Comparison

Pool Chem Calculator vs Flex Controller

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

Head to head
About

Pool Chem Calculator

This app helps manage pool chemistry with 24 specialized calculators for dosing, pH, and more. It features a customizable maintenance calendar, equipment tracking, and easy report sharing for up to 100 pools. Ideal for maintaining a clean and swim-ready pool.

Highlights
  • 24 precision pool chemical calculators
  • Customizable maintenance calendar with notifications
  • Equipment tracking and management
  • Multi-user pool sharing
  • Professional report builder
  • Smart pool route mapping
Features
Read full description

Transform your pool maintenance routine with the most comprehensive pool management app on iOS. Whether you're a seasoned pool owner or just getting started, Pool Chemical Calculator puts professional-grade tools right in your pocket. Advanced Chemical Calculations Master your pool chemistry with 24 specialized calculators covering everything from chlorine dosing and pH adjustments to alkalinity balancing and shock treatments. Get precise measurements tailored to your pool size and current conditions. Track equipment, schedule maintenance with custom notifications, easy to share reports, track up to 100 pools and custom pool route maps. Key Features: 24 precision pool calculators for all chemical needs - Volume Calculator - Chlorine Calculator - Alkalinity Calculator - pH Calculator - Stabilizer Calculator - Salt Calculator - Borate Calculator - Heat Time Calculator - Turnover Rate Calculator - Filter Size Calculator - Fill Time Calculator - Flow Rate Calculator - Dynamic Head Calculator - Calcium Hardness Calculator - Saturation Index Calculator - Chlorine Neutralizer - Pool Operating Cost Calculator - Solar Heating ROI Calculator - Pool Cover Savings Calculator - Heat Cost Calculator - Evaporation Rate Calculator - Pool Leak Detection Calculator - Phosphate Removal Calculator - Algae Treatment Calculator Customizable maintenance calendar with smart notifications Smart pool route mapping Enhanced equipment tracking and management Intuitive drag-and-drop interface Advanced search and filtering options Multi-user pool sharing capabilities One-tap result sharing Comprehensive report builder Detailed user and pool profiles Smart Maintenance Scheduling Never miss another cleaning or equipment check with our intelligent calendar system. Set custom notifications for routine maintenance, equipment servicing, and warranty expirations. Stay ahead of problems before they start. Customize notifications to fit your pool. Streamlined Workflow Organize your tools exactly how you work with drag-and-drop calculator/pool ordering and custom filters. Find what you need instantly with enhanced search features that remember your preferences. Collaboration Made Easy Share pool access with family members, pool services, or property managers. Everyone stays informed with real-time updates and shared maintenance schedules. Professional Reporting Generate detailed reports combining multiple calculation results and maintenance records. Perfect for insurance claims, service documentation, or tracking long-term trends. Simple Pricing: Start free with your first pool and access all essential features. Upgrade to Premium for just $1.99/month to manage up to 100 pools, get cloud backup and go ad free - perfect for pool service professionals, property managers, or multi-pool owners. Keep your pool crystal clear and swim-ready all season long. Download Pool Chemical Calculator today and experience the difference professional-grade pool management makes. No account required to start balancing your pool. Pool Service Workspace Run your pool service business from one organized workspace. Schedule jobs, plan technician routes, manage customers and employees, track inventory, create estimates and invoices, document completed work, and review business performance. Technicians can clock in to share live location and route progress with their employer, including while the app is closed or not in use. Location tracking is user-initiated, remains visible through an ongoing notification, and stops automatically when the technician clocks out. Location data is used only for workforce route and job tracking—not advertising. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Flex Controller

Features
Read full description

This application is used for the setup and configuration of the Aquasol Flex Chemical Controller.

Screenshots

Pool Chem Calculator4 screens
Flex Controller4 screens

Verdict

The call

The clearest difference is in-app purchases: Flex Controller at none against Pool Chem Calculator's 1. Flex Controller also leads on ads (none vs shown). Pool Chem Calculator's advantage is update cadence (every 6 days vs every 13 months). On price, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Pool Chem Calculator sells 1 in-app purchase, starting at $1.99 per month. Flex Controller asks for nothing beyond the download.

UpkeepUpdate frequency

Pool Chem Calculator ships an update every 6 days, Flex Controller every 13 months. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 7 level
Pool Chem Calculator versus Flex Controller: the parameters behind the verdict, then further details
ParameterPool Chem CalculatorFlex Controller
PriceFreeFree
Rating4.3 (36 ratings) — better—
Positive reviews36.4% of reviews—
Number of ratings36 — better—
Update frequencyEvery 6 days — betterEvery 13 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.0 — better
Further details — not scored
Size113 MB31 MB
Age rating4+4+
DeveloperGunter Business Solutions IncPoolsure, a division of Aquasol Controllers, Inc.

In-app purchases

1 purchases

Pool Chem Calculator

Subscriptions1
  • 100 Pool Subscription$1.991 Month
None

Flex Controller

No in-app purchases

Questions

Is Pool Chem Calculator free?
Pool Chem Calculator is free to download, with in-app purchases available.
Is Flex Controller free?
Flex Controller is free to download, with no in-app purchases.
Do Pool Chem Calculator or Flex Controller have ads?
Pool Chem Calculator shows ads; Flex Controller does not.
Which is updated more often, Pool Chem Calculator or Flex Controller?
Pool Chem Calculator ships an update every 6 days, and Flex Controller every 13 months. Most recently, Pool Chem Calculator was updated on October 6, 2026 and Flex Controller on October 8, 2026.

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