Comparison

UDBapp Pro vs HMH Go

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

UDBapp Pro

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
Read full description

Get the app used by hundreds of thousands of marchers, directors, and teachers around the world. 
 Features for Students • Watch the drill animation while listening to the music from any perspective (performer or director).
 • View your individual coordinate sheet for sets in a song or counts in a set.
 • Follow your drill count by count with live updating coordinates.
 • UDB view shows curved and straight-line path information for previous and next sets.
 • Student leadership can access everyone’s drill information.
 • Learn and clean drill in seconds after it's been exported from Pyware by the designer.
 Features for Directors and Staff
 • Tap any performer to view coordinate and UDB view information.
 • Change field perspective (performer/director).
 • Easily add/delete/edit drill files in your ensemble's account directly from your app.
 • Learn and clean drill in seconds after it's been exported from Pyware by the designer.
 Sheet Music Integration • One tap access to Beam 
• Import music and scores from cloud services like Dropbox and Google Drive or take a picture.
 • Sync the drill and music with drill tabs.
• Annotate music with integrated icons and helpful tools.
 Differentiators
 • Phone layout designed for one handed use
 • Easily find your midway points and yard line crossing counts
 • Easily switch between custom views
 Tap ID • Tap ID allows directors to see the performer labels that your students have selected. Simply tap on a performer's dot while viewing the drill to see their name and photo. Multiple students can select a single performer label so directors can easily see and manage alternates, shadows, and primary performers.
 Calendar + Attendance
 • See your full rehearsal and performance schedule, check-in to events, and track attendance throughout the season. • Use Live Attendance to get a real-time view of who is at rehearsal and who is not. 
 Offline Mode • Offline mode allows a director to restrict access to Ultimate Drill Book if selected users are connected to the internet. If not activated, all users will be able to access Ultimate Drill Book even if connected to a WiFi or cellular connection.

About

HMH Go

This app provides K-12 students with on-the-go access to educational content from HMH's core curricula. It allows for offline learning, downloading materials, and utilizing media-rich features like read-along audio and annotations.

Highlights
  • Offline content access
  • Downloadable learning materials
  • Read-along audio
  • Annotations and highlighting
  • Bookmark functionality
  • Content management and filtering
Read full description

HMH Go™ extends K-12 students’ learning beyond the classroom – offering on-the-go learning, regardless of device or connectivity. This app serves as a companion app to HMH’s core curricula on Ed: Your Friend in Learning® – allowing students to download HMH content and work offline. Simply use your HMH® user name and password to access intuitive, connected learning. Check out some of the ways HMH Go™ lets you enjoy a seamless, offline experience: • Provides select content from Ed: Your Friend in Learning® • Offers media-rich features including read-along audio, annotations, highlighting book-marking - online AND offline – with much more to come! • Allows users to download materials from an individual resource to a larger unit of learning • Enables users to easily manage and filter their downloads **Note: HMH Content cannot be purchased via this app, it is an application for educational institutions to access HMH Content they have purchased and licensed from Houghton Mifflin Harcourt.

Screenshots

UDBapp Pro4 screens
HMH Go4 screens

Verdict

The call

The clearest difference is review sentiment: UDBapp Pro at 85% against HMH Go's 22%. UDBapp Pro also leads on rating (4.8 vs 2.1) and ratings volume (2.3K vs 71). HMH Go's advantage is iOS requirement (12.0 vs 16). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

UDBapp Pro holds the better App Store score, 4.8 against 2.1. That said, the two scores are not equally well evidenced: UDBapp Pro has 2.3K ratings behind it against 71, 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 22% of HMH Go's.

UpkeepUpdate frequency

UDBapp Pro ships an update every 6 weeks, HMH Go every 4 months. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.

Scorecard5 real differences · 5 level
UDBapp Pro versus HMH Go: the parameters behind the verdict, then further details
ParameterUDBapp ProHMH Go
PriceFreeFree
Rating4.8 (2.3K ratings) — better2.1 (71 ratings)
Positive reviews85.3% of reviews — better22.2% of reviews
Number of ratings2.3K — better71
Update frequencyEvery 6 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS1612.0 — better
Further details — not scored
Size29 MB21 MB
Age rating9+4+
DeveloperUltimate Drill BookHoughton Mifflin Harcourt

Customer experience

UDBapp Pro

All ratings2,313 ratings
Positive94.8%
Neutral0.7%
Negative4.5%
Written reviews177 reviews
Positive85.3%
Neutral2.8%
Negative11.9%

HMH Go

All ratings71 ratings
Positive26.8%
Neutral4.2%
Negative69.0%
Written reviews18 reviews
Positive22.2%
Neutral5.6%
Negative72.2%

Bugs and requests

UDBapp Pro

Reported bugs

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

Requested features

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

HMH Go

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

UDBapp Pro

No in-app purchases

None

HMH Go

No in-app purchases

Questions

Is UDBapp Pro free?
UDBapp Pro is free to download, with no in-app purchases.
Is HMH Go free?
HMH Go is free to download, with no in-app purchases.
Which has better reviews, UDBapp Pro or HMH Go?
UDBapp Pro is rated higher. UDBapp Pro averages 4.8 out of 5 from 2.3K ratings, while HMH Go averages 2.1 from 71 ratings.
Do UDBapp Pro or HMH Go have ads?
Neither UDBapp Pro nor HMH Go shows ads.
Which is updated more often, UDBapp Pro or HMH Go?
UDBapp Pro ships an update every 6 weeks, and HMH Go every 4 months. Most recently, UDBapp Pro was updated on September 21, 2026 and HMH Go on September 18, 2026.

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