# WPI Exam Prep vs Basic Wastewater Operator Prep

The clearest difference is in-app purchases: WPI Exam Prep at none against Basic Wastewater Operator Prep's 3. Basic Wastewater Operator Prep's advantage is iOS requirement (13.0 vs 16.4). 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. WPI Exam Prep asks for nothing beyond the download.

## The numbers

| Metric | WPI Exam Prep | Basic Wastewater Operator Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 120 MB | 29 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Memorang](https://appshunter.io/developer/1011440560) | [FLY SKY PTY LTD](https://appshunter.io/developer/1838696534) |

## What reviewers say

### WPI Exam Prep

[App page](https://appshunter.io/ios/app/wpi-exam-prep/id6754835308)

**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 WPI Exam Prep free?

WPI Exam 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 WPI Exam Prep or Basic Wastewater Operator Prep have ads?

Neither WPI Exam 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.*