Comparison

Fish Harmony vs Fish Identifier

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

Head to head
About

Fish Harmony

This app provides comprehensive compatibility data for various aquarium fish species, helping you determine if they will coexist peacefully. It also offers reef safety information for saltwater fish to protect your coral. Users can perform direct comparisons between two fish species.

Highlights
  • Fish compatibility data
  • Reef safe ratings
  • Freshwater and saltwater modes
  • Fish-to-fish comparison
  • Compatibility warnings
Features
Read full description

Fish Harmony is meant to give comprehensive compatibility data for every type of aquarium fish. Not sure if a lionfish is compatible with a clownfish (hint: it isn't)? Fish Harmony will also let you know if that kind of fish is Reef Safe, Reef Safe With Caution or Not Reef Safe (in saltwater mode only, obviously!), to prevent your coral from being munched on! You can also use the Compare Fish-To-Fish button to do a 1:1 comparison of your chosen fish to another. For example, let's say you chose "Butterflyfish," and you want to see if it is compatible with Clownfish. You could just browse the "browse view" for Clownfish, but by clicking the "fish-to-fish", you can find the exact fish you are looking to compare with the Butterflyfish. Available for both freshwater and saltwater. Let us know what you think! Leave feedback or a review please! Thanks so much!

About

Fish Identifier

Instantly identify fish species using AI technology by simply taking or uploading a photo. Explore detailed information on thousands of fish species to satisfy your curiosity about aquatic life.

Highlights
  • AI-powered fish identification
  • Identify from photos
  • Fast and accurate ID
  • Database of 3000+ species
  • Detailed fish information
  • User-friendly interface
Features
Read full description

- Instantly identify fishes by AI technology with extremely accurate metadata - Simply take or upload a snap of a fish, and Fish Identifier can help you identify it within seconds. - This app aims to satisfy your curiosity about thousands of species of fish around us. Key features: - Take a picture to identify fishes. Just take or upload a photo of fish, Fish Identification can quickly identify the fish and show you the detailed information. - Fast and accurate ID of 3000+ species of fishes - Extensive database, various kinds of information about all types of fishes - Finely designed and user-friendly interface About Fish Identifier Premium: - Premium Weekly 2.99$/weekly (auto-renewable) - Premium Yearly 29.99$/yearly (auto-renewable) • Payment will be charged to iTunes Account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period • The account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase Terms of Use: https://sites.google.com/view/fishidentification2022/terms-of-use Privacy Policy: https://sites.google.com/view/fishidentification2022/privacy-policy

Screenshots

Fish Harmony4 screens
Fish Identifier4 screens

Verdict

The call

The clearest difference is rating: Fish Identifier at 3.9 against Fish Harmony's 3.4. Fish Identifier also leads on update cadence (every 5 weeks vs every 9 months) and ratings volume (80 vs 10). Fish Harmony's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price and device support 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. Fish Identifier sells 2 in-app purchases, starting at $2.99 per 7 days. Fish Harmony asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Fish Identifier holds the better App Store score, 3.9 against 3.4. That said, the two scores are not equally well evidenced: Fish Identifier has 80 ratings behind it against 10, so its average is the more settled of the two.

UpkeepUpdate frequency

Fish Harmony ships an update every 9 months, Fish Identifier every 5 weeks. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
Fish Harmony versus Fish Identifier: the parameters behind the verdict, then further details
ParameterFish HarmonyFish Identifier
PriceFreeFree
Rating3.4 (10 ratings)3.9 (80 ratings) — better
Positive reviews—58.2% of reviews
Number of ratings1080 — better
Update frequencyEvery 9 monthsEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better14.0
Further details — not scored
Size33 MB48 MB
Age rating4+4+
DeveloperPat CanellaDinh Dong Nguyen

Customer experience

Fish Harmony

All ratings10 ratings
Positive60.0%
Neutral0.0%
Negative40.0%

Fish Identifier

All ratings77 ratings
Positive68.8%
Neutral6.5%
Negative24.7%
Written reviews55 reviews
Positive58.2%
Neutral1.8%
Negative40.0%

Bugs and requests

Fish Harmony

Not enough reviews yet to summarise bugs or requests.

Fish Identifier

Reported bugs

3 issues
  • Incorrect fish identification
  • App asks to pay after one use
  • Ads interrupt functionality

Requested features

4 requests
  • More free identifications
  • Longer trial period
  • No limit on monthly subscription
  • Remove ads without subscription

In-app purchases

None

Fish Harmony

No in-app purchases

2 purchases

Fish Identifier

Subscriptions2
  • Premium Weekly$2.997 Days
  • Premium Yearly$29.991 Year

Questions

Is Fish Harmony free?
Fish Harmony is free to download, with no in-app purchases.
Is Fish Identifier free?
Fish Identifier is free to download, with in-app purchases available.
Which has better reviews, Fish Harmony or Fish Identifier?
Fish Identifier is rated higher. Fish Harmony averages 3.4 out of 5 from 10 ratings, while Fish Identifier averages 3.9 from 80 ratings.
Do Fish Harmony or Fish Identifier have ads?
Fish Identifier shows ads; Fish Harmony does not.
Which is updated more often, Fish Harmony or Fish Identifier?
Fish Harmony ships an update every 9 months, and Fish Identifier every 5 weeks. Most recently, Fish Harmony was updated on October 13, 2026 and Fish Identifier on October 24, 2026.

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