PowerkVA vs CDL Prep
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PowerkVA
This app simplifies electrical transformer calculations using formulas and drawings. It offers standard transformer sizes and voltages with an intuitive interface for easy value selection.
- Electrical transformer computation
- Formulas and drawings
- Standard transformer sizes
- Standard voltages
- Simple value selection
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This application is designed to provide electrical transformer computation with the aid of formulas and drawings using standard transformer sizes and voltages. The layout is so simple, selecting values are easy as 123.
CDL Prep
Prepare for your Commercial Drivers License exams with a comprehensive question bank covering general knowledge and various endorsements. Practice with timed exams or instant feedback modes to identify areas for improvement.
- Over 500 practice questions
- Timed exam mode
- Endorsement topic exams
- Instant feedback in practice mode
- Randomized answer order
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CDL Prep is the best way to prepare for the Commercial Drivers License General Knowledge, and various endorsement exams. CDL Prep contains questions on the following topics: General Commercial, Air Brakes, Combinations, Hazmat, Passenger, Tanks, School Bus, and Doubles/Triples. Features: 1. Over 500 questions to practice with. 2. Exam Mode - 60 minutes to answer 50 randomly chosen questions, or 40 minutes to answer 20 to 30 questions on endorsement topics. At the end, review your score and any incorrect answers. 3. Practice Mode - Answer questions and receive instant feedback if you answered incorrectly. 4. Answer Randomization - Answers to questions will not always be in the same position. Please send any feedback or request to: CDLPrepApp@gmail.com. Thank you for reading, and good luck on your exams!
Screenshots
Verdict
The clearest difference is price: CDL Prep at Free against PowerkVA's $1.99. CDL Prep also leads on update cadence (every 2 months vs every 94 months) and ratings volume (6.7K vs 10). PowerkVA's advantage is ads (none vs shown) and review sentiment (100% vs 81%). On rating, in-app purchases, chart position 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
CDL Prep is free to download; PowerkVA costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.6 for PowerkVA against 4.7 for CDL Prep. That said, the two scores are not equally well evidenced: CDL Prep has 6.7K ratings behind it against 10, so its average is the more settled of the two. Written reviews are what separate them: 100% of PowerkVA's written reviews are positive against 81% of CDL Prep's.
PowerkVA ships an update every 94 months, CDL Prep every 2 months. The most recent releases landed on July 7, 2026 and September 29, 2026 respectively.
| Parameter | PowerkVA | CDL Prep |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.6 (10 ratings) | 4.7 (6.7K ratings) — better |
| Positive reviews | 100.0% of reviews — better | 80.7% of reviews |
| Number of ratings | 10 | 6.7K — better |
| Update frequency | Every 94 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Best chart rank | #180 | #76 — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 3 MB | 6 MB |
| Age rating | 17+ | 4+ |
| Developer | Manuel Olivera | Jeffrey Diaz |
Customer experience
PowerkVA
CDL Prep
Bugs and requests
PowerkVA
Not enough reviews yet to summarise bugs or requests.
CDL Prep
Reported bugs
2 issues- Back button issues
- Incorrect answers in app
Requested features
3 requests- Ad-free version
- Ability to report incorrect questions
- Include state-specific requirements
In-app purchases
PowerkVA
No in-app purchases
CDL Prep
No in-app purchases
Questions
Is PowerkVA free?
Is CDL Prep free?
Which has better reviews, PowerkVA or CDL Prep?
Do PowerkVA or CDL Prep have ads?
Which is updated more often, PowerkVA or CDL Prep?
Which is more popular, PowerkVA or CDL Prep?
Other comparisons
