HerpMapper vs EDDMapS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HerpMapper
Record reptile and amphibian observations with photos, sounds, and GPS locations. Your data supports scientific research and conservation efforts globally. Access your findings online and contribute to a shared database.
- Record observations with photos and sound
- Automatic GPS location tagging
- Offline recording capability
- Searchable herpetofauna database
- Data contribution to research and conservation
- View records on the HerpMapper website
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HerpMapper is a 501(c)(3) nonprofit organization designed to gather and share information about reptile and amphibian observations across the planet. Using the HerpMapper mobile app, you can create records of your herp observations and keep them all in one place. In turn, your data is made available to HerpMapper Partners – groups who use your recorded observations for research, conservation, and preservation purposes. Your observations can make valuable contributions on the behalf of amphibians and reptiles. Using your phone’s camera and GPS capabilities, the HerpMapper mobile app creates a ‘voucher record’ of your find, incorporating photos of the animal, and recording the location. For calling frogs and toads, the app enables you to record and include a sound file in a record. The date and time of day are also recorded. The app features a searchable database of the common and scientific names for all of the world’s herpetofauna, and you can search for either type of name by entering just a fragment. The newest version of the app allows you to add multiple photos and soundfiles to a record The HerpMapper mobile app does not require wireless or cellular service in order to properly record locations - it uses your phone’s native GPS device, which remains in satellite contact when outside (many HerpMapper records have been recorded in remote corners of the globe). Once you are back in wireless or cellular range, you can upload (sync) your collected records to the HerpMapper database. Once uploaded, you can view any and all of your records from the HerpMapper website (www.herpmapper.org). Creating a HerpMapper account is fast, simple, and free, and you can use the site and the mobile app to keep track of your finds, build a life list, and contribute to science and herp conservation! Instructions for creating an account, and installing and using the mobile app, are listed on the HerpMapper website. Who can see the records you create? There are two levels of visibility for records. Only you and HerpMapper Partners have access to all of the data in the records you create. Other users of HerpMapper and the general public can only see very basic information in your records – they do not have access to exact locality data. Any pictures attached to a record have their locality metadata stripped, so they can be seen by everyone on the HerpMapper website, which means you can also see the cool herps being recorded by other people from around the world. Who are HerpMapper's Partners? For the most part, they are biologists working for state or regional agencies, university researchers, or conservation organizations across the globe. A list of HerpMapper Partners is maintained on the HerpMapper website.
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.
- Document invasive species distribution
- User-friendly mapping system
- Data submission and querying
- Interactive maps
- Expert data verification
- Early Detection and Rapid Response support
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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
Verdict
The clearest difference is rating: EDDMapS at 4.7 against HerpMapper's 3.5. EDDMapS also leads on review sentiment (57% vs 42%) and update cadence (monthly vs every 3 months). HerpMapper's advantage is iOS requirement (15.0 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
EDDMapS holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: EDDMapS has 120 ratings behind it against 24, so its average is the more settled of the two. Written reviews point the same way: 42% of HerpMapper's written reviews are positive against 57% of EDDMapS's.
HerpMapper ships an update every 3 months, EDDMapS monthly. The most recent releases landed on June 1, 2026 and September 25, 2026 respectively.
| Parameter | HerpMapper | EDDMapS |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (24 ratings) | 4.7 (120 ratings) — better |
| Positive reviews | 41.7% of reviews | 57.1% of reviews — better |
| Number of ratings | 24 | 120 — better |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 67 MB | 251 MB |
| Age rating | 4+ | 4+ |
| Developer | Donald Becker | Charles T. Bargeron |
Customer experience
HerpMapper
EDDMapS
In-app purchases
HerpMapper
No in-app purchases
EDDMapS
No in-app purchases









