# 608 Practice — Prepare for your Certification

> EPA 608 certification exam preparation with practice and test modes. (iPhone/iPad app by After Hours Data Systems LLC.)

- Source: https://appshunter.io/ios/app/608-practice/id1422450628 (this page in markdown: same URL + `.md`)
- Developer: [After Hours Data Systems LLC](https://appshunter.io/developer/573215695)
- Category: Education
- Price: $12.99
- Rating: 3.90/5 from 118 App Store ratings · 64 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 28 MB
- Languages: American English
- Released: 2018-08-13
- Data updated: 2026-09-03
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/608-practice/id1422450628/reviews.md

## What is 608 Practice?

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.

## Key features

- Hundreds of practice questions
- Up-to-date content (2018-2020)
- Core, Type I, II, III exam sections
- Practice mode
- Timed test mode
- Review missed questions

## Chart rankings

- #17 in Top Paid · Education (US App Store)

## What do users think of 608 Practice?

Overall sentiment: mixed

**Pros**

- 💯 Questions similar to test
- ✅ Helped pass exam
- 👍 Great study tool
- 💰 Worth the price
- 📚 Comprehensive content
- 🎯 Accurate practice tests
- 💡 Useful for focused study
- 💯 High scores achieved
- 📱 Great mobility
- 🌟 Highly recommended

**Cons**

- 🐛 Outdated questions
- 🐛 App bugs and glitches
- 🐛 Poor optimization
- 🐛 Incorrect answers provided
- 🐛 Unstable performance
- 🐛 Screen rotation issues
- 🐛 Dynamic Island compatibility
- 🐛 Unclear explanations
- 🐛 Questions not on real test
- 🐛 Counter-productive updates

**Commonly reported bugs**

- App crashes
- App freezes
- Screen rotation causes app to stop working
- Answers marked incorrectly
- App not working with iOS 13
- Cannot see or scroll to bottom of app
- Questions and answers show as undefined
- Answers change after moving to next question
- Cannot go back during tests
- Review portion of tests not fully visible

**Most requested features**

- Restore old version
- Allow viewing all questions
- Add mode for fewer questions
- Shuffle questions option
- Bookmark questions
- Landscape mode for iPads
- Explain wrong answers
- Update for new regulations
- Mark study progress

## Recent user reviews (10 of 64)

All indexed reviews: https://appshunter.io/ios/app/608-practice/id1422450628/reviews.md

### 5/5 — Best 608 test.

*2026-08-02*

I used this to study for my 608 test. The questions and the answers are word for word what I seen on the test. I used this for about two weeks before taking my test and got it on the first try. I also do not leave reviews often. But I felt that this one deserved it.

### 5/5 — Yes

*2026-06-08, version 64*

Great practice test yes the questions are repetitive but gives you same perspective as what your gonna see on the test

### 5/5 — As good as it gets

*2026-06-04*

Obviously any app is gonna have its issues. Yes a couple of the thousand questions are outdated but it still gives you all the information you would need previous to taking the epa 608 exam. The app has multiple different options and levels for review and helps you out when there’s certain questions you have a lot of trouble with.

### 1/5 — Not conducive

*2026-04-09, version 57*

The way the app was allowed for me to see the whole bank and retest as necessary the new bank is 3x as long and doesn’t allow me to view all questions once …. The update is counter productive.

### 1/5 — Restore the old version

*2026-04-09, version 57*

Now there’s more questions that not appear in the real test

### 1/5 — Bad timing for a change

*2026-04-08, version 57*

I think y’all should ho back to the original way it looked with CORE having only 224 questions there to many questions in the way or make a mode for only the 224 plz and thank you

### 3/5 — Outdated

*2026-02-28, version 50*

Some of the questions are outdated. The use of CFC R-13 and R-503 are no longer used . So if this type of question is in the exam this will confuse anyone.

### 5/5 — Worth it!

*2025-12-17*

Questions were almost identical to the actual, aside from the app being a little outdated in terms of design and functionality. It is great and worth the $10

### 5/5 — Solid app

*2025-11-12, version 50*

If you want to pass the test review this passed it first time

### 1/5 — App is poorly designed

*2025-10-15, version 50*

I have been trying to study for this test and everytime I move my phone ends up rotating the screen causing the entire app to stop working and be in disarray allowing me to never finish a full test knowing what I missed

## Frequently asked questions about 608 Practice

### What does the EPA 608 Practice app do?

This app provides a comprehensive study tool for individuals preparing for the EPA 608 certification exam. It features hundreds of practice questions covering the Core, Type I, Type II, and Type III sections of the test, designed to help users review and prepare effectively.

### What are the key features of the EPA 608 Practice app?

The app includes a vast collection of up-to-date practice questions, covering all required exam sections. It offers a practice mode for flexible study and a timed test mode that simulates the actual exam experience, complete with a review of missed questions.

### Is the EPA 608 Practice app free to use?

Yes, the application is available for free. There are no in-app purchases or advertisements mentioned, suggesting a completely free experience for users studying for their EPA 608 certification.

### What topics are covered in the EPA 608 Practice app?

The app covers a wide range of topics essential for EPA 608 certification. This includes ozone depletion, Clean Air Act regulations, substitute refrigerants, refrigeration techniques, recovery procedures, safety protocols, and shipping regulations, across all four certification types.

### Who is the target audience for this app?

The app is designed for HVAC technicians and other professionals who need to obtain or renew their EPA 608 certification. This certification is required for anyone who handles, services, or disposes of refrigerants.

## Version history (last 5 releases)

### 65 — 2026-08-17

• 80 new questions on the AIM Act, A2L refrigerants, and 2025-2026 rules
• Each section shows how many questions are due for review
• Restoring a backup is safe: a bad file is rejected, not applied
• Fixed crashes in Cram mode and when resuming Smart Practice
• Stats update as soon as you finish studying
• Most Missed lists every missed question, not just 50
• Easier-to-read text at every text size

### 64 — 2026-04-17

• App now available in Spanish (Latin American): full UI and the entire question bank translated
• Language toggle in About; follows your device language by default
• Search works in both English and Spanish
• New bookmark filter in Cram and Study, so you can review just your flagged questions
• Backup & Restore in About: save or load your progress from a file

### 62 — 2026-04-11

• Trimmed repetitive PT chart lookup questions and shuffled the remaining ones for better variety in Cram mode
• Under the hood: PT chart is now data-driven, so future chart updates no longer require an app release

### 60 — 2026-04-10

Spaced repetition in Smart Practice - questions are now scheduled using the SM-2 algorithm. Questions you get wrong come back quickly, questions you know well are spaced further apart. Much more effective for long-term retention.
Search - find any question by keyword from the home screen. Search across question text, answer options, and explanations.
Progress charts - visual score trends over time per section with a 72% passing threshold line. Toggle between all sessions and tests only. Category breakdown with average scores.
Question content fixes and improved explanations across the question bank.
Stability improvements to the question sync and data handling.

### 57 — 2026-04-08

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

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*