# Reefability vs CharterPilot

The clearest difference is update cadence: Reefability at daily against CharterPilot's every 8 days. Reefability also leads on device support (5 vs 2) and iOS requirement (15.0.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Reefability sells 9 in-app purchases, starting at $9.99 per month and CharterPilot sells 1 in-app purchase, starting at $12.99 per year. Whichever you choose, the download price is not the number that matters.

Reefability ships an update daily, CharterPilot every 8 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Reefability | CharterPilot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (37 ratings)](https://appshunter.io/ios/app/reefability/id6636472070/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 38.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 8 days |
| Monetization | Free with in-app purchases | — |
| Size | 119 MB | 16 MB |
| Requires iOS | **15.0.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple TV, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Reefability](https://appshunter.io/developer/1762764786) | [Americo Arcucci](https://appshunter.io/developer/6788038390) |

## 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 |


### CharterPilot

[App page](https://appshunter.io/ios/app/charterpilot/id6809903455)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CharterPilot Pro Annual | $12.99 | per year |


## Frequently asked questions

### Is Reefability free?

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

### Is CharterPilot free?

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

### Do Reefability or CharterPilot have ads?

Neither Reefability nor CharterPilot shows ads.

### Which is updated more often, Reefability or CharterPilot?

Reefability ships an update daily, and CharterPilot every 8 days. Most recently, Reefability was updated on October 25, 2026 and CharterPilot on October 25, 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.*