Pool Operator vs Pool Operator Prep

Know exactly how much chlorine to add. The Pool Chemical Balancer takes your current water test results — pH, free chlorine, alkalinity, cyanuric acid, calcium hardness — and tells you the exact amount of each chemical to add for your pool size. Liquid chlorine, cal-hypo, dichlor, trichlor, muriatic acid, soda ash, sodium bicarb. Exact ounces and pounds. No more guessing, no more overdosing, no more chasing chemistry all day. Langelier Saturation Index built in. Enter your numbers, see instantly if your water is balanced, corrosive, or scaling. Green means balanced. Red means fix it now. Turnover Rate Calculator shows how long your filtration system takes to cycle the entire pool volume. Input pool gallons and pump flow rate. See if you meet the 6-hour health code requirement or if you need to investigate flow issues. Daily Pool Operations Log replaces your paper logbook. Tap to enter water test results, bather load, chemicals added, weather conditions. History stored for 6 months — matching health department record retention requirements. Export to CSV for inspections. This is the tool you open every morning before the pool opens. 700+ practice questions covering everything on the CPO exam: water chemistry and balance (pH, chlorine, alkalinity, CYA, calcium hardness, LSI), disinfection and sanitization (breakpoint chlorination, shocking, fecal incident response), filtration systems (sand, DE, cartridge, backwashing), pool and spa calculations (volume, dosage, turnover, flow rate), health and safety regulations (record keeping, pool closures, bather load), mechanical systems (pumps, heaters, valves, skimmers), water quality testing (DPD vs OTO, testing frequency), facility operations (opening/closing, winterizing, emergency procedures), spa and hot tub operations (temperature limits, drain frequency, higher sanitizer levels), codes and standards (VGB Act, ADA, barrier requirements). Every question includes a detailed explanation. Calculation questions show step-by-step math so you learn the method, not just the answer. Full mock exam: 50 questions, 2-hour timer, open-book format matching the real CPO exam. Category-weighted. Pass/fail result with breakdown showing exactly which topics need more work. PRO — LIFETIME ACCESS: Unlimited questions, full chemical balancer, daily log with export, turnover calculator, mock exam, smart weak-area practice, Pass Promise coverage. No subscriptions. Download now. Pass your CPO certification the first time. Privacy Policy: https://www.voltexam.com/privacy Terms & Conditions: https://www.voltexam.com/terms Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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/