# Reefability vs Focus or Ketchup

The clearest difference is device support: Reefability at 5 against Focus or Ketchup's 1. On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Reefability sells 9 in-app purchases, starting at $9.99 per month and Focus or Ketchup sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Reefability | Focus or Ketchup |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (40 ratings)](https://appshunter.io/ios/app/reefability/id6636472070/reviews)** | — |
| Number of ratings | **40** | — |
| Positive reviews | 41.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Daily | — |
| Monetization | Free with in-app purchases | — |
| Size | 123 MB | 49 MB |
| Requires iOS | **15.0.0** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple TV, Apple Watch** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Reefability](https://appshunter.io/developer/1762764786) | [Mobi-net.pl](https://appshunter.io/developer/775703176) |

## What reviewers say

### Reefability

[App page](https://appshunter.io/ios/app/reefability/id6636472070)

This app helps manage complex reef aquariums by integrating chemistry, livestock, lighting, and flow data. It provides AI-driven insights, guided setup, and pest identification to optimize tank health and coral growth.

**Highlights:** AI-driven reef tank analysis, Guided tank setup and cycling modes, 3D reef map with PAR and flow estimation, Chemistry logging via voice or photo, Dosing suggestions and supplement tracking, Livestock care sheets and compatibility reports, Pest identification and tracking, Weather and safety alerts

**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 |


### Focus or Ketchup

[App page](https://appshunter.io/ios/app/focus-or-ketchup-study-timer/id6808171272)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Family Membership | $1.99 | per month |
| Full Family Annual | $17.99 | per year |


## Frequently asked questions

### Is Reefability free?

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

### Is Focus or Ketchup free?

Focus or Ketchup is free to download, with in-app purchases available.

### Do Reefability or Focus or Ketchup have ads?

Neither Reefability nor Focus or Ketchup 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.*