# Aquarium Co vs Reef Analysis

The clearest difference is in-app purchases: Reef Analysis at none against Aquarium Co's 2. Reef Analysis also leads on ads (none vs shown) and update cadence (every 4 days vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Aquarium Co sells 2 in-app purchases, starting at $3.99 per month. Reef Analysis asks for nothing beyond the download.

Aquarium Co ships an update monthly, Reef Analysis every 4 days. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Aquarium Co | Reef Analysis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/aquarium-co-pilot-tank-log/id6751057474/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 86 MB | 10 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AARON ROY GARFORTH](https://appshunter.io/developer/1833288271) | [Ark Technology Ltd](https://appshunter.io/developer/6781222453) |

## What reviewers say

### Aquarium Co

[App page](https://appshunter.io/ios/app/aquarium-co-pilot-tank-log/id6751057474)

This app helps manage freshwater, planted, and saltwater aquariums by tracking water parameters, livestock, and maintenance. It offers AI-powered insights for tank health and compatibility checks, with a free version for one tank and a subscription for premium features.

**Highlights:** Water parameter tracking, Livestock management, AI-powered health score, Compatibility checker, Maintenance scheduling, Dosing calculator, ICP test analysis

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Subscription | $3.99 | per month |
| Pro Access | $39.99 | per year |


### Reef Analysis

[App page](https://appshunter.io/ios/app/reef-analysis/id6781222451)

**In-app purchases:** none


## Frequently asked questions

### Is Aquarium Co free?

Aquarium Co is free to download, with in-app purchases available.

### Is Reef Analysis free?

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

### Do Aquarium Co or Reef Analysis have ads?

Aquarium Co shows ads; Reef Analysis does not.

### Which is updated more often, Aquarium Co or Reef Analysis?

Aquarium Co ships an update monthly, and Reef Analysis every 4 days. Most recently, Aquarium Co was updated on October 24, 2026 and Reef Analysis on October 23, 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.*