Pass your Section 608 certification exam. 1,600+ questions with smart practice, PT charts, and detailed explanations. Study offline, track progress, master every section.
Prepare for your Section 608 certification exam with the most comprehensive study app available. Whether you're going for Type I, Type II, Type III, or Universal certification, 608 Practice has everything you need to pass.
Hundreds of Practice Questions Study from a massive question bank covering all four exam sections: Core, Type I, Type II, and Type III. Every question has four answer options and a detailed explanation, just like the real exam. New questions are added regularly.
Pressure-Temperature Chart Questions Practice reading PT charts the way you will on the real exam. An interactive chart covering R-22, R-134a, R-410A, R-404A, and R-32 is built right into the questions. Calculate superheat, subcooling, identify refrigerants, and compare pressures across different refrigerants.
5 Study Modes Per Section
Cram Mode - Read through every question with the correct answer and explanation shown. Absorb the material before testing yourself.
Study - Answer questions at your own pace with instant feedback. Your position is saved so you can pick up where you left off.
Smart Practice - The app tracks what you get wrong and builds focused sessions around your weak spots. 75% of questions come from your weakest areas, 25% from material you haven't seen yet. Questions you master (3 correct in a row) are excluded so you spend time where it matters.
Mock Exam - Simulate the real exam with 25 random questions. 72% required to pass, just like the actual certification test. Review your answers with full explanations after each attempt.
Most Missed - See which questions you get wrong most often, organized by section. As you master questions, they leave the list automatically.
Track Your Progress
Study streak counter to keep you motivated
Per-section readiness scores
Mastery tracking for every question (3 correct answers in a row = mastered)
Best test scores by section
Full history of practice and test results
Study Reminders Set daily or weekly notifications to keep your study habit consistent. Choose your preferred time and frequency.
Works Offline All questions are stored on your device. Study anywhere, anytime, with no internet required. Questions sync automatically in the background when updates are available.
Built for the Real Exam
72% passing score, matching the actual Section 608 exam
25 questions per test, same as the certification
Four answer options per question, just like the real thing
Covers all current regulations including the AIM Act and 2026 rule changes
Privacy First No account required. No personal data collected. All your progress stays on your device.
I should start off the review by saying that the app is good in respects to what you can expect to see on the actual exam and should be used more as a supplement to actual studying (which I recommend skillcat), but I did note a few things that felt careless by the developers. For starters, I saw it had older and outdated questions that aren’t in modern versions of the section 608 exam. I’m not sure how the questions are gathered but they should be up to date with modern versions and exclude content from outdated versions of the exam this app is for. This aspect really fluffs the use of this app and provides unnecessary information and questions that gets in the way of studying for a modern version of the section 608 exams. Another thing I took note of was the app experience falling short in optimization, I was surprised to see there wasn’t an option to go back to previous questions on the practice tests. All in all, I did find this app useful to test my knowledge in preparation for the section 608 exams but felt held back by all the outdated content.
Good study questions, poorly optimized app
Coreywilson95
While the study questions are good, the app itself could use some help. It is not optimized to work with newer iPhones with the “dynamic island”… the back buttons barely work and need to tapped multiple times in different areas for it to be registered as a click. Some of the text is also hidden behind the “dynamic island” making it unreadable.
Perfect test prep
Squirrel Brained
Anyone looking for an edge on taking any level of the epa 608 needs this. I wasted money on the book, on study plans and my adhd just can’t lol. This honestly made the test a breeze, I aced it first time, thanks to this app. It’s simple which makes it perfect, easy to follow and if you get distracted easily like I do this is the app for you. The minimalistic look is what kept me from getting distracted.Use the study part to become familiarized with the questions on each section. And then use the practice tests as a way to hammer in the answers. Before you take your test, do a final practice test on each section individually. Doing that helped me, hope it helps someone else with a similar squirrel brain.
Worth every penny!!
J$W800
I purchased this app a few weeks ago. I went through every practice question and did all the practice tests 2-3 a week. Then, I Would read and review the ESCO literature and highlight all the familiar questions from the app. I ended up highlighting 90% of the book. The best part was that it wasn’t just yellow lines on a page, but the info was actually retained. I received 100% core, 100% type1, 92% type2, 92% type 3. The app had current information, and the exam questions were recognizable. It is Worth every penny!!!
Completely rebuilt from the ground up.
5 study modes per section: Cram, Study, Smart Practice, Mock Exam, and Most Missed
Smart Practice adapts to your weaknesses, weighting 75% of questions toward areas you struggle with. Mastered questions are excluded automatically.
Mock Exam matches the real test: 25 random questions, 72% to pass, no feedback until the end
Most Missed shows your most frequently wrong questions, sorted by miss count
Bookmark questions from any mode for quick review later
Interactive pressure-temperature reference chart with R-22, R-134a, R-410A, R-404A, and R-32
Per-section progress tracking with readiness scores, mastery counts, and best test scores
Full result history for every practice and test attempt
Study reminders with daily or weekly notifications
Swipe navigation between questions in all modes
Every question reviewed for accuracy and updated to current regulations
New questions sync automatically over the air
Works completely offline
Tablet and accessibility support
Dark mode support
Version 57
The developer, After Hours Data Systems LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
After Hours Data Systems LLC
Size
21.7 MB
Category
Education
Compatibility
Requires iOS 13.0 or later.
iPhone Requires iOS 13.0 or later.
iPad Requires iPadOS 13.0 or later.
iPod touch Requires iOS 13.0 or later.
Mac Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
