# Wastewater Operator Test Prep vs Basic Wastewater Operator Prep

The clearest difference is in-app purchases: Wastewater Operator Test Prep at none against Basic Wastewater Operator Prep's 3. Basic Wastewater Operator Prep's advantage is iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Basic Wastewater Operator Prep sells 3 in-app purchases, starting at $6.99 per 7 days. Wastewater Operator Test Prep asks for nothing beyond the download.

## The numbers

| Metric | Wastewater Operator Test Prep | Basic Wastewater Operator Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wastewater-operator-test-prep/id6761349297/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free | — |
| Size | 28 MB | 29 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mike Watson](https://appshunter.io/developer/1848411021) | [FLY SKY PTY LTD](https://appshunter.io/developer/1838696534) |

## What reviewers say

### Wastewater Operator Test Prep

[App page](https://appshunter.io/ios/app/wastewater-operator-test-prep/id6761349297)

This professional calculator provides 16 essential wastewater treatment calculations for licensed operators, covering Class I through Class IV certification math. It displays formulas and substituted values for easy verification and works completely offline, making it ideal for field use.

**Highlights:** 16 essential wastewater calculations, Supports Class I-IV certification math, Shows formulas and substituted values, Works 100% offline, Large, readable results for field use, Copy result for sharing, Calculation history

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

**In-app purchases:** none


### Basic Wastewater Operator Prep

[App page](https://appshunter.io/ios/app/basic-wastewater-operator-prep/id6784085292)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Wastewater Full Access | $6.99 | per 7 days |
| Basic Wastewater Full Access | $16.99 | per month |
| Basic Wastewater Lifetime | $69.99 | one-time |


## Frequently asked questions

### Is Wastewater Operator Test Prep free?

Wastewater Operator Test Prep is free to download, with no in-app purchases.

### Is Basic Wastewater Operator Prep free?

Basic Wastewater Operator Prep is free to download, with in-app purchases available.

### Do Wastewater Operator Test Prep or Basic Wastewater Operator Prep have ads?

Neither Wastewater Operator Test Prep nor Basic Wastewater Operator Prep 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.*