Comparison

bloomWatch vs EDDMapS

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

Head to head
About

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.

Highlights
  • Document algae bloom occurrences
  • Track bloom location and frequency
  • Contribute to water quality monitoring
  • Support scientific research
  • Report potentially harmful blooms
Features
Read full description

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.

About

EDDMapS

Document and map the distribution of invasive species with this user-friendly system. It allows for easy data submission, visualization, and querying, aiding in early detection and rapid response efforts. All data is reviewed by experts for accuracy.

Highlights
  • Document invasive species distribution
  • User-friendly mapping system
  • Data submission and querying
  • Interactive maps
  • Expert data verification
  • Early Detection and Rapid Response support
Features
Read full description

EDDMapS is a mapping system for documenting invasive species distribution. It is fast, easy to use, and doesn't require Geographic Information Systems experience. Launched in 2005 by the Center for Invasive Species and Ecosystem Health at the University of Georgia, it was originally designed as a tool for state Exotic Pest Plant Councils to develop more complete distribution data of invasive species. EDDMapS goal is to maximize the effectiveness and accessibility of the immense numbers of invasive species observations recorded each year. Why do we care? An invasive species is when a nonnative species causes or is likely to cause economic, environmental harm, or harm to human health. Invasive species negatively impact agriculture, recreation, natural ecosystems, biodiversity, and more. The first step is prevention of nonnative introduction. The second step is to map where the invasive species are found in the introduced area. How does it work? EDDMapS is a platform to document, display, and query the presence of invasive species. A simple, interactive Web interface engages participants to submit their observations or view results through interactive queries into the EDDMapS database. EDDMapS encourages users to participate by providing Internet tools that maintain their personal records and enable them to visualize data with interactive maps. Users simply enter information from their observations into the standardized reporting form, which allows specific information about the infestation and images to be added. Uploaded data entered is immediately loaded to the database for verification. Once data is reviewed as correct by an expert, it is available for viewing and download. Being able to see the current data of a species as it moves into a new area helps to facilitate Early Detection and Rapid Response programs (EDRR). EDRR programs help stop or control an invasive species before it becomes an unmanageable problem. All data is reviewed by expert verifiers to ensure all data is accurate prior to public availability. The data is freely available to everyone including scientists, researchers, land managers, land owners, educators, conservationists, ecologists, farmers, foresters, state, and national parks.

Screenshots

bloomWatch4 screens
EDDMapS4 screens

Verdict

The call

The clearest difference is review sentiment: EDDMapS at 57% against bloomWatch's 0%. EDDMapS also leads on rating (4.7 vs 3.6) and update cadence (monthly vs every 4 months). bloomWatch's advantage is iOS requirement (13.0 vs 18.6). On price, ads, in-app purchases and monetization model 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

EDDMapS holds the better App Store score, 4.7 against 3.6. That said, the two scores are not equally well evidenced: EDDMapS has 120 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 0% of bloomWatch's written reviews are positive against 57% of EDDMapS's.

UpkeepUpdate frequency

bloomWatch ships an update every 4 months, EDDMapS monthly. The most recent releases landed on September 10, 2026 and September 25, 2026 respectively.

Scorecard5 real differences · 5 level
bloomWatch versus EDDMapS: the parameters behind the verdict, then further details
ParameterbloomWatchEDDMapS
PriceFreeFree
Rating3.6 (12 ratings)4.7 (120 ratings) — better
Positive reviews0.0% of reviews57.1% of reviews — better
Number of ratings12120 — better
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better18.6
Further details — not scored
Size216 MB251 MB
Age rating4+4+
DeveloperUnited States Environmental Protection Agency (USEPA)Charles T. Bargeron

Customer experience

bloomWatch

All ratings12 ratings
Positive58.3%
Neutral16.7%
Negative25.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

EDDMapS

All ratings120 ratings
Positive92.5%
Neutral3.3%
Negative4.2%
Written reviews14 reviews
Positive57.1%
Neutral7.1%
Negative35.7%

In-app purchases

None

bloomWatch

No in-app purchases

None

EDDMapS

No in-app purchases

Questions

Is bloomWatch free?
bloomWatch is free to download, with no in-app purchases.
Is EDDMapS free?
EDDMapS is free to download, with no in-app purchases.
Which has better reviews, bloomWatch or EDDMapS?
EDDMapS is rated higher. bloomWatch averages 3.6 out of 5 from 12 ratings, while EDDMapS averages 4.7 from 120 ratings.
Do bloomWatch or EDDMapS have ads?
Neither bloomWatch nor EDDMapS shows ads.
Which is updated more often, bloomWatch or EDDMapS?
bloomWatch ships an update every 4 months, and EDDMapS monthly. Most recently, bloomWatch was updated on September 10, 2026 and EDDMapS on September 25, 2026.

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