# UDBapp Pro vs SLW Centennial HS

The clearest difference is review sentiment: UDBapp Pro at 85% against SLW Centennial HS's 17%. UDBapp Pro also leads on rating (4.8 vs 2.2) and ratings volume (2.4K vs 113). SLW Centennial HS's advantage is iOS requirement (13.0 vs 16). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UDBapp Pro holds the better App Store score, 4.8 against 2.2. That said, the two scores are not equally well evidenced: UDBapp Pro has 2.4K ratings behind it against 113, 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 17% of SLW Centennial HS's.

UDBapp Pro ships an update every 6 weeks, SLW Centennial HS monthly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | UDBapp Pro | SLW Centennial HS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (2.4K ratings)](https://appshunter.io/ios/app/udbapp-pro/id1455826724/reviews)** | [2.2 (113 ratings)](https://appshunter.io/ios/app/slw-centennial-hs/id1584982427/reviews) |
| Number of ratings | **2.4K** | 113 |
| Positive reviews | **85.3% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free | Free |
| Size | 29 MB | 70 MB |
| Requires iOS | 16 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Ultimate Drill Book](https://appshunter.io/developer/1455826723) | [St. Lucie Public Schools](https://appshunter.io/developer/1584982429) |

## 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


### SLW Centennial HS

[App page](https://appshunter.io/ios/app/slw-centennial-hs/id1584982427)

This app connects parents, students, teachers, and administrators with essential school resources, news, and information. It provides quick access to important updates, interactive tools like event calendars, and online resources to keep the school community informed.

**Highlights:** School news updates, Interactive event calendars, Access to online resources, Stay connected with the school community, Information for parents, students, and staff

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

**In-app purchases:** none


## Frequently asked questions

### Is UDBapp Pro free?

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

### Is SLW Centennial HS free?

SLW Centennial HS is free to download, with no in-app purchases.

### Which has better reviews, UDBapp Pro or SLW Centennial HS?

UDBapp Pro is rated higher. UDBapp Pro averages 4.8 out of 5 from 2.4K ratings, while SLW Centennial HS averages 2.2 from 113 ratings.

### Do UDBapp Pro or SLW Centennial HS have ads?

Neither UDBapp Pro nor SLW Centennial HS shows ads.

### Which is updated more often, UDBapp Pro or SLW Centennial HS?

UDBapp Pro ships an update every 6 weeks, and SLW Centennial HS monthly. Most recently, UDBapp Pro was updated on October 23, 2026 and SLW Centennial HS on October 24, 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.*