# ReefKeep vs ReefAI3

The clearest difference is price: ReefKeep at Free against ReefAI3's $1.99. ReefAI3's advantage is in-app purchases (none vs 3) and iOS requirement (15.1 vs 17.0). On update cadence, ads and device support there is nothing between them.

ReefKeep is free to download; ReefAI3 costs $1.99 up front. ReefKeep sells 3 in-app purchases, starting at $4.99 per month. ReefAI3 asks for nothing beyond the download.

ReefKeep ships an update daily, ReefAI3 every 2 days. The most recent releases landed on October 9, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ReefKeep | ReefAI3 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 days |
| Size | 2 MB | 30 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Enovira AB](https://appshunter.io/developer/1878624311) | [Austin Lamitina](https://appshunter.io/developer/1884142429) |

## What reviewers say

### ReefKeep

[App page](https://appshunter.io/ios/app/reefkeep/id6762442240)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReefKeep Pro - monthly | $4.99 | per month |
| ReefKeep Pro - Yearly | $29.99 | per year |
| ReefKeep Lifetime Subscription | $79.99 | one-time |


### ReefAI3

[App page](https://appshunter.io/ios/app/reefai3/id6764714629)

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

**In-app purchases:** none


## Frequently asked questions

### Is ReefKeep free?

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

### Is ReefAI3 free?

ReefAI3 costs $1.99, with no in-app purchases.

### Do ReefKeep or ReefAI3 have ads?

Neither ReefKeep nor ReefAI3 shows ads.

### Which is updated more often, ReefKeep or ReefAI3?

ReefKeep ships an update daily, and ReefAI3 every 2 days. Most recently, ReefKeep was updated on October 9, 2026 and ReefAI3 on September 30, 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.*