Comparison

Top Hat vs IUDM

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

Head to head
About

Top Hat

This app enhances your learning experience by providing interactive textbooks, in-class response systems, and discussion forums. Engage with course content and professors through dynamic resources and assessments, both inside and outside the classroom.

Highlights
  • Interactive textbooks
  • In-class response system
  • Professor and peer discussions
  • Lecture slide following
  • Quizzes and polls
  • Graded and non-graded homework
Features
Currently charting
Read full description

Top Hat is the perfect companion app to our comprehensive assessment platform that helps you learn better before, during and after class. Top Hat makes learning fun and engaging (seriously!) and sets you up for success, helping you connect with your professors, your peers and the content you’re learning in and out of the classroom. Here’s what Top Hat offers you: Compelling resources, delivered on your smartphone or laptop: • Follow your prof’s lecture slides on your own device • Contribute in class with an easy-to-use response system that’s always with you • Participate with your profs and peers using in-app discussions Content tailored to your course: • Experience dynamic, interactive textbooks loaded up with images, videos, audio clips and more • Read your digital materials from anywhere and keep them forever Quizzes, tests and polls that improve learning comprehension: • Challenge yourself by taking polls and quizzes on your own devices • Improve your knowledge retention with interactive assessment elements • Check for gaps in your understanding with graded and non-graded homework and short quizzes Thanks for using Top Hat. As you experience the app, we’d love to get your feedback: support@tophat.com or follow us on Instagram, Twitter or Facebook @TopHat

About

IUDM

This app serves as a central hub for Indiana University Dance Marathon participants. It provides access to important announcements, event schedules, fundraising tools, and information about the organization's mission. It complements the DonorDrive account for registered users.

Highlights
  • Important announcements
  • Upcoming event schedules
  • Fundraising resources
  • Learn about IUDM's mission
  • Connect with other participants
Features
Read full description

The official Indiana University Dance Marathon (IUDM) app. Committee members, chairs, and external dancers can stay connected with everything IUDM in one place. View important announcements and upcoming events, find fundraising resources, learn more about IUDM's mission, and more. The IUDM app is designed to complement your DonorDrive account, not replace it. Before signing in to the app, all participants must first register for IUDM through DonorDrive at iudm.org/register. Indiana University Dance Marathon (IUDM) is Indiana University's largest student organization and the second-largest student-run philanthropy in the world. Since 1991, IUDM has raised more than $59 million to support Riley Hospital for Children and the IU School of Medicine Wells Center for Pediatric Research. Each year, nearly 3,000 students come together for a 36-hour Dance Marathon, united For The Kids.

Screenshots

Top Hat4 screens
IUDM4 screens

Verdict

The call

The clearest difference is rating: IUDM at 5.0 against Top Hat's 4.6. IUDM also leads on update cadence (weekly vs fortnightly) and iOS requirement (15.0 vs 17.0). Top Hat's advantage is ratings volume (23K vs 3) and chart position (#202 vs unranked). 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

IUDM holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Top Hat has 23K ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Top Hat ships an update fortnightly, IUDM weekly. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 6 level
Top Hat versus IUDM: the parameters behind the verdict, then further details
ParameterTop HatIUDM
PriceFreeFree
Rating4.6 (23K ratings)5.0 (3 ratings) — better
Positive reviews15.0% of reviews—
Number of ratings23K — better3
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank#202 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size152 MB21 MB
Age rating4+4+
DeveloperTop Hat MonocleIndiana University Dance Marathon, LLC

Customer experience

Top Hat

All ratings23,096 ratings
Positive93.0%
Neutral3.2%
Negative3.8%
Written reviews200 reviews
Positive15.0%
Neutral8.5%
Negative76.5%

IUDM

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Top Hat

Reported bugs

3 issues
  • Answers not registering correctly
  • Slides not loading properly on mobile devices
  • Inconsistent performance across platforms

Requested features

3 requests
  • Add page numbers and search functionality to ebooks
  • Improve syncing between mobile and web versions
  • Allow more flexible location settings for attendance

IUDM

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Top Hat

No in-app purchases

None

IUDM

No in-app purchases

Questions

Is Top Hat free?
Top Hat is free to download, with no in-app purchases.
Is IUDM free?
IUDM is free to download, with no in-app purchases.
Which has better reviews, Top Hat or IUDM?
IUDM is rated higher. Top Hat averages 4.6 out of 5 from 23K ratings, while IUDM averages 5.0 from 3 ratings.
Do Top Hat or IUDM have ads?
Neither Top Hat nor IUDM shows ads.
Which is updated more often, Top Hat or IUDM?
Top Hat ships an update fortnightly, and IUDM weekly. Most recently, Top Hat was updated on November 6, 2026 and IUDM on November 5, 2026.

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