Pool Operator: CPO Prep 2026
Chemical Balancer — Pass CPO
About
This app helps pool operators calculate precise chemical dosages for water balance and understand water chemistry. It also includes a daily operations log, turnover rate calculator, and extensive practice questions and mock exams for CPO certification.
What's New in Pool Operator
3.0
September 11, 2026
Pool Operator Prep 3.0 makes CPO certification preparation clearer and more complete: • Added annual Pro access alongside monthly and lifetime plans. • Improved chemical balancing, turnover calculations, and pool operation tools. • Refined study navigation, progress tracking, and exam simulator flow. • Trial messaging now respects Apple eligibility.
MoreSubscriptions & In-App Purchases
Pool Operator Pro Monthly
Full access to all features. Cancel anytime.
Developer apps
FAQ
What is the Pool Operator: CPO Prep 2026 app?
Pool Operator: CPO Prep 2026 is an educational tool designed to help pool operators master water chemistry, operations, and prepare for the Certified Pool Operator (CPO) exam. It offers features like chemical balancing, a daily log, and extensive practice questions.
How does Pool Operator: CPO Prep 2026 help with CPO certification?
The app provides over 700 practice questions covering all CPO exam topics, with detailed explanations and step-by-step math for calculation questions. It also includes a full mock exam to simulate the real test experience.
Can Pool Operator: CPO Prep 2026 calculate chemical dosages?
Yes, the app's chemical balancer takes your water test results (pH, chlorine, alkalinity, etc.) and pool size to tell you the exact amount of specific chemicals to add, eliminating guesswork and overdosing.
Does Pool Operator: CPO Prep 2026 have ads?
No, this application is ad-free, allowing for an uninterrupted learning and operational experience. The app is free to download with optional in-app purchases for Pro features.
What are the Pro features in Pool Operator: CPO Prep 2026?
The Pro version offers lifetime access to unlimited questions, the full chemical balancer, daily log with export, turnover calculator, mock exam, smart weak-area practice, and Pass Promise coverage. This is a one-time purchase, not a subscription.
How often is Pool Operator: CPO Prep 2026 updated?
The app was last updated on September 11, 2026, indicating a commitment to keeping the content current. The current version is 3.0.
What devices support Pool Operator: CPO Prep 2026?
Currently, the app is supported on iPhones. It is rated for ages 4 and up.
What is the Langelier Saturation Index (LSI) feature in the app?
The LSI feature helps determine if your pool water is balanced, corrosive, or prone to scaling. By entering your water test numbers, the app visually indicates the water's condition, with green for balanced and red for issues needing immediate attention.
