# Backflow Buddy vs NFPA CFPS Prep

The clearest difference is price: Backflow Buddy at $1.99 against NFPA CFPS Prep's $9.99. Backflow Buddy also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (12.0 vs 17.0). NFPA CFPS Prep's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Backflow Buddy costs $1.99 and NFPA CFPS Prep $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Backflow Buddy ships an update fortnightly, NFPA CFPS Prep every 2 months. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Backflow Buddy | NFPA CFPS Prep |
| --- | --- | --- |
| Price | **$1.99** | $9.99 |
| 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 | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Paid | — |
| Size | 258 MB | 5 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) | [Yuhsiu Lai](https://appshunter.io/developer/433114647) |

## 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


### NFPA CFPS Prep

[App page](https://appshunter.io/ios/app/nfpa-cfps-prep-exam-mastery/id6764073890)

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

**In-app purchases:** none


## Frequently asked questions

### Is Backflow Buddy free?

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

### Is NFPA CFPS Prep free?

NFPA CFPS Prep costs $9.99, with no in-app purchases.

### Do Backflow Buddy or NFPA CFPS Prep have ads?

Backflow Buddy shows ads; NFPA CFPS Prep does not.

### Which is updated more often, Backflow Buddy or NFPA CFPS Prep?

Backflow Buddy ships an update fortnightly, and NFPA CFPS Prep every 2 months. Most recently, Backflow Buddy was updated on October 24, 2026 and NFPA CFPS Prep on October 31, 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.*