OTO Navi - Sound Navigator

OTO Navi - Sound Navigator

Audio Player for JTP Books

0 ratings
18 reviews
Free

Details

  • Released
  • Updated
  • December 16, 2019
  • January 9, 2026

Features

OTO Navi - Sound Navigator screenshot #1 for iPhone
OTO Navi - Sound Navigator screenshot #2 for iPhone
OTO Navi - Sound Navigator screenshot #3 for iPhone
OTO Navi - Sound Navigator screenshot #4 for iPhone
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About

Access audio content for Japan Times Publishing books directly on your smartphone or tablet. Search for books by keyword or barcode, download audio files, and enjoy playback with helpful study features like skipping and repeating.

Book search by keyword or barcode
Downloadable audio material
Selective section downloading
3-second skip forward/backward
Repeat track, section, or all
Offline playback
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What's New in OTO Navi

1.1.7

January 9, 2026

・Enhanced Book Search ・Improved matching for text format variations (full-width/half-width, kanji/katakana, etc.) ・Supports multi-keyword AND search ・Fixed an issue where continuous playback did not work correctly on some devices

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User reviews

Still a great app in 2026

Does what it says on the tin!! Thanks for making it free!!

Slow

Es demasiado lenta para reaccionar. Hasta me hizo pensar que el teléfono no leía el táctil de la pantalla ya que presionó los audios y tarda todo en responder

Great app for studies etc BUT

There is a bug and now the app is frozen at the title screen. It hasn’t been updated in a while so I don’t know

Hassle-Free

I love how simple this app is. I was expecting to have to provide proof that I purchased the book, but you don’t. All of the audio is there for you. “Well, duh,” you may be thinking. “What would someone get out of contextless audio without the book?” If this were an American textbook company, they’d want an access code, my credit card number, my social security number, my driver’s license, my vehicle’s VIN, my employer’s tax ID; and they’d require I install some separate DRM software and only allow me to access the content for 53 and a half days. It’s a sad world when I’m shocked that an app simply opens and works, but I greatly appreciate it.
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Progress bar missing

In the app, I can't see the progress bar to indicate how far I am into an audio file. If I try skipping back 3 seconds, it resets the audio file. Very annoying. Only happens on MacOS - it's fine on iPhone and iPad.

Developer apps

FAQ

How do I find the audio for my book in OTO Navi?

You can easily search for your book within OTO Navi by entering keywords like the title, author, or ISBN. Alternatively, you can scan the barcode on the back cover of your book to quickly locate it and its associated audio material.

Can I download only specific parts of the audio in OTO Navi?

Yes, OTO Navi allows you to download either the entire audio set for a book or just the specific sections you need. This flexibility helps manage storage space, especially if you only require certain chapters or lessons.

What playback features does OTO Navi offer for studying?

OTO Navi includes several handy playback features to enhance your study experience. You can utilize 3-second skipping forward or backward to quickly review content, and you have the option to repeat a single track, a specific section, or all sections.

Does OTO Navi work offline?

Once you have downloaded the audio material for your books, OTO Navi allows you to listen to it anywhere, anytime, even without an internet connection. This makes it ideal for studying on the go or in areas with limited connectivity.

Is OTO Navi available on Android devices?

Based on the provided information, OTO Navi is supported on iPhone, iPad, and iPod devices. It is not explicitly mentioned if it is available for Android smartphones or tablets.

How often is OTO Navi updated?

The latest version of OTO Navi is 1.1.7, which was last updated on January 9, 2026. While this indicates a recent update, the frequency of future updates is not specified.

What is the age rating for OTO Navi?

OTO Navi has an age rating of 4+, making it suitable for a wide range of users, including younger learners. This rating suggests that the content and interface are designed to be accessible and appropriate for children and adults alike.

Does OTO Navi have ads?

No, OTO Navi does not contain advertisements. The app is free to use and does not display any in-app ads, providing an uninterrupted listening experience for users.