# SmartAquar vs Koi Worth

The clearest difference is rating: Koi Worth at 5.0 against SmartAquar's 2.0. Koi Worth also leads on iOS requirement (13.0 vs 15.5). SmartAquar's advantage is in-app purchases (none vs 3) and ratings volume (3 vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Koi Worth sells 3 in-app purchases, starting at $6.99 per month. SmartAquar asks for nothing beyond the download.

Koi Worth holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

SmartAquar ships an update every 2 months, Koi Worth every 5 weeks. The most recent releases landed on October 7, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | SmartAquar | Koi Worth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/smartaquar/id1603612596/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/koi-worth/id6758781822/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 69 MB | 12 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Gizwits IoT Technology Co., Ltd.](https://appshunter.io/developer/1468450527) | [Scott Hause](https://appshunter.io/developer/1521582010) |

## What reviewers say

### SmartAquar

[App page](https://appshunter.io/ios/app/smartaquar/id1603612596)

Remotely manage your aquarium's heating rod from any location. Supports controlling multiple devices simultaneously and allows for easy sharing with family members. Receive instant notifications about your tank's status.

**Highlights:** Remote heating rod control, Multi-device support, Automatic operation, Device sharing, Real-time condition alerts

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

**In-app purchases:** none


### Koi Worth

[App page](https://appshunter.io/ios/app/koi-worth/id6758781822)

This app uses AI to analyze and grade koi fish from photos, providing insights into their body shape, color, pattern, and growth potential. It also estimates market value, identifies potential investments, and helps users track their koi collections.

**Highlights:** AI koi grading (body shape, color, pattern, growth), Real market value estimates, 5K Sleeper analysis for investment potential, Dealer price insights, Compare multiple koi, Track koi collection and development, Development forecasts

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hobby Plan | $6.99 | per month |
| Collector Plan | $14.99 | per month |
| MASTER | $29.99 | per month |


## Frequently asked questions

### Is SmartAquar free?

SmartAquar is free to download, with no in-app purchases.

### Is Koi Worth free?

Koi Worth is free to download, with in-app purchases available.

### Which has better reviews, SmartAquar or Koi Worth?

Koi Worth is rated higher. SmartAquar averages 2.0 out of 5 from 3 ratings, while Koi Worth averages 5.0 from 1 ratings.

### Do SmartAquar or Koi Worth have ads?

Neither SmartAquar nor Koi Worth shows ads.

### Which is updated more often, SmartAquar or Koi Worth?

SmartAquar ships an update every 2 months, and Koi Worth every 5 weeks. Most recently, SmartAquar was updated on October 7, 2026 and Koi Worth on September 16, 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.*