# iCalc Triangle Calculator Pro vs Fish Identifier

The clearest difference is rating: Fish Identifier at 5.0 against iCalc Triangle Calculator Pro's 3.6. Fish Identifier also leads on update cadence (every 2 months vs every 19 months). iCalc Triangle Calculator Pro's advantage is in-app purchases (none vs 2). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Fish Identifier sells 2 in-app purchases, starting at $4.99 per 7 days. iCalc Triangle Calculator Pro asks for nothing beyond the download.

Fish Identifier holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 5 and 2 respectively.

iCalc Triangle Calculator Pro ships an update every 19 months, Fish Identifier every 2 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | iCalc Triangle Calculator Pro | Fish Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (5 ratings)](https://appshunter.io/ios/app/icalc-triangle-calculator-pro/id1603009957/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fish-identifier-fishium/id6752485636/reviews)** |
| Number of ratings | **5** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 2 months** |
| Monetization | Paid | **Freemium** |
| Size | 4 MB | 48 MB |
| Requires iOS | 15.2 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jake Elrod](https://appshunter.io/developer/365336355) | [Roman Pieskov](https://appshunter.io/developer/1758891658) |

## What reviewers say

### iCalc Triangle Calculator Pro

[App page](https://appshunter.io/ios/app/icalc-triangle-calculator-pro/id1603009957)

Explore the fundamental properties of triangles with this interactive educational application. It allows users to delve into angles, area, sides, and perimeter, providing a hands-on approach to understanding geometric concepts.

**Highlights:** Triangle property exploration, Calculate angles, Calculate area, Calculate sides, Calculate perimeter, Interactive learning

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Fish Identifier

[App page](https://appshunter.io/ios/app/fish-identifier-fishium/id6752485636)

Instantly identify fish species using AI by taking a photo. Access a vast database with detailed information on biology, habitat, and behavior. Track your discoveries and test your knowledge with interactive quizzes.

**Highlights:** AI-powered fish identification, Extensive database of 30,000+ species, Detailed species information, Identification history, Interactive learning quizzes, Customizable measurement units

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 Week | $4.99 | per 7 days |
| Premium 1 Year | $29.99 | per year |


## Frequently asked questions

### Is iCalc Triangle Calculator Pro free?

iCalc Triangle Calculator Pro 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, iCalc Triangle Calculator Pro or Fish Identifier?

Fish Identifier is rated higher. iCalc Triangle Calculator Pro averages 3.6 out of 5 from 5 ratings, while Fish Identifier averages 5.0 from 2 ratings.

### Do iCalc Triangle Calculator Pro or Fish Identifier have ads?

Neither iCalc Triangle Calculator Pro nor Fish Identifier shows ads.

### Which is updated more often, iCalc Triangle Calculator Pro or Fish Identifier?

iCalc Triangle Calculator Pro ships an update every 19 months, and Fish Identifier every 2 months. Most recently, iCalc Triangle Calculator Pro was updated on November 3, 2026 and Fish Identifier on November 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*