Comparison

Spark Water vs Pooli

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

Head to head
About

Spark Water

This app automatically reads water test strips using your smartphone camera, providing immediate and accurate results for pool and spa water chemistry. It helps you monitor trends and interpret results easily, ensuring optimal water balance without complex visual charts.

Highlights
  • Automatic test strip reading via camera
  • Immediate and accurate results
  • Trend monitoring with historical data
  • Simple color-coded result interpretation
  • Supports pool and spa water parameters
Features
Read full description

Spark Water Test Strip Reader app is designed to work seamlessly to read Spark Diagnostics’s Water test products. This easy-to-use smartphone app for Spark Diagnostics Water test strip such as W-5P for Pool and Spa, automatically reads the test strip and delivers hassle-free, immediate, and accurate results in 30 seconds in your phone screen without having to interpret complex visual color chart. Note: App requires use of Spark Diagnostics’s W-5P and similar test strips products. The app features automatic reading of the Spark Diagnostics test strips by using your camera from the app or previously taken photos of test strip to give automatic reading. Spark Diagnostics Water test products measures Pool or Spa Water test parameter such as Free Chlorine, Hardness, Alkalinity, pH and more for maintaining healthy Pool & Spa water chemistry for optimum experience. APP FEATURES: FAST, FREE, AND CONVENIENT SMARTPHONE APP READING – easy-to-use smartphone test system app automatically reads the test strip and delivers hassle-free, immediate, and accurate results in your phone screen. TREND MONITORING: save test results in App to build historical trends. Save your spa and pool water test results to build historical trends that helps to improve consistency in maintaining your spa or pool chemical balance. SIMPLE RESULT INTERPRETATION: use the simple color indicators that guides you if the test results are low (light gray), in-required-range (green), borderline high (yellow) or high (red). Note: Instructions on the product package take precedence over the recommendations made by the app. In the event of unexpected or questionable results by App follow instructions from product package inserts.

About

Pooli

This app helps you maintain a clean and safe pool or spa with smart testing, tailored advice, and customized task lists. It offers advanced AI for instant feedback, problem resolution guidance, and comprehensive sanitization support. Track multiple pools, manage inventory, and even collaborate with others for effortless pool care.

Highlights
  • Smart water testing with manual entry or strip scanning
  • Interactive Calcite Saturation Index (CSI) tool
  • Tailored reports and expert maintenance advice
  • Advanced AI for instant pool questions
  • Customized task lists and reminders
  • Multi-pool and spa management
  • Chemical inventory tracking with restock reminders
Features
Read full description

Embark on your pool care journey with Pooli, the comprehensive, user-friendly app that transforms every user into a pool care expert. With a range of high-value features, Pooli ensures safe, clean, and enjoyable swimming all year round. Top Features: 1. Smart Testing: Use your favorite water test method and open the Pooli app. Manually enter the results or join the Pool Club to scan your test strip with your phone's camera. 2. Interactive CSI Tool: Utilize our interactive Calcite Saturation Index (CSI) tool for understanding and preventing potential issues. 3. Tailored Reports & Advice: Receive detailed pool water quality reports and expert maintenance advice catered to your pool size and type. 4. Advanced AI: Get instant feedback on your pool questions with our cutting-edge AI system. 5. Customized Task Lists: Enjoy tailored task lists, reminders, and user-defined water chemistry targets specific to your pool or spa needs. 6. Multi-Pool Management: Effortlessly track and manage multiple pools or spas. 7. Problem Resolution: Get guidance for identifying and resolving pool issues. 8. Comprehensive Sanitization Support: Support for all primary sanitization methods, complete with custom targets, dosages, and recommendations. 9. Analysis Tools: Use our tools to graph and analyze chemical levels and usage over time, calculate actual chemical demand, and optimize shock/sanitization schedules. 10. Chemical Atlas & Shop: Access our integrated atlas of chemicals and solutions, along with a shop for discounted testing and equipment. 11. Collaborative Tools: Team up with service providers or family members on pool maintenance. 12. Record Keeping: Maintain complete records of pool water tests and maintenance tasks and equipment readings. 13. Inventory Tracking and Sharing: Keep track of your chemical, equipment, and supply inventory with restock reminders. 14. Customizable Profiles: Share your pool and spa information through customizable user profiles. 15. Cost Calculators: Track your savings on chemicals and equipment, and monitor water consumption and potential leaks. 16. Gamified Experience: Have fun with pool care through our monthly high scores and achievement badges. 17. Offline Functionality: Access key features and information even without an internet connection. How Pooli Works: Using Pooli is as easy as a few taps on your screen. Simply open the app, use a test your pool water, and input the results manually or via Pooli's simple and accurate test strip scanning technology. Pooli then provides you with a detailed report and expert advice on maintaining your pool. You'll get customized task lists and reminders based on your pool's specific needs. Pooli even offers a collaborative feature to work with service providers or family members on pool maintenance. With Pooli, pool care becomes a breeze! Experience peace of mind knowing you're maintaining safe and clean water. Dive into a better pool care experience with Pooli today!

Screenshots

Spark Water4 screens
Pooli4 screens

Verdict

The call

The clearest difference is rating: Pooli at 4.6 against Spark Water's 3.0. Pooli also leads on review sentiment (87% vs 50%) and update cadence (every 2 weeks vs every 5 months). Spark Water's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (10.1 vs 15.5). On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Pooli holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: Pooli has 369 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of Spark Water's written reviews are positive against 87% of Pooli's.

UpkeepUpdate frequency

Spark Water ships an update every 5 months, Pooli every 2 weeks. The most recent releases landed on June 1, 2026 and September 20, 2026 respectively.

Scorecard6 real differences · 4 level
Spark Water versus Pooli: the parameters behind the verdict, then further details
ParameterSpark WaterPooli
PriceFreeFree
Rating3.0 (2 ratings)4.6 (369 ratings) — better
Positive reviews50.0% of reviews86.7% of reviews — better
Number of ratings2369 — better
Update frequencyEvery 5 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.1 — better15.5
Further details — not scored
Size49 MB122 MB
Age rating4+4+
DeveloperSpark Diagnostics LLCPooli, Inc.

Customer experience

Spark Water

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

Pooli

All ratings369 ratings
Positive90.2%
Neutral3.0%
Negative6.8%
Written reviews150 reviews
Positive86.7%
Neutral3.3%
Negative10.0%

Bugs and requests

Spark Water

Not enough reviews yet to summarise bugs or requests.

Pooli

Reported bugs

2 issues
  • Inventory management issues
  • Reminders triggering at inconvenient times

Requested features

4 requests
  • Ability to add equipment details and service history
  • Integration with calendar apps for reminders
  • More customization options for ideal water levels
  • Improved test strip scanning accuracy

In-app purchases

None

Spark Water

No in-app purchases

None

Pooli

No in-app purchases

Questions

Is Spark Water free?
Spark Water is free to download, with no in-app purchases.
Is Pooli free?
Pooli is free to download, with no in-app purchases.
Which has better reviews, Spark Water or Pooli?
Pooli is rated higher. Spark Water averages 3.0 out of 5 from 2 ratings, while Pooli averages 4.6 from 369 ratings.
Do Spark Water or Pooli have ads?
Neither Spark Water nor Pooli shows ads.
Which is updated more often, Spark Water or Pooli?
Spark Water ships an update every 5 months, and Pooli every 2 weeks. Most recently, Spark Water was updated on June 1, 2026 and Pooli on September 20, 2026.

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