# Wastewater Operator Prep vs LogicBrain

Wastewater Operator Prep and LogicBrain are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Wastewater Operator Prep sells 2 in-app purchases, starting at $5.99 per 7 days and LogicBrain sells 3 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Wastewater Operator Prep ships an update every 3 weeks, LogicBrain every 5 weeks. The most recent releases landed on October 12, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Wastewater Operator Prep | LogicBrain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wastewater-operator-prep-exam/id6789188108/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 3 MB | 9 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hermes Inteligencia Digital Ltda](https://appshunter.io/developer/1896694873) | [Phu Ho](https://appshunter.io/developer/380467843) |

## What reviewers say

### Wastewater Operator Prep

[App page](https://appshunter.io/ios/app/wastewater-operator-prep-exam/id6789188108)

Prepare for your wastewater operator certification exam with extensive practice questions and detailed explanations. This app covers all treatment processes and offers personalized study plans, timed modes, and progress tracking to boost your confidence and understanding.

**Highlights:** 1,027 practice questions, Detailed explanations for each answer, Full treatment process coverage, Personalized daily study plans, Timed practice modes, Progress tracking and pass probability

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Wastewater Prep Weekly | $5.99 | per 7 days |
| Wastewater Prep Monthly | $14.99 | per month |


### LogicBrain

[App page](https://appshunter.io/ios/app/logicbrain-logic-training/id6789635234)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LogicBrain Pro Monthly | $12.99 | per month |
| LogicBrain Pro Annual | $59.99 | per year |
| LogicBrain Pro Lifetime | $149.99 | one-time |


## Frequently asked questions

### Is Wastewater Operator Prep free?

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

### Is LogicBrain free?

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

### Do Wastewater Operator Prep or LogicBrain have ads?

Neither Wastewater Operator Prep nor LogicBrain shows ads.

### Which is updated more often, Wastewater Operator Prep or LogicBrain?

Wastewater Operator Prep ships an update every 3 weeks, and LogicBrain every 5 weeks. Most recently, Wastewater Operator Prep was updated on October 12, 2026 and LogicBrain 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.*