# Reefability vs Aquarium Notepad

The clearest difference is review sentiment: Aquarium Notepad at 100% against Reefability's 33%. Aquarium Notepad also leads on rating (5.0 vs 3.0) and in-app purchases (none vs 9). Reefability's advantage is ratings volume (32 vs 2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Reefability sells 9 in-app purchases, starting at $9.99 per month. Aquarium Notepad asks for nothing beyond the download.

Aquarium Notepad holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Reefability has 32 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 33% of Reefability's written reviews are positive against 100% of Aquarium Notepad's.

Reefability ships an update every 2 days, Aquarium Notepad every 3 days. The most recent releases landed on October 11, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Reefability | Aquarium Notepad |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (32 ratings)](https://appshunter.io/ios/app/reefability/id6636472070/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/aquarium-notepad/id6749213015/reviews)** |
| Number of ratings | **32** | 2 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 85 MB | 35 MB |
| Requires iOS | 15.0.0 | **12** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Reefability](https://appshunter.io/developer/1762764786) | [Quantum Technologies Limited Liability Company](https://appshunter.io/developer/1588354820) |

## What reviewers say

### Reefability

[App page](https://appshunter.io/ios/app/reefability/id6636472070)

This AI-powered app offers scientific precision for managing coral reef aquariums. It analyzes microbiome health, water chemistry, and light optimization, and can identify issues from tank photos. It provides tools for hobbyists and professionals to maintain thriving reef ecosystems.

**Highlights:** AI-driven analysis of reef tank health, Smart photo diagnostics for issue identification, Evidence-based solutions and recommendations, Ecosystem stability insights, Professional tools for reef stores and professionals, Integrated parameter monitoring

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1-Month | $9.99 | per month |
| Controller plan (monthly) | $11.99 | per month |
| 12-Month | $34.99 | per year |
| Controller plan (annual) | $49.99 | per year |
| Day pass | $1.99 | one-time |
| 5 tank rebuilds | $2.99 | one-time |
| Week pass | $4.99 | one-time |
| 15 tank rebuilds | $6.99 | one-time |
| Month pass | $12.99 | one-time |


### Aquarium Notepad

[App page](https://appshunter.io/ios/app/aquarium-notepad/id6749213015)

Manage your aquariums with detailed tracking of water parameters, maintenance schedules, and measurements. This app offers comprehensive tools for serious aquarists to maintain optimal conditions and keep thorough records of their aquatic environments.

**Highlights:** Water parameter tracking, Maintenance task scheduling, Measurement logging, Multiple aquarium support, Data import/export, Charts and analytics

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Reefability free?

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

### Is Aquarium Notepad free?

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

### Which has better reviews, Reefability or Aquarium Notepad?

Aquarium Notepad is rated higher. Reefability averages 3.0 out of 5 from 32 ratings, while Aquarium Notepad averages 5.0 from 2 ratings.

### Do Reefability or Aquarium Notepad have ads?

Neither Reefability nor Aquarium Notepad shows ads.

### Which is updated more often, Reefability or Aquarium Notepad?

Reefability ships an update every 2 days, and Aquarium Notepad every 3 days. Most recently, Reefability was updated on October 11, 2026 and Aquarium Notepad on October 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.*