bloomWatch vs Kor Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
bloomWatch
This app allows users to document and track the occurrence of freshwater algae blooms. Your submissions help scientists and public health officials monitor water quality and manage resources for recreation and potable water.
- Document algae bloom occurrences
- Track bloom location and frequency
- Contribute to water quality monitoring
- Support scientific research
- Report potentially harmful blooms
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Blooms are visibly abundant proliferations of freshwater algae and have the potential to cause risks to human and animal health. Their occurrence is presently not well documented. bloomWatch is an App that has been developed to track and document the occurrence of these potentially harmful algal blooms. Your input using this App will provide documentation as to the location and frequency of potentially harmful bloom events, helping scientists, water quality managers, and public health officials effectively track and manage the water resources that the public depends on for potable water and recreation.
Kor Mobile
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Kor offers a mobile interface for YSI’s industry-leading EXO Multiparameter Water Quality Sondes, providing powerful, real-time water quality monitoring capabilities in the palm of your hand. Connect to Kor Mobile on your iOS device using a KorLink Bluetooth adapter connected to an EXO sonde via a field cable to establish a Bluetooth connection to view and manage water quality data directly in the field. No internet connection required. Key Features: • Data Management – View recorded data and transfer or share data files in the field • Site Management – Organize and access data by location • Deployment Tools – Streamline setup and configuration in the field • Sensor Calibration – Perform calibrations directly from your phone • Instrument Settings – Adjust parameters and settings with ease • App Settings – Customize your experience
Screenshots
Verdict
bloomWatch and Kor Mobile are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 14, 2026 and September 18, 2026 respectively.
| Parameter | bloomWatch | Kor Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (12 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 4 months | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 14.5 |
| Further details — not scored | ||
| Size | 216 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | United States Environmental Protection Agency (USEPA) | Xylem Inc. |
In-app purchases
bloomWatch
No in-app purchases
Kor Mobile
No in-app purchases








