# PSI Test Prep vs Water Operator Exam Prep 2026

PSI Test Prep and Water Operator Exam Prep 2026 both sit at 4.8 stars, but that hides the real split: 65% of PSI Test Prep's written reviews are positive against 0% of Water Operator Exam Prep 2026's. PSI Test Prep also leads on ratings volume (4.3K vs 17) and update cadence (every 5 weeks vs every 3 months). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. PSI Test Prep sells 10 one-off in-app purchases and Water Operator Exam Prep 2026 sells 8 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for PSI Test Prep against 4.7 for Water Operator Exam Prep 2026. That said, the two scores are not equally well evidenced: PSI Test Prep has 4.3K ratings behind it against 17, so its average is the more settled of the two. Written reviews are what separate them: 65% of PSI Test Prep's written reviews are positive against 0% of Water Operator Exam Prep 2026's.

PSI Test Prep ships an update every 5 weeks, Water Operator Exam Prep 2026 every 3 months. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | PSI Test Prep | Water Operator Exam Prep 2026 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4.3K ratings)](https://appshunter.io/ios/app/psi-test-prep/id1565909858/reviews)** | [4.7 (17 ratings)](https://appshunter.io/ios/app/water-operator-exam-prep-2026/id6741741031/reviews) |
| Number of ratings | **4.3K** | 17 |
| Positive reviews | **65.1% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 102 MB | 55 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Memorang](https://appshunter.io/developer/1011440560) | [YAUHEN BAHDANOVICH](https://appshunter.io/developer/1711932790) |

## What reviewers say

### PSI Test Prep

[App page](https://appshunter.io/ios/app/psi-test-prep/id1565909858)

Prepare for licensure exams with practice questions, detailed progress tracking, and custom study sessions. Access explanations and references to pinpoint areas for improvement before test day. Upgrade for full access to question sets.

**Highlights:** Practice questions, Detailed progress tracking, Custom study sessions, Explanations and references, Topic breakdowns, Calendar countdown

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Life, Accident and Health | $29.99 | one-time |
| National Salesperson | $29.99 | one-time |
| Barber Study-Pack | $29.99 | one-time |
| Cosmetologist Study-Pack | $29.99 | one-time |
| Esthetician Study-Pack | $29.99 | one-time |
| Real Estate Salesperson (New) | $29.99 | one-time |
| Barber Study-Pack | $49.99 | one-time |
| Cosmetologist Study-Pack | $49.99 | one-time |
| Barber Study-Pack | $74.99 | one-time |
| Cosmetologist Study-Pack | $74.99 | one-time |

**What reviewers like**

- 🚀 Excellent preparation for the test
- 👍 Convenient and efficient study tool
- 🚀 Helpful for understanding concepts and questions
- 👍 Provides a better understanding of the exam

**What reviewers complain about**

- 🐛 Questions not formatted the same as the actual test
- 🐛 Questions not up-to-date with the latest exam format
- 🐛 Inconsistent answers and prompts
- 💰 Overpriced for the quality of the content
- 🐛 Glitchy and buggy app experience

**Reported bugs**

- Math questions have incorrect answers
- App goes into a full white screen
- Upgrade to full version not working

**Requested features**

- Update questions to match the latest exam format
- Add state-specific practice options
- Improve customer support and responsiveness


### Water Operator Exam Prep 2026

[App page](https://appshunter.io/ios/app/water-operator-exam-prep-2026/id6741741031)

Prepare for your water treatment operator certification exam with practice questions, realistic simulations, and detailed explanations. Track your progress and stay updated with the latest exam materials to build confidence for exam day and your career.

**Highlights:** Expertly crafted practice questions, Realistic exam simulations, Detailed answer explanations, Customizable study plans, Progress tracking analytics, Regular content updates

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Water Op Weekly Full Access | $7.99 | per 7 days |
| WaterOp Weekly Full Access | $8.99 | per 7 days |
| Water Op Monthly Full Access | $15.99 | per month |
| Water Op Monthly Full Access | $15.99 | per month |
| WaterOp Monthly Full Access | $24.99 | per month |
| WaterOp Monthly Full Access | $24.99 | per month |
| WaterOp Quarterly Full Access | $55.99 | per 3 months |
| WaterOp Quarterly Full Access | $55.99 | per 3 months |


## Frequently asked questions

### Is PSI Test Prep free?

PSI Test Prep is free to download, with in-app purchases available.

### Is Water Operator Exam Prep 2026 free?

Water Operator Exam Prep 2026 is free to download, with in-app purchases available.

### Which has better reviews, PSI Test Prep or Water Operator Exam Prep 2026?

PSI Test Prep is rated higher. PSI Test Prep averages 4.8 out of 5 from 4.3K ratings, while Water Operator Exam Prep 2026 averages 4.7 from 17 ratings.

### Do PSI Test Prep or Water Operator Exam Prep 2026 have ads?

Neither PSI Test Prep nor Water Operator Exam Prep 2026 shows ads.

### Which is updated more often, PSI Test Prep or Water Operator Exam Prep 2026?

PSI Test Prep ships an update every 5 weeks, and Water Operator Exam Prep 2026 every 3 months. Most recently, PSI Test Prep was updated on November 7, 2026 and Water Operator Exam Prep 2026 on November 4, 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.*