Comparison

Spark Water vs e

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

e

This tool allows water quality professionals to collect, manage, analyze, and track water quality test parameters. It is designed for water treatment facilities and professionals in the field.

Highlights
  • Water quality data collection
  • Data management
  • Analysis of test parameters
  • Tracking of water quality
  • Designed for professionals
  • Supports water treatment facilities
Features
Read full description

The e-sens ROAM app is a free water quality collection tool to gather, manage, analyze and track all your water quality test parameters. Built for Water quality professionals and water treatment facilities.

Screenshots

Spark Water4 screens
e4 screens

Verdict

The call

The clearest difference is rating: e at 5.0 against Spark Water's 3.0. e also leads on update cadence (every 2 months vs every 5 months). Spark Water's advantage is monetization model (free vs ad-supported) and iOS requirement (10.1 vs 15.6). On price, ratings volume, ads and in-app purchases 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

e holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

UpkeepUpdate frequency

Spark Water ships an update every 5 months, e every 2 months. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 6 level
Spark Water versus e: the parameters behind the verdict, then further details
ParameterSpark Watere
PriceFreeFree
Rating3.0 (2 ratings)5.0 (3 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings23 — better
Update frequencyEvery 5 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.1 — better15.6
Further details — not scored
Size49 MB32 MB
Age rating4+4+
DeveloperSPARK DIAGNOSTICS, LLCe-sens, Inc.

Customer experience

Spark Water

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

e

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Spark Water

No in-app purchases

None

e

No in-app purchases

Questions

Is Spark Water free?
Spark Water is free to download, with no in-app purchases.
Is e free?
e is free to download, with no in-app purchases.
Which has better reviews, Spark Water or e?
e is rated higher. Spark Water averages 3.0 out of 5 from 2 ratings, while e averages 5.0 from 3 ratings.
Do Spark Water or e have ads?
Neither Spark Water nor e shows ads.
Which is updated more often, Spark Water or e?
Spark Water ships an update every 5 months, and e every 2 months. Most recently, Spark Water was updated on October 3, 2026 and e on October 6, 2026.

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