# PMI Official vs Classroom Volume Buddy

The clearest difference is price: PMI Official at Free against Classroom Volume Buddy's $0.99. PMI Official also leads on ratings volume (451 vs 1). On rating, ads, in-app purchases and device support there is nothing between them.

PMI Official is free to download; Classroom Volume Buddy costs $0.99 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 — 4.9 for PMI Official against 5.0 for Classroom Volume Buddy. That said, the two scores are not equally well evidenced: PMI Official has 451 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | PMI Official | Classroom Volume Buddy |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [4.9 (451 ratings)](https://appshunter.io/ios/app/pmi-official/id6744980359/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/classroom-volume-buddy/id6794152261/reviews)** |
| Number of ratings | **451** | 1 |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | **Free** | Paid |
| Size | 110 MB | 12 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PROJECT MANAGEMENT INSTITUTE, INC](https://appshunter.io/developer/562906501) | [Ashley Schaub](https://appshunter.io/developer/6794152263) |

## What reviewers say

### PMI Official

[App page](https://appshunter.io/ios/app/pmi-official/id6744980359)

Manage your professional certification, track and report continuing education units, and access an AI-powered project coach. This app helps you maintain your credentials, find learning opportunities, and get expert guidance for project success.

**Highlights:** Professional certification maintenance, PDU tracking and reporting, AI-powered project coach (PMI Infinity™), Course search and filtering, Renewal reminders, Single PMI login

**In-app purchases:** none


### Classroom Volume Buddy

[App page](https://appshunter.io/ios/app/classroom-volume-buddy/id6794152261)

This app assists educators in controlling classroom noise levels with an on-device monitor and interactive rewards. Teachers can set noise thresholds and monitor student progress visually. The timer automatically pauses when noise levels exceed the limit, and audio is never recorded.

**Highlights:** On-device volume monitoring, Customizable classroom rewards, Real-time progress tracking for students, Automatic timer pause for excessive noise, Audio privacy (never recorded or uploaded)

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

**In-app purchases:** none


## Frequently asked questions

### Is PMI Official free?

PMI Official is free to download, with no in-app purchases.

### Is Classroom Volume Buddy free?

Classroom Volume Buddy costs $0.99, with no in-app purchases.

### Which has better reviews, PMI Official or Classroom Volume Buddy?

Classroom Volume Buddy is rated higher. PMI Official averages 4.9 out of 5 from 451 ratings, while Classroom Volume Buddy averages 5.0 from 1 ratings.

### Do PMI Official or Classroom Volume Buddy have ads?

Neither PMI Official nor Classroom Volume Buddy shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*