# Hydrology Formulator vs Division calculator pro

The clearest difference is in-app purchases: Division calculator pro at none against Hydrology Formulator's 1. Division calculator pro also leads on iOS requirement (12.0 vs 18.6). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Hydrology Formulator sells 1 one-off in-app purchase. Division calculator pro asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Hydrology Formulator against 5.0 for Division calculator pro. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

## The numbers

| Metric | Hydrology Formulator | Division calculator pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/hydrology-formulator/id346512904/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/division-calculator-pro/id6740855270/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Monetization | Free | — |
| Size | 18 MB | 37 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## What reviewers say

### Hydrology Formulator

[App page](https://appshunter.io/ios/app/hydrology-formulator/id346512904)

This app provides a comprehensive collection of over 1,000 formulas, calculators, and conversions for hydrology and civil engineering. It covers a wide range of topics including groundwater, stormwater, pipe flow, and water pollution.

**Highlights:** 1,000+ formulas and calculators, Groundwater analysis tools, Stormwater design calculations, Open channel and pipe flow equations, Water pollution modeling, Conversions and reference data

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $3.99 | one-time |


### Division calculator pro

[App page](https://appshunter.io/ios/app/division-calculator-pro/id6740855270)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hydrology Formulator free?

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

### Is Division calculator pro free?

Division calculator pro is free to download, with no in-app purchases.

### Which has better reviews, Hydrology Formulator or Division calculator pro?

Hydrology Formulator and Division calculator pro are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Hydrology Formulator or Division calculator pro have ads?

Neither Hydrology Formulator nor Division calculator pro shows ads.

---

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