Comparison

onIMT vs WHAT MUSEUM

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

Head to head
About

onIMT

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• What Is “onIMT”? This Sound Layer application is designed for your ears to enjoy the Intermediatheque. Various audio contents are produced according to the Intermediatheque’s exhibition space. Each visitor is free to choose his own theme (layer). All you have to do is put on your earphones, select your layer and press “on.” Based on your location, audio contents will be played automatically. Your ears can then enjoy a new museum experience, without your having to look at the application interface anymore. • What Is a Sound Layer? Sound Layer is an innovative concept and technology developing a multi-layered experience of augmented reality based on sound. Whereas several contents cannot coexist in real space, with the concept of Sound Layer, various audio contents are accumulated on as many layers in a single location, making it possible for each visitor to select what he wants to listen to at a given time on a given location. Furthermore, by introducing a specific system supported by the latest technology, it becomes possible to play audio contents automatically based on location information provided by beacons positioned throughout the museum, without having to manipulate any buttons to switch from one content to the other. The University Museum, the University of Tokyo in cooperation with THD Inc. established the development of the Sound Layer application “onIMT” as a key project transforming our perception of the world through sound, and explores the possibilities of Sound Layer within museums, with the Intermediatheque as a platform for experimentation. The Sound Layer application for museums is an original application jointly developed by the University Museum, the University of Tokyo (UMUT) and THD Inc. “onIMT” is a content application that implements the Sound Layer technology within the Intermediatheque. • What Is the Intermediatheque? The Intermediatheque is an admission-free museum operated by Japan Post Co. Ltd. and the University Museum, the University of Tokyo. This interdisciplinary facility is devoted to cultural experimentation through the fusion of every means of expression. It is located in the former Tokyo Central Post Office, a historical building representative of Showa modernism architecture. One of the Intermediatheque’s highlights is the original design concept of its permanent exhibition of scientific and cultural heritage accumulated by the University of Tokyo since its foundation in 1877. Special exhibitions and events also present the fruits of contemporary scientific research and artistic expression in harmony with the permanent exhibition.

About

WHAT MUSEUM

Stay updated on current exhibitions and access a free audio guide during your visit. Exclusive content is available for app users, enhancing your museum experience.

Highlights
  • Exhibition updates
  • Free audio guide
  • Exclusive content
  • Location-based services
  • Artwork information
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This app will keep you updated on information regarding the museum, including the current exhibition, and will allow you to listen to our free audio guide during your visit. Also, special content will be available exclusively for those who download the app. *Additional notes -This app will allow the use of location information. -The audio guide will be available upon arriving at the museum. -Reentry is not permitted. Please bring your smartphone device with you inside the museum. -The audio guide does not cover every artwork on display. 【About WHAT MUSEUM】 WHAT MUSEUM opened in December 2020 in Tennoz, Tokyo. WHAT MUSEUM is an art and culture facility that exhibits invaluable artworks stored at Warehouse TERRADA by artists and collectors. We have used our unique insight as a warehousing company to explore what an art facility should be. The concept we arrived at was “opening our warehouse to offer viewers an opportunity to see art that is rarely open to the public.” The thoughts and intentions of the artists and those of the collectors and their treasured works are displayed concomitantly. We have created a venue to encounter such art. The name WHAT (WAREHOUSE OF ART TERRADA) suggests the cultural value that glows quietly within the walls of a warehouse, as we exhibit two-dimensional and three-dimensional artworks, architectural models, photographs, videos, literature, and installations. These diverse art forms are curated and exhibited in our museum from a perspective unlike any other that only a warehouse company can offer.

Screenshots

onIMT4 screens
WHAT MUSEUM4 screens

Verdict

The call

The clearest difference is update cadence: WHAT MUSEUM at every 2 months against onIMT's every 5 months. WHAT MUSEUM also leads on iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support 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.

UpkeepUpdate frequency

onIMT ships an update every 5 months, WHAT MUSEUM every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 6 level
onIMT versus WHAT MUSEUM: the parameters behind the verdict, then further details
ParameteronIMTWHAT MUSEUM
PriceFreeFree
Positive reviews—57.1% of reviews
Update frequencyEvery 5 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size31 MB45 MB
Age rating4+12+
DeveloperTHD Inc.WAREHOUSE TERRADA CO.,LTD.

In-app purchases

None

onIMT

No in-app purchases

None

WHAT MUSEUM

No in-app purchases

Questions

Is onIMT free?
onIMT is free to download, with no in-app purchases.
Is WHAT MUSEUM free?
WHAT MUSEUM is free to download, with no in-app purchases.
Do onIMT or WHAT MUSEUM have ads?
Neither onIMT nor WHAT MUSEUM shows ads.
Which is updated more often, onIMT or WHAT MUSEUM?
onIMT ships an update every 5 months, and WHAT MUSEUM every 2 months. Most recently, onIMT was updated on November 2, 2026 and WHAT MUSEUM on November 3, 2026.

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