# Backflow Buddy vs Backflow Tester Exam Prep

The clearest difference is price: Backflow Tester Exam Prep at Free against Backflow Buddy's $1.99. Backflow Tester Exam Prep also leads on ads (none vs shown). Backflow Buddy's advantage is in-app purchases (none vs 3) and update cadence (fortnightly vs every 3 months).

Backflow Tester Exam Prep is free to download; Backflow Buddy costs $1.99 up front. Backflow Tester Exam Prep 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, Backflow Tester Exam Prep every 3 months. The most recent releases landed on August 27, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Backflow Buddy | Backflow Tester Exam Prep |
| --- | --- | --- |
| 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 3 months |
| Monetization | Paid | — |
| Best chart rank | **#192** | — |
| Size | 258 MB | 6 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Greg Phillips](https://appshunter.io/developer/1723623593) | [Deeun Inc.](https://appshunter.io/developer/1691824695) |

## What reviewers say

### Backflow Buddy

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

**Currently charting:** #192 Top Paid · Education (US App Store)

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


### Backflow Tester Exam Prep

[App page](https://appshunter.io/ios/app/backflow-tester-exam-prep/id6760266860)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Backflow Tester Pro - Monthly | $9.99 | per month |
| Annual Access | $24.99 | per year |
| Pro - Lifetime Access | $39.99 | one-time |


## Frequently asked questions

### Is Backflow Buddy free?

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

### Is Backflow Tester Exam Prep free?

Backflow Tester Exam Prep is free to download, with in-app purchases available.

### Do Backflow Buddy or Backflow Tester Exam Prep have ads?

Backflow Buddy shows ads; Backflow Tester Exam Prep does not.

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

Backflow Buddy ships an update fortnightly, and Backflow Tester Exam Prep every 3 months. Most recently, Backflow Buddy was updated on August 27, 2026 and Backflow Tester Exam Prep on September 20, 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.*