companion for HVAC and refrigeration technicians. Get help troubleshooting a stubborn system, checking airflow, reading equipment labels, or putting together an estimate—all in one place. Built by a field tech for field techs, it combines conversational AI with useful trade tools to help you work through the job in front of you. AI Help on the Job Describe what you’re seeing, share your readings, or add a photo to get help working through the problem. - Step-by-step troubleshooting and diagnostic checklists - Guidance on superheat, subcooling, static pressure, and airflow - Photo-based equipment and system support - Answers tailored to your technician experience level - Saved chats so you can pick up where you left off - For Pro users, AI can search your saved past chats for relevant information Equipment Scanner Spend less time typing information from a unit label. Take or choose a photo, review the detected equipment details, and bring them into Chat when you’re ready. - Capture model, serial, refrigerant, and electrical details - Review and edit the information before using it - Add equipment context to your conversation HVAC and Refrigeration Tools Keep everyday calculations close at hand. - Round and rectangular duct sizing - Static pressure and friction rate calculations - Refrigerant pressure-temperature reference - Walk-in refrigeration box-load calculations - Saved airflow jobs Repair and Replacement Estimates Build a starting point for your next estimate using job details, location, labor rate, and markup. Save estimates and return to them when you need them. Made for Your Workday Whether you’re learning the trade, diagnosing service calls, checking an installation, or planning repair work, HVAC/R AI Pro gives you a place to ask questions and keep useful job information together. Subscription Options Basic For lighter use, with monthly allowances for AI chat, image analysis, and estimates, plus saved chats, estimates, and airflow jobs. Pro For regular field use, with everything in Basic, higher usage allowances, and AI search across your saved past chats. Usage limits and fair-use terms apply. Available plans and pricing are shown in the app before purchase. Some features require a paid subscription. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Payment is charged to your Apple Account. Manage or cancel your subscription in your App Store account settings. AI can make mistakes. Always verify important information and follow manufacturer instructions, local codes, and proper safety procedures. Estimates and calculations are planning aids and require professional judgment. Privacy Policy: https://hvacrai.com/privacy Terms of Use: https://hvacrai.com/terms

Screenshots

Study Guide Pro4 screens
HVAC/R AI Pro4 screens

Verdict

The call

The clearest difference is price: HVAC/R AI Pro at Free against Study Guide Pro's $2.99. HVAC/R AI Pro also leads on rating (4.6 vs 4.0) and update cadence (every 5 weeks vs every 2 months). Study Guide Pro's advantage is in-app purchases (none vs 2) and device support (4 vs 2). On ratings volume, 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

HVAC/R AI Pro is free to download; Study Guide Pro costs $2.99 up front. HVAC/R AI Pro sells 2 in-app purchases, starting at $9.99 per month. Study Guide Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

HVAC/R AI Pro holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 2 and 5 respectively.

UpkeepUpdate frequency

Study Guide Pro ships an update every 2 months, HVAC/R AI Pro every 5 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard6 real differences · 4 level
Study Guide Pro versus HVAC/R AI Pro: the parameters behind the verdict, then further details
ParameterStudy Guide ProHVAC/R AI Pro
Price$2.99Free — better
Rating4.0 (2 ratings)4.6 (5 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings25 — better
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.6 — better16.4
Further details — not scored
Size2 MB94 MB
Age rating4+17+
DeveloperPablo AristaCowboy G Industries LLC

Customer experience

Study Guide Pro

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

HVAC/R AI Pro

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

In-app purchases

None

Study Guide Pro

No in-app purchases

2 purchases

HVAC/R AI Pro

Subscriptions2
  • Basic Plan$9.991 Month
  • Pro3 Days trial$19.991 Month

Questions

Is Study Guide Pro free?
Study Guide Pro costs $2.99, with no in-app purchases.
Is HVAC/R AI Pro free?
HVAC/R AI Pro is free to download, with in-app purchases available.
Which has better reviews, Study Guide Pro or HVAC/R AI Pro?
HVAC/R AI Pro is rated higher. Study Guide Pro averages 4.0 out of 5 from 2 ratings, while HVAC/R AI Pro averages 4.6 from 5 ratings.
Do Study Guide Pro or HVAC/R AI Pro have ads?
Neither Study Guide Pro nor HVAC/R AI Pro shows ads.
Which is updated more often, Study Guide Pro or HVAC/R AI Pro?
Study Guide Pro ships an update every 2 months, and HVAC/R AI Pro every 5 weeks. Most recently, Study Guide Pro was updated on November 1, 2026 and HVAC/R AI Pro on October 30, 2026.

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