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  1. v64iOS
    • 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
  2. v62iOS
    • 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
  3. v60iOS
    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.
  4. v57iOS
    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
  5. v1.0.0Android
  6. v50iOS
    made answers tappable, instead of just the checkbox
    added option to retake the same practice test
  7. v47iOS
    framework updates. corrected a few answers that were wrong. fixed some incorrect grammar. reworked the coding behind practice test reviews.
  8. v43iOS
    minor optimizations
  9. v42iOS
    add landscape mode
  10. v41iOS
    Fixed incorrect answer
  11. v40iOS
    Fixed a typo
  12. v39iOS
    fix incorrect answer
  13. v38iOS
    Fixed incorrect answer
  14. v28iOS
    Implemented feature suggested by HfLyou to continue where you left off in the study section.
  15. v27iOS
    UI Tweaks
  16. v26iOS
    fix bug in review section
  17. v25iOS
    fix crashing on XS and XR phones
  18. v24iOS
    iOS 13 compatibility
  19. v22iOS
    moved from switches to checkboxes
  20. v19.5iOS
    Data is now all local.  Fixed some bugs with navigation between screens.  Enhanced the practice test review.  Added a help screen.
  21. v17.1iOS
    import data on first run, instead of at each section
  22. v8.1iOS
    added a "Show Answer" button in the study mode, per user request.
  23. v6.1iOS
    removed unused 10MB pdf for smaller app size
  24. v4.0iOS
    fixed a loop that was duplicating practice test questions

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by 608 Practice, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

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