# Backflow Buddy vs Plumbing Exam Prep 2026

The clearest difference is price: Plumbing Exam Prep 2026 at Free against Backflow Buddy's $1.99. Plumbing Exam Prep 2026 also leads on ads (none vs shown). Backflow Buddy's advantage is in-app purchases (none vs 3) and update cadence (fortnightly vs every 4 months). On device support there is nothing between them.

Plumbing Exam Prep 2026 is free to download; Backflow Buddy costs $1.99 up front. Plumbing Exam Prep 2026 sells 3 in-app purchases, starting at $9.99 per month. Backflow Buddy asks for nothing beyond the download.

Backflow Buddy ships an update fortnightly, Plumbing Exam Prep 2026 every 4 months. The most recent releases landed on November 4, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Backflow Buddy | Plumbing Exam Prep 2026 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/backflow-buddy/id6475203858/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Paid | — |
| Size | 258 MB | 3 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Greg Phillips](https://appshunter.io/developer/1723623593) | [MD Shahariar Nazim Joy](https://appshunter.io/developer/1893961943) |

## What reviewers say

### Backflow Buddy

[App page](https://appshunter.io/ios/app/backflow-buddy/id6475203858)

This app simulates backflow prevention devices and their testing procedures. It offers customizable water pressure simulations and quizzes to prepare users for certification exams.

**Highlights:** RPZ and Test Gauge simulation, Double Check and Test Gauge simulation, Customizable internal water pressure, Differential pressure gauge simulation, Quiz preparation with multiple lengths, Randomized industry-expert questions, Comprehensive quiz results

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

**In-app purchases:** none


### Plumbing Exam Prep 2026

[App page](https://appshunter.io/ios/app/plumbing-exam-prep-2026/id6783826632)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Yearly | $49.99 | per year |
| Premium Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Backflow Buddy free?

Backflow Buddy costs $1.99, with no in-app purchases.

### Is Plumbing Exam Prep 2026 free?

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

### Do Backflow Buddy or Plumbing Exam Prep 2026 have ads?

Backflow Buddy shows ads; Plumbing Exam Prep 2026 does not.

### Which is updated more often, Backflow Buddy or Plumbing Exam Prep 2026?

Backflow Buddy ships an update fortnightly, and Plumbing Exam Prep 2026 every 4 months. Most recently, Backflow Buddy was updated on November 4, 2026 and Plumbing Exam Prep 2026 on November 7, 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.*