Spark Water vs e
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- Water quality data collection
- Data management
- Analysis of test parameters
- Tracking of water quality
- Designed for professionals
- Supports water treatment facilities
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | Spark Water | e |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 2 | 3 — better |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 49 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | SPARK DIAGNOSTICS, LLC | e-sens, Inc. |
Customer experience
Spark Water
e
In-app purchases
Spark Water
No in-app purchases
e
No in-app purchases









