# UDBapp Pro vs PercussionIQ

The clearest difference is in-app purchases: UDBapp Pro at none against PercussionIQ's 5. UDBapp Pro also leads on ratings volume (2.3K vs 15) and device support (3 vs 1). PercussionIQ's advantage is rating (5.0 vs 4.8) and review sentiment (100% vs 85%). On price and ads there is nothing between them.

Both are free to download. PercussionIQ sells 5 one-off in-app purchases. UDBapp Pro asks for nothing beyond the download.

PercussionIQ holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: UDBapp Pro has 2.3K ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 85% of UDBapp Pro's written reviews are positive against 100% of PercussionIQ's.

## The numbers

| Metric | UDBapp Pro | PercussionIQ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (2.3K ratings)](https://appshunter.io/ios/app/udbapp-pro/id1455826724/reviews) | **[5.0 (15 ratings)](https://appshunter.io/ios/app/percussioniq/id6744618184/reviews)** |
| Number of ratings | **2.3K** | 15 |
| Positive reviews | 85.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | **Free** | Free with in-app purchases |
| Size | 29 MB | 55 MB |
| Requires iOS | **16** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Ultimate Drill Book](https://appshunter.io/developer/1455826723) | [Percussion IQ, LLC](https://appshunter.io/developer/1808479577) |

## What reviewers say

### UDBapp Pro

[App page](https://appshunter.io/ios/app/udbapp-pro/id1455826724)

This app helps marching band members, directors, and teachers learn and manage drill formations. It offers animated drill views, coordinate sheets, music integration, and attendance tracking for seamless rehearsal and performance preparation.

**Highlights:** Animated drill views with music, Individual coordinate sheets, Live coordinate tracking, Sheet music integration, Attendance tracking, Tap ID for performer management, Offline mode

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Helpful for learning drill
- 🚀 Efficient drill learning process
- 📱 Convenient digital format
- 🎨 Customizable user experience
- 🤖 Precise dot tracking

**What reviewers complain about**

- 🐛 Occasional glitches and bugs
- 🔍 Limited customization options
- 📱 Requires all students to have compatible devices
- 🕰️ Slow loading times
- 🔋 High battery consumption

**Reported bugs**

- Drill files disappearing after updates
- Attendance tracking issues
- Crashes when adding notes
- Drill visualization jumping between sets

**Requested features**

- Apple Watch integration
- Ability to create custom drill designs
- Improved note-taking functionality
- Offline drill playback
- Tempo adjustment for drill and music


### PercussionIQ

[App page](https://appshunter.io/ios/app/percussioniq/id6744618184)

This app offers advanced rhythmic training for percussionists using a grid methodology and intelligent practice tools. It helps users master complex polyrhythms, metric modulations, and rhythmic patterns with interactive features and a comprehensive library.

**Highlights:** GridLab Studio for custom rhythmic grids, Metric Modulation Calculator, Drum Smart Series library, IQ Methodology training, Advanced rhythmic variations, Save and load custom grids

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PercussionIQ | $2.99 | one-time |
| DSS World Class | $9.99 | one-time |
| DSS Open Class | $9.99 | one-time |
| DSS A-Class | $9.99 | one-time |
| Drum Smart Series | $29.99 | one-time |


## Frequently asked questions

### Is UDBapp Pro free?

UDBapp Pro is free to download, with no in-app purchases.

### Is PercussionIQ free?

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

### Which has better reviews, UDBapp Pro or PercussionIQ?

PercussionIQ is rated higher. UDBapp Pro averages 4.8 out of 5 from 2.3K ratings, while PercussionIQ averages 5.0 from 15 ratings.

### Do UDBapp Pro or PercussionIQ have ads?

Neither UDBapp Pro nor PercussionIQ shows ads.

---

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