# IAPMO Codes vs Backflow Buddy

IAPMO Codes and Backflow Buddy both sit at 3.8 stars, but that hides the real split: 50% of Backflow Buddy's written reviews are positive against 0% of IAPMO Codes's. Backflow Buddy also leads on update cadence (fortnightly vs every 7 months) and iOS requirement (12.0 vs 15.0). IAPMO Codes's advantage is price (Free vs $1.99) and ads (none vs shown). On rating, ratings volume, in-app purchases and device support there is nothing between them.

IAPMO Codes is free to download; Backflow Buddy costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 3.8 for IAPMO Codes against 3.7 for Backflow Buddy. Both are backed by a comparable volume of ratings — 6 and 3 respectively. Written reviews are what separate them: 0% of IAPMO Codes's written reviews are positive against 50% of Backflow Buddy's.

IAPMO Codes ships an update every 7 months, Backflow Buddy fortnightly. The most recent releases landed on October 5, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | IAPMO Codes | Backflow Buddy |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[3.8 (6 ratings)](https://appshunter.io/ios/app/iapmo-codes/id1457481184/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/backflow-buddy/id6475203858/reviews) |
| Number of ratings | **6** | 3 |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | **Free** | Paid |
| Size | 22 MB | 258 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [IAPMO](https://appshunter.io/developer/1455422752) | [Greg Phillips](https://appshunter.io/developer/1723623593) |

## What reviewers say

### IAPMO Codes

[App page](https://appshunter.io/ios/app/iapmo-codes/id1457481184)

Access and manage your purchased IAPMO codes, including the UPC, UMC, and others. Make annotations, record voice notes, and view content offline. Stay informed with code errata, committee information, and breaking news.

**Highlights:** View purchased IAPMO codes, Offline access, Make annotations, Voice recordings, Access code errata, View development timeline, Direct access to engineering staff

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is IAPMO Codes free?

IAPMO Codes is free to download, with no in-app purchases.

### Is Backflow Buddy free?

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

### Which has better reviews, IAPMO Codes or Backflow Buddy?

IAPMO Codes is rated higher. IAPMO Codes averages 3.8 out of 5 from 6 ratings, while Backflow Buddy averages 3.7 from 3 ratings.

### Do IAPMO Codes or Backflow Buddy have ads?

Backflow Buddy shows ads; IAPMO Codes does not.

### Which is updated more often, IAPMO Codes or Backflow Buddy?

IAPMO Codes ships an update every 7 months, and Backflow Buddy fortnightly. Most recently, IAPMO Codes was updated on October 5, 2026 and Backflow Buddy on September 26, 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.*