# Reef.Tools vs WetMath

The clearest difference is in-app purchases: Reef.Tools at none against WetMath's 2. Reef.Tools also leads on ads (none vs shown) and update cadence (daily vs every 2 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. WetMath sells 2 one-off in-app purchases. Reef.Tools asks for nothing beyond the download.

Reef.Tools ships an update daily, WetMath every 2 weeks. The most recent releases landed on September 30, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Reef.Tools | WetMath |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/reeftools/id6739948464/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 2 weeks |
| Monetization | Free | — |
| Size | 32 MB | 49 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ivena LLC](https://appshunter.io/developer/1787597398) | [NanoHawk](https://appshunter.io/developer/1805616299) |

## What reviewers say

### Reef.Tools

[App page](https://appshunter.io/ios/app/reeftools/id6739948464)

This app simplifies reef tank maintenance with science-backed tools. It offers a precision dosing calculator for over 30 elements, customizable schedules, and insights into water chemistry. Compare your tank's parameters to natural ocean values.

**Highlights:** Precision dosing calculator for 30+ elements, Customizable dosing schedules, Reef chemistry insights, Support for multiple brands and custom targets, Comparison to natural ocean parameters

**Features:** macOS Compatibility

**In-app purchases:** none


### WetMath

[App page](https://appshunter.io/ios/app/wetmath-aquarium-calculator/id6745920042)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WetMath Pro Unlock | $0.99 | one-time |
| WetMath™ Pro Unlock | $9.99 | one-time |


## Frequently asked questions

### Is Reef.Tools free?

Reef.Tools is free to download, with no in-app purchases.

### Is WetMath free?

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

### Do Reef.Tools or WetMath have ads?

WetMath shows ads; Reef.Tools does not.

### Which is updated more often, Reef.Tools or WetMath?

Reef.Tools ships an update daily, and WetMath every 2 weeks. Most recently, Reef.Tools was updated on September 30, 2026 and WetMath on October 16, 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.*