# ReefMind vs Biotope

The clearest difference is update cadence: Biotope at every 3 days against ReefMind's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ReefMind sells 2 in-app purchases, starting at $6.99 per month and Biotope sells 6 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReefMind ships an update every 5 weeks, Biotope every 3 days. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ReefMind | Biotope |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/reefmind/id6761550965/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 28 MB | 84 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Ian Fun](https://appshunter.io/developer/1890242181) | [Kursat Ufuk Coskun](https://appshunter.io/developer/6787365202) |

## What reviewers say

### ReefMind

[App page](https://appshunter.io/ios/app/reefmind/id6761550965)

This AI-powered companion assists saltwater aquarium hobbyists with expert advice, species identification, and tank management. It offers features like AI chat, photo identification, and a species browser to help users make informed decisions for their reef tanks.

**Highlights:** AI Chat for reef keeping advice, Photo identification for fish and coral, Species browser with care sheets, Tank management and parameter tracking, Livestock compatibility checker, Dosing calculator, Fish SOS emergency triage

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $6.99 | per month |
| Power | $14.99 | per month |


### Biotope

[App page](https://appshunter.io/ios/app/biotope-aquarium-planner/id6787365200)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Biotope Plus (Monthly) | $4.99 | per month |
| Biotope Plus (Yearly) | $39.99 | per year |
| 100 Credits | $0.99 | one-time |
| 550 Credits (+50 Bonus) | $3.99 | one-time |
| Remove Ads (Lifetime) | $4.99 | one-time |
| 1200 Credits (+200 Bonus) | $9.99 | one-time |


## Frequently asked questions

### Is ReefMind free?

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

### Is Biotope free?

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

### Do ReefMind or Biotope have ads?

Neither ReefMind nor Biotope shows ads.

### Which is updated more often, ReefMind or Biotope?

ReefMind ships an update every 5 weeks, and Biotope every 3 days. Most recently, ReefMind was updated on October 31, 2026 and Biotope 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.*