VoltExam vs SkillCat
Both help HVAC technicians pass the EPA 608 and licensing exams. SkillCat includes exam booking and a large user base. VoltExam covers 19 trades at a one-time price with built-in job-site calculators.
$17.99 one-time
Pay once, use forever. No account. Offline.
- ✓ Built-in refrigerant & trade calculators
- ✓ 20 certifications covered
- ✓ Full offline — no Wi-Fi needed
- ✓ No subscription, no account
$10/month
Subscription. HVAC + EPA 608 focus only.
- ✓ Includes exam scheduling
- ✓ 300K+ HVAC user community
- ✕ HVAC/EPA 608 only — no other trades
- ✕ Requires internet connection
SkillCat costs $360 over 3 years. VoltExam HVAC is $17.99 forever.
Once you pass your exam, SkillCat charges you every month to keep your study materials. VoltExam keeps the calculators active — useful on the job even after you're licensed.
Feature-by-Feature Comparison
| Feature | VoltExam | SkillCat |
|---|---|---|
| Pricing model | One-time purchase | Monthly subscription |
| Price | $17.99 forever | $10/month (~$120/year) |
| Access after stopping payment | ✓ Keep forever | ✕ Lose access immediately |
| Trades covered | 20 certifications | HVAC + EPA 608 focus |
| Exam booking | ✕ Practice only | ✓ Includes exam scheduling |
| Built-in trade calculators | ✓ Included (refrigerant charge, voltage drop, etc.) | ✕ Not included |
| Offline access | ✓ Full offline | Limited — requires internet |
| Account required | ✗ No account needed | ✓ Account required |
| Platform | iOS | iOS + Android + Web |
| Free web tools | ✓ 12 calculators at voltexam.com/tools | ✕ Not offered |
| Price per year (3 years) | $17.99 total | $360 total |
Certifications Covered
| Certification | VoltExam | SkillCat |
|---|---|---|
| HVAC (Journeyman / Master) | ✓ | ✓ |
| EPA 608 Refrigerant Handling | ✓ | ✓ |
| Electrician (Journeyman/Master) | ✓ | ✕ |
| Plumber (Journeyman) | ✓ | ✕ |
| CDL Hazmat Endorsement | ✓ | ✕ |
| Crane Operator (NCCCO) | ✓ | ✕ |
| EMT / NREMT | ✓ | ✕ |
| ServSafe Food Manager | ✓ | ✕ |
| FAA Part 107 Drone Pilot | ✓ | ✕ |
| Real Estate License | ✓ | ✕ |
| Security Guard | ✓ | ✕ |
| Forklift / OSHA | ✓ | ✕ |
| Sterile Processing (CRCST) | ✓ | ✕ |
Frequently Asked Questions
Is VoltExam cheaper than SkillCat?
Yes. VoltExam costs $17.99 one time. SkillCat costs $10/month — that's $120/year or $360 over 3 years. VoltExam costs $17.99 total, forever.
Does SkillCat have more HVAC content than VoltExam?
SkillCat is exclusively focused on HVAC and EPA 608, and includes exam booking. VoltExam's HVAC app has 1,000+ practice questions plus built-in job-site calculators like refrigerant charge and wire sizing. VoltExam does not include exam booking.
Does VoltExam work offline unlike SkillCat?
VoltExam works fully offline once downloaded. SkillCat requires an internet connection for most features. If you study in basements, on job sites, or areas with poor signal, VoltExam is the more practical choice.
I need prep for more than just HVAC — which should I use?
VoltExam covers 20 certifications — HVAC, electrician, plumbing, CDL hazmat, crane operator, EMT, real estate, and more. SkillCat focuses exclusively on HVAC and EPA 608. For multi-trade coverage, VoltExam is the clear choice at $17.99 per trade.
Skip the subscription. Own it.
VoltExam is $17.99 once — with built-in calculators that stay useful long after you pass the exam. No monthly charge, no account, full offline access.
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