# Aquarist's Notes vs ReefPilot ai

The clearest difference is in-app purchases: ReefPilot ai at none against Aquarist's Notes's 2. Aquarist's Notes's advantage is update cadence (every 6 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Aquarist's Notes sells 2 in-app purchases, starting at $1.99 per month. ReefPilot ai asks for nothing beyond the download.

Aquarist's Notes ships an update every 6 days, ReefPilot ai every 3 weeks. The most recent releases landed on September 30, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Aquarist's Notes | ReefPilot ai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/reefpilot-ai/id6761786503/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | — | Free |
| Size | 16 MB | 5 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ludek Slouf](https://appshunter.io/developer/1664390856) | [Yakov Wider](https://appshunter.io/developer/1891473555) |

## What reviewers say

### Aquarist's Notes

[App page](https://appshunter.io/ios/app/aquarists-notes/id6451252680)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $1.99 | per month |
| Annual subscription | $9.99 | per year |


### ReefPilot ai

[App page](https://appshunter.io/ios/app/reefpilot-ai/id6761786503)

This app helps reef aquarium enthusiasts manage their tanks. It tracks water parameters, provides AI-driven insights and maintenance reminders, and logs expenses. It also includes a suite of tools like AI chat and a livestock gallery.

**Highlights:** Water parameter tracking, AI-powered insights and warnings, Smart maintenance reminders, Expense and cost tracking, AI chat assistant, Livestock gallery, Tank photo timeline

**In-app purchases:** none


## Frequently asked questions

### Is Aquarist's Notes free?

Aquarist's Notes is free to download, with in-app purchases available.

### Is ReefPilot ai free?

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

### Do Aquarist's Notes or ReefPilot ai have ads?

Neither Aquarist's Notes nor ReefPilot ai shows ads.

### Which is updated more often, Aquarist's Notes or ReefPilot ai?

Aquarist's Notes ships an update every 6 days, and ReefPilot ai every 3 weeks. Most recently, Aquarist's Notes was updated on September 30, 2026 and ReefPilot ai on October 17, 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.*