Comparison

Fish Sorter vs NRKW ID

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

Head to head
About

Fish Sorter

Identify freshwater fish species in British Columbia with illustrated, easy-to-understand questions. This guide provides detailed information on nearly 90 species, including photos, descriptions, and distribution, curated by an expert.

Highlights
  • Identify nearly 90 BC freshwater fish species
  • Illustrated, jargon-free identification questions
  • Detailed species information (photos, names, descriptions)
  • Geographic distribution maps
  • Offline content access
  • Regular content updates
Features
Read full description

Fish Sorter helps users identify the almost 90 fish species found in lakes and streams of British Columbia, including 17 species that have been introduced from other areas. From the headwaters of the Yukon River to the Flathead River in southeastern BC, Fish Sorter will help you sort through the amazing diversity of our freshwater fishes. Many of these species are also found in adjacent areas of Yukon, Northwest Territories, Alaska, Alberta, Idaho, Montana, and Washington State. Unlike printed dichotomous keys, which use jargon and often require specialized knowledge, Fish Sorter uses easy-to-understand, illustrated questions that assume no prior knowledge and allows users to skip questions at any time. Fish Sorter includes almost 200 photos, current and former names, taxonomic details, clear morphological and ecological descriptions, geographic distributions, lists of other fishes that “could be confused with” your specimen, and brief summaries of life history and conservation information – all curated by Dr. Eric Taylor (Professor of Zoology, UBC). Hard copy guides can be quickly out-of-date, but Fish Sorter content will be regularly updated with naming revisions, additional photos, new species, and more. Plus, content is available anytime and does not require an internet connection, making Fish Sorter an excellent companion on any trip to BC’s lakes and streams while fishing, hiking, or camping. Great for educators, students, consultants, anglers, naturalists, and all fish enthusiasts! Thanks to photographers who provided images and to Derek Tan (UBC Beaty Biodiversity Museum) for image editing and illustrations.

About

NRKW ID

This app provides up-to-date identification images and detailed information for individuals in the Northern Resident killer whale population. Navigate by clan, pod, matriline, sex, or age class to learn about each whale's name, sex, birth year, and mother.

Highlights
  • Killer whale identification images
  • Detailed individual information
  • Navigation by clan, pod, and matriline
  • Filtering by sex and age class
  • Full-screen image viewing
  • News on population status
Features
Read full description

This application provides up to date identification images of all live individuals belonging to the Northern Resident killer whale population. Annual updates will include the addition of images for new calves, revised images for individuals whose appearance has significantly changed and relevant notes. You can navigate by Clan, Pod and Matriline, or by sex and age class. In the ALL section, "Mature females" include all females 15 years of age or older, individuals over 14 who have not sprouted and any younger individuals who have given birth. "Mature males" include all individuals who have started sprouting, males with a dorsal fin that has reached its maximum height after sprouting, and all known males over 14 who have not started sprouting yet. "Juveniles" include all individuals aged between 4 and 14 years old and "Calves" include all individuals aged 3 or less. Individuals in the ALL section are arranged alphanumerically by name, whereas in the Matriline view, they are first laid out by generation, each of which is indented, and secondly by birth year. Identification images of each killer whale include information about the individual (name, sex, birth year, mother) and information about the image (photographer and year taken). Each image can be visualized in full screen by clicking on it. The News section provides information on the status of individuals in the Northern Resident killer whale population. **TERMS & CONDITIONS** These terms and conditions of service are a legal binding agreement between you and Bay Cetology governing your use of the NRKW ID Application. By using the app, you agree to be bound by the following Terms: The NRKW ID App and all the trademarks, copyrights, database rights and other intellectual property rights related to it, belong to the owner of the app, Bay Cetology. The NRKW ID App and all of its content, including, but not limited to, images, text, graphic designs such as logos and icons must not be copied, modified or republished in any way without permission from Bay Cetology. Any attempt to extract the source code of the NRKW ID App, translate the app into other languages, or make derivative versions is not permitted. The NRKW ID App stores and processes your name, email address and password, as stated in our Privacy Policy. It is your responsibility to keep your phone and access to the app secure. If we terminate the NRKW ID app, (a) the rights and licenses granted to you in these terms will end; (b) you must stop using the app, and (if needed) delete it from your device. Bay Cetology reserves the right to change the Terms at any time without prior notice. Your continued access and use of the app after such changes indicates your acceptance of the Terms as modified. This NRKW ID App was made possible with data and support from Fisheries and Oceans Canada. App design by Elysanne Durand and Jared Towers. App icon and calf identification image placeholder designed by Tasli Shaw. **CONTACT US** If you have any questions or suggestions, or wish to report copyright infringements, contact us at info@baycetology.org.

Screenshots

Fish Sorter4 screens
NRKW ID4 screens

Verdict

The call

The clearest difference is review sentiment: Fish Sorter at 100% against NRKW ID's 50%. NRKW ID's advantage is price (Free vs $3.99) and update cadence (every 2 weeks vs every 5 months). On ads, in-app purchases, device support and iOS requirement 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

NRKW ID is free to download; Fish Sorter costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fish Sorter ships an update every 5 months, NRKW ID every 2 weeks. The most recent releases landed on September 21, 2026 and September 16, 2026 respectively.

Scorecard4 real differences · 6 level
Fish Sorter versus NRKW ID: the parameters behind the verdict, then further details
ParameterFish SorterNRKW ID
Price$3.99Free — better
Rating5.0 (4 ratings) — better
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings4 — better
Update frequencyEvery 5 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.014.0 — better
Further details — not scored
Size38 MB476 MB
Age rating4+17+
DeveloperPatrick MartoneAlert Bay Cetological Society

Customer experience

Fish Sorter

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

NRKW ID

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Fish Sorter

No in-app purchases

None

NRKW ID

No in-app purchases

Questions

Is Fish Sorter free?
Fish Sorter costs $3.99, with no in-app purchases.
Is NRKW ID free?
NRKW ID is free to download, with no in-app purchases.
Do Fish Sorter or NRKW ID have ads?
Neither Fish Sorter nor NRKW ID shows ads.
Which is updated more often, Fish Sorter or NRKW ID?
Fish Sorter ships an update every 5 months, and NRKW ID every 2 weeks. Most recently, Fish Sorter was updated on September 21, 2026 and NRKW ID on September 16, 2026.

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