# Reefability vs iFieldSurvey

The clearest difference is device support: Reefability at 4 against iFieldSurvey's 1. Reefability also leads on 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 iFieldSurvey sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Reefability | iFieldSurvey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (32 ratings)](https://appshunter.io/ios/app/reefability/id6636472070/reviews)** | — |
| Number of ratings | **32** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 85 MB | 5 MB |
| Requires iOS | **15.0.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Reefability](https://appshunter.io/developer/1762764786) | [Naihe Hu](https://appshunter.io/developer/564180065) |

## 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 |


### iFieldSurvey

[App page](https://appshunter.io/ios/app/ifieldsurvey/id6793979432)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MonthlyPro | $2.99 | per month |
| YearlyPro | $24.99 | per year |
| ClassicLifetimePro | $39.99 | one-time |


## Frequently asked questions

### Is Reefability free?

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

### Is iFieldSurvey free?

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

### Do Reefability or iFieldSurvey have ads?

Neither Reefability nor iFieldSurvey shows ads.

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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.*