# AquariumNotes vs Fish Tank Log

The clearest difference is ads: Fish Tank Log at none against AquariumNotes's shown. Fish Tank Log also leads on update cadence (every 2 weeks vs monthly) and iOS requirement (15.1 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. AquariumNotes sells 3 in-app purchases, starting at $2.99 per month and Fish Tank Log sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

AquariumNotes ships an update monthly, Fish Tank Log every 2 weeks. The most recent releases landed on October 9, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | AquariumNotes | Fish Tank Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (6 ratings)](https://appshunter.io/ios/app/fish-tank-log/id6757759234/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | — | Freemium |
| Size | 7 MB | 48 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yusuke Morimoto](https://appshunter.io/developer/1702989537) | [Toolit Media LLC](https://appshunter.io/developer/1331221462) |

## What reviewers say

### AquariumNotes

[App page](https://appshunter.io/ios/app/aquariumnotes/id6480376453)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PremiumMember/1Month | $2.99 | per month |
| PremiumMember/6Month | $9.99 | per 6 months |
| PremiumMember/1Year | $19.99 | per year |


### Fish Tank Log

[App page](https://appshunter.io/ios/app/fish-tank-log/id6757759234)

This app helps aquarium enthusiasts track and manage their tanks. Log water parameters, schedule maintenance reminders, and record tank activities. An AI assistant provides guidance and answers questions to ensure consistent aquarium care.

**Highlights:** Create profiles for multiple tanks, Track water parameters with charts, Set maintenance reminders, Log tank activities chronologically, AI assistant for guidance and questions, Support for freshwater, saltwater, planted, and shrimp tanks

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fish Tank Log Pro | $3.99 | per month |
| Fish Tank Log Pro | $19.99 | per year |
| Fish Tank Log Pro | $29.99 | per year |


## Frequently asked questions

### Is AquariumNotes free?

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

### Is Fish Tank Log free?

Fish Tank Log is free to download, with in-app purchases available.

### Do AquariumNotes or Fish Tank Log have ads?

AquariumNotes shows ads; Fish Tank Log does not.

### Which is updated more often, AquariumNotes or Fish Tank Log?

AquariumNotes ships an update monthly, and Fish Tank Log every 2 weeks. Most recently, AquariumNotes was updated on October 9, 2026 and Fish Tank Log on October 20, 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.*