Comparison

US Driving Test Prep vs Pool Operator Prep

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

US Driving Test Prep

Read full description

US Driving Test Prep helps California Class C, New York Class D and New Jersey Class D learners understand written-test rules with clear explanations and bilingual study support. Each state includes 50 free questions. A separate one-time purchase unlocks 300 more questions for that state's complete 350-question bank. Buying one state does not unlock any other state. These purchases are not subscriptions, and each price is shown by the App Store before purchase. Features: - Practice all available questions or focus on unanswered questions - Topic Practice - California 36- and 46-question mock exams - New York 20-question mock exams using the 14/20 overall and 2/4 road-sign passing rules - New Jersey 50-question mock exams with a 40/50 passing rule - Original road-sign illustrations - Wrong-answer review and bookmarks - Local progress tracking - English and Simplified Chinese + English study modes - Offline-first bundled study content - Restore Purchases from the full-question-bank screen No account is required. The app has no backend, ads, tracking, or analytics, and study progress stays on your device. Practice content is based on official California, New York and New Jersey driver handbook concepts and rewritten for learning. The app is not affiliated with, endorsed by, or sponsored by any DMV, MVC, state agency, or government agency. It does not contain official government exam questions.

About

Pool Operator Prep

Features
Read full description

Walk into your pool operator certification exam ready. Pool Operator Prep gives you 1,012 practice questions with a clear explanation for every single answer, so you don't just memorize the right choice - you understand the water chemistry and safety behind it. Built for candidates preparing for the CPO (Certified Pool/Spa Operator) and AFO (Aquatic Facility Operator) exams. WHY IT WORKS Passing isn't about cramming. It's about repeated, targeted practice across every area the exam tests - then reinforcing exactly what you got wrong until it sticks. - 1,012 questions written to match the real exams' style and difficulty - An explanation on every answer, so each question teaches you something - Full coverage: Water Chemistry & Balance - Disinfection & Chlorination - Filtration & Circulation - Pool & Spa Math - Chemical Feed & Testing - Recreational Water Illness - Regulations & Codes - Facility Operation & Safety - Troubleshooting STUDY YOUR WAY - Daily Plan that sizes itself to your exam date and keeps you on pace - Quick 10 for a fast review between shifts - Timed Mode to build exam-day speed and stamina - Smart Review using spaced repetition to resurface weak spots - Full-Length Mock Exam that simulates the real thing - Missed Questions queue so nothing slips through - Custom Quiz to drill any topic on demand TRACK YOUR PROGRESS - Pass probability that updates as you practice - Accuracy broken down by topic - Streaks to keep you consistent - Exam countdown WHO IT'S FOR Pool and aquatic facility operators preparing for the CPO or AFO certification exam. START TODAY Your exam date isn't moving. Start a free trial, take your first Quick 10 today, and watch your pass probability climb. --- SUBSCRIPTION DETAILS Full access is available through an auto-renewing subscription: - Weekly: $5.99 - Monthly: $14.99 A free trial is available for new subscribers. Payment will be charged to your Apple ID account at confirmation of purchase. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. Terms of Use: https://hermesdigitalbr-spec.github.io/pool-legal/terms.html Privacy Policy: https://hermesdigitalbr-spec.github.io/pool-legal/privacy.html Terms of Use (EULA): https://www.apple.com/legal/itunes/appstore/dev/stdeula/

Screenshots

US Driving Test Prep4 screens
Pool Operator Prep4 screens

Verdict

The call

US Driving Test Prep and Pool Operator Prep are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. US Driving Test Prep sells 1 one-off in-app purchase and Pool Operator Prep sells 2 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

US Driving Test Prep ships an update monthly, Pool Operator Prep every 3 weeks. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.

ScorecardNo meaningful differences
US Driving Test Prep versus Pool Operator Prep: the parameters behind the verdict, then further details
ParameterUS Driving Test PrepPool Operator Prep
PriceFreeFree
Update frequencyMonthlyEvery 3 weeks โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS17.017.0
Further details โ€” not scored
Size7 MB3 MB
Age rating4+4+
Developerๆตšๅ“ฒ ๅฝญHermes Inteligencia Digital Ltda

In-app purchases

1 purchases

US Driving Test Prep

One-time1
  • California Full Question Bank$4.99
2 purchases

Pool Operator Prep

Subscriptions2
  • Pool Operator Prep Weekly$5.997 Days
  • Pool Operator Prep Monthly3 Days trial$14.991 Month

Questions

Is US Driving Test Prep free?
US Driving Test Prep is free to download, with in-app purchases available.
Is Pool Operator Prep free?
Pool Operator Prep is free to download, with in-app purchases available.
Do US Driving Test Prep or Pool Operator Prep have ads?
Neither US Driving Test Prep nor Pool Operator Prep shows ads.
Which is updated more often, US Driving Test Prep or Pool Operator Prep?
US Driving Test Prep ships an update monthly, and Pool Operator Prep every 3 weeks. Most recently, US Driving Test Prep was updated on October 10, 2026 and Pool Operator Prep on October 12, 2026.

Other comparisons