MedLocker vs EPA 609 Certification Prep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MedLocker
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The App software provides multiple functions for the MedLocker Camera. A video and photographic record of who opens the MedLocker and also sends a notification to the administrator(s) that the MedLocker has been opened. This protects the MedLocker from theft by providing a record of who opens the Locker. In case of an emergency, the video and photographic record also provides the identity as to who takes the medication out of the MedLocker. The video and photographic records are transmitted over a wifi system. In the case where there is no wifi system available, there is a backup system using an SD memory stick that contains the video and photographic record.
EPA 609 Certification Prep
Prepare for your EPA Section 609 MVAC certification with focused practice questions, clear explanations, and an offline reference library. Master regulations, refrigerant identification, and safety protocols for the motor-vehicle air-conditioning exam.
- Practice mode with 50 multiple-choice questions
- Explanations and citations for every answer
- Mock exams mirroring the real certification test
- Offline reference library for refrigerants and regulations
- Diagnostic pass/fail analysis against EPA cutoff
- One-time unlock for Pro content
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Preparing for your EPA Section 609 MVAC certification? EPA 609 Certification Prep gives you focused practice for the 25-question, open-book motor-vehicle air-conditioning exam — with clear explanations, CFR and SAE citations, and an offline reference library built for the shop. WHAT'S INCLUDED: Practice Mode - 50 multiple-choice questions covering Section 609 regulations, refrigerant identification, recovery equipment, leak detection, evacuation, retrofits, and hybrid / EV high-voltage safety. - Every answer paired with an explanation and a regulation or SAE citation (40 CFR Part 82 Subpart B, SAE J2788 / J2843 / J2851, and more). - Drill Core 609 topics or MVAC topics separately, or sweep across the whole bank. Mock Exams - Mock 1 — 25 questions, open-book format matching the real Section 609 exam. - Mock 2 — advanced MVAC scenarios: R-1234yf A2L handling, POE oil on hybrid compressors, retrofit compliance, evacuation to 500 microns. - Question overview grid + flag-for-review during the exam. - Section-by-section pass / fail diagnostic against the 84% EPA cutoff. Reference Library (always free) - Refrigerants: R-12, R-134a, R-1234yf, R-744, R-152a — with ODP, GWP, ASHRAE safety class, and service-port quick-reference. - Regulations: Section 609, Clean Air Act, Montreal Protocol, SNAP program, AIM Act. - Recovery Equipment: SAE J2788 / J2810 / J2843 / J2851 / J2845 standards plus the full MVAC service sequence. - Leak Detection: SAE J2791 / J2913 detector standards, common MVAC leak points, repair philosophy. - Safety: refrigerant exposure limits, A2L / A2 flammability, hybrid / EV high-voltage service, PPE, first aid. WHO IS IT FOR: - Automotive technicians preparing for Section 609 MVAC certification - Dealership service advisors needing refrigerant-handling authority - Vocational students and automotive-trade instructors - Independent mechanics servicing R-134a and R-1234yf systems WHY TECHS LOVE IT: - Fully offline — works in the shop, on the lot, or at a roadside service. - No ads, no tracking, no subscription traps. - Real citations on every answer so you can verify the source. - Completely free — every question, both mock exams, and the full reference library. No purchase, no account. - Clean UI designed for one-handed use on a phone next to the car. 100% FREE: Every practice question, both mock exams, and the full reference library are completely free — no in-app purchases, no subscription, no ads, no account. Practice questions are modeled on the Section 609 certification exam and the public 40 CFR Part 82 Subpart B regulations. This app is a study aid; certification is awarded by an EPA-approved 609 test administrator. Download EPA 609 Certification Prep and master the MVAC exam in your pocket.
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Verdict
The clearest difference is in-app purchases: MedLocker at none against EPA 609 Certification Prep's 1. MedLocker also leads on iOS requirement (11.0 vs 17.0). On price, ads and device support 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. EPA 609 Certification Prep sells 1 one-off in-app purchase. MedLocker asks for nothing beyond the download.
| Parameter | MedLocker | EPA 609 Certification Prep |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | — | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 172 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Belay | Shanghai Sheyuan Network Technology Co., Ltd. |
In-app purchases
MedLocker
No in-app purchases
EPA 609 Certification Prep
- Unlock Full Certification Prep$9.99





