# AquaSense.fish vs ReefNote

The clearest difference is in-app purchases: AquaSense.fish at none against ReefNote's 3. AquaSense.fish also leads on update cadence (every 5 days vs every 3 weeks) and iOS requirement (15.1 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. ReefNote sells 3 in-app purchases, starting at $5.99 per month. AquaSense.fish asks for nothing beyond the download.

AquaSense.fish ships an update every 5 days, ReefNote every 3 weeks. The most recent releases landed on October 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | AquaSense.fish | ReefNote |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/aquasensefish/id6777320311/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 54 MB | 6 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [BRYCE SCOTT SMITH](https://appshunter.io/developer/6777320313) | [InnovaLabWorks](https://appshunter.io/developer/1888514726) |

## What reviewers say

### AquaSense.fish

[App page](https://appshunter.io/ios/app/aquasensefish/id6777320311)

This app helps you maintain healthy aquariums by monitoring water parameters, identifying fish from photos, and providing compatibility information. It offers tools for planning tank setups, tracking livestock, and logging maintenance, with AI-powered guidance for both freshwater and saltwater tanks.

**Highlights:** Water parameter monitoring (pH, ammonia, etc.), Photo-based fish identification, Livestock compatibility checker, Species library with care requirements, Tank build planning tool, Maintenance logging and reminders, AI-powered care guidance

**Features:** macOS Compatibility

**In-app purchases:** none


### ReefNote

[App page](https://appshunter.io/ios/app/reefnote-aquarium-log/id6788604575)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReefNote Pro | $5.99 | per month |
| ReefNote Pro | $34.99 | per year |
| ReefNote Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is AquaSense.fish free?

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

### Is ReefNote free?

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

### Do AquaSense.fish or ReefNote have ads?

Neither AquaSense.fish nor ReefNote shows ads.

### Which is updated more often, AquaSense.fish or ReefNote?

AquaSense.fish ships an update every 5 days, and ReefNote every 3 weeks. Most recently, AquaSense.fish was updated on October 24, 2026 and ReefNote on October 4, 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.*