# IAPMO Codes vs PlumbPro

The clearest difference is review sentiment: PlumbPro at 100% against IAPMO Codes's 0%. PlumbPro also leads on rating (5.0 vs 3.8) and update cadence (weekly vs every 7 months). IAPMO Codes's advantage is in-app purchases (none vs 2). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. PlumbPro sells 2 in-app purchases, starting at $19.99 per month. IAPMO Codes asks for nothing beyond the download.

PlumbPro holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 6 and 5 respectively. Written reviews point the same way: 0% of IAPMO Codes's written reviews are positive against 100% of PlumbPro's.

IAPMO Codes ships an update every 7 months, PlumbPro weekly. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | IAPMO Codes | PlumbPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (6 ratings)](https://appshunter.io/ios/app/iapmo-codes/id1457481184/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/plumbpro-plumbing-exam-prep/id6759473027/reviews)** |
| Number of ratings | **6** | 5 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 22 MB | 44 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IAPMO](https://appshunter.io/developer/1455422752) | [Ryan Kean](https://appshunter.io/developer/1878828351) |

## 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


### PlumbPro

[App page](https://appshunter.io/ios/app/plumbpro-plumbing-exam-prep/id6759473027)

Prepare for your Journeyman or Master Plumber exam with comprehensive practice questions, realistic simulations, and detailed code references. Track your progress, study offline, and utilize smart tools to master weak areas.

**Highlights:** 1,440+ practice questions, Realistic exam simulations, Complete IPC code reference, Smart study tools (Weak Area Practice, Spaced Repetition), Progress tracking, Offline study mode

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $19.99 | per month |
| Pro Annual | $124.99 | per year |


## Frequently asked questions

### Is IAPMO Codes free?

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

### Is PlumbPro free?

PlumbPro is free to download, with in-app purchases available.

### Which has better reviews, IAPMO Codes or PlumbPro?

PlumbPro is rated higher. IAPMO Codes averages 3.8 out of 5 from 6 ratings, while PlumbPro averages 5.0 from 5 ratings.

### Do IAPMO Codes or PlumbPro have ads?

Neither IAPMO Codes nor PlumbPro shows ads.

### Which is updated more often, IAPMO Codes or PlumbPro?

IAPMO Codes ships an update every 7 months, and PlumbPro weekly. Most recently, IAPMO Codes was updated on November 2, 2026 and PlumbPro on November 5, 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.*