# Reef.Tools vs Machining Calculators

The clearest difference is in-app purchases: Reef.Tools at none against Machining Calculators's 3. Machining Calculators's advantage is iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Machining Calculators sells 3 in-app purchases, starting at $2.99 per month. Reef.Tools asks for nothing beyond the download.

## The numbers

| Metric | Reef.Tools | Machining Calculators |
| --- | --- | --- |
| 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 | No |
| Update frequency | Daily | — |
| Monetization | Free | — |
| Size | 32 MB | 37 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ivena LLC](https://appshunter.io/developer/1787597398) | [Ashvin Kevadiya](https://appshunter.io/developer/1756324971) |

## 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


### Machining Calculators

[App page](https://appshunter.io/ios/app/machining-calculators/id6740812774)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $5.99 | per year |
| Lifetime | $12.99 | one-time |


## Frequently asked questions

### Is Reef.Tools free?

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

### Is Machining Calculators free?

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

### Do Reef.Tools or Machining Calculators have ads?

Neither Reef.Tools nor Machining Calculators shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*