OTO Navi - Sound Navigator Android
OTO Navi - Sound Navigator is #102 in Education Free on Google Play in Japan and charting in 1 of 15 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
DeveloperThe Japan Times Publishing
CategoryEducation
PriceFree
Released
Installs100k+
Rating★ 3.6 (258)
Updated
Content ratingEveryone
Rating
3.6 ★
258 ratings
Measured
Best rank now
#102
Education FreeMeasured
OTO Navi - Sound Navigator on Google Play
App details
App ID
jp.co.japantimes.jtpaudioplayer
Publisher
The Japan Times Publishing
Content rating
Everyone
OTO Navi - Sound Navigator downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Where OTO Navi - Sound Navigator's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks on Google Play
Every top 200 chart it appears in across 15 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | EducationFree | #102 |
Apps near OTO Navi - Sound Navigator on the chart
Education Free, around #102.
Ratings
Google Play, worldwide.
Rating
3.6 ★
258 ratings
Measured
Ratings
258
Measured
Written reviews
16
Measured
About OTO Navi - Sound Navigator
OTO Navi is an app for listening to audio material provided with books published by The Japan Times Publishing, Ltd. Before, this material was available only through supplementary CDs or MP3 file downloads, but now OTO Navi lets you use your smartphone or tablet to listen to it anywhere, anytime!
●How to use OTO Navi●
It’s three easy steps: 1. Search for the book / 2. Download the audio material / 3. Play it!
1. Search for the book
You can easily search the database for the target book by either entering a keyword (title, author, or ISBN) or scanning the bar code on the book you own. If searching by bar code, scan the upper bar code of the two printed on the book’s back cover.
2. Download the audio material
You can download either the full set of audio material for the book, or just the sections you want. If downloading the full set, you may want to use a WiFi connection.
3. Play it!
OTO Navi offers several handy playback features to aid your studies, including 3-second skipping back/forward and repeating of a single track, a single section, or all sections.
●How to use OTO Navi●
It’s three easy steps: 1. Search for the book / 2. Download the audio material / 3. Play it!
1. Search for the book
You can easily search the database for the target book by either entering a keyword (title, author, or ISBN) or scanning the bar code on the book you own. If searching by bar code, scan the upper bar code of the two printed on the book’s back cover.
2. Download the audio material
You can download either the full set of audio material for the book, or just the sections you want. If downloading the full set, you may want to use a WiFi connection.
3. Play it!
OTO Navi offers several handy playback features to aid your studies, including 3-second skipping back/forward and repeating of a single track, a single section, or all sections.
What's new in 1.1.7
・Enhanced Book Search
・Improved matching for text format variations (full-width/half-width, kanji/katakana, etc.)
・Supports multi-keyword AND search
・Author name search added
・Fixed an issue where continuous playback did not work correctly on some devices
・Improved matching for text format variations (full-width/half-width, kanji/katakana, etc.)
・Supports multi-keyword AND search
・Author name search added
・Fixed an issue where continuous playback did not work correctly on some devices