bloomWatch vs VuSitu
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.
VuSitu
Easily connect to water monitoring instruments to view, manage, and share water quality and quantity data. Configure, calibrate, and deploy instruments, view live readings, and set up logs. Securely store and share data through a cloud-based account.
- Connect to In-Situ instruments
- View live water quality data
- Configure and calibrate instruments
- Create and manage log files
- Secure cloud data storage
- Share data via HydroVu
- Instant graphing for readings
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Connect the VuSitu mobile app to In-Situ Inc. water monitoring instruments and telemetry to easily view, manage and share water quality and quantity data. Use any Bluetooth-enabled mobile device to configure, calibrate and deploy your instruments, view live readings, and set up logs. Log in to your HydroVu account for secure data storage and sharing. A user-friendly walkthrough makes it easy to set up log files of all types, even with delayed starts or offset entry. View real-time data on multiple water quality parameters, run low-flow sampling events from your phone, and quickly share your data with colleagues via HydroVu. The VuSitu mobile app makes it easy to: • Interface with In-Situ Inc. instruments • Configure VuLink telemetry devices • Gather real-time water quality and water level data • Create logs and manage log data for all supported instruments • Open data files in Excel or parse into other systems • Securely store all data files in the cloud • Calibrate your instruments • Use instant graphing to determine when to start and stop readings • Receive firmware updates for connected instruments and communication devices with embedded automatic updates or custom downloaded files • View data for conductivity, optical dissolved oxygen (DO), ORP, pH, turbidity, water level/pressure, temperature, ammonium, nitrate, chloride sensors, chlorophyll a, phycocyanin (BGA-PC), phycoerythrin (BGA-PE), FDOM, crude oil, rhodamine WT, fluorescein WT • Define geographic locations with GPS coordinates and photos • Select measurement units • Run low-flow sampling events with your Aqua TROLL 400/500/600 using managed workflows on your phone VuSitu is currently available for the Level TROLL®, Rugged TROLL®, Aqua TROLL®, MPX4, VuLink®, RDO® Blue, and RDO® handheld instruments, for surface water, groundwater, coastal, wastewater, drinking water and aquaculture applications.
Screenshots
Verdict
The clearest difference is review sentiment: VuSitu at 100% against bloomWatch's 0%. VuSitu also leads on rating (4.9 vs 3.6) and update cadence (every 6 weeks vs every 4 months). bloomWatch's advantage is iOS requirement (13.0 vs 15.0). 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.
VuSitu holds the better App Store score, 4.9 against 3.6. Both are backed by a comparable volume of ratings — 12 and 16 respectively. Written reviews point the same way: 0% of bloomWatch's written reviews are positive against 100% of VuSitu's.
bloomWatch ships an update every 4 months, VuSitu every 6 weeks. The most recent releases landed on September 10, 2026 and August 21, 2026 respectively.
| Parameter | bloomWatch | VuSitu |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (12 ratings) | 4.9 (16 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 12 | 16 — better |
| Update frequency | Every 4 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 216 MB | 170 MB |
| Age rating | 4+ | 4+ |
| Developer | United States Environmental Protection Agency (USEPA) | In-Situ Inc. |
Customer experience
bloomWatch
VuSitu
In-app purchases
bloomWatch
No in-app purchases
VuSitu
No in-app purchases









