OTO Navi - Sound Navigator: iPhone vs Android
OTO Navi - Sound Navigator by The Japan Times Publishing, Ltd. is on both the App Store and Google Play. Here are both versions together: downloads, users, revenue, ratings and chart positions, store by store with totals.
Rating
3.4 ★
314 ratings, both stores
Measured
Best rank now
#68
iPhone · 
Education Free
Education FreeMeasured
App Store
App details
App ID
1490391845
Publisher
The Japan Times Publishing, Ltd.
Content rating
4+
Google Play
App details
App ID
jp.co.japantimes.jtpaudioplayer
Publisher
The Japan Times Publishing
Content rating
Everyone
OTO Navi - Sound Navigator downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| iPhone | – | 1k+ |
| Google Play | – | 100k+ Measured |
| Total | – | 100k+ Confidence |
How this is calculated
iPhone: chart positions and rating growth per country, anchored on its own Android downloads; lifetime from ratings worldwide × installs per rating. Google Play: the daily change in its exact install count. The total adds every store.
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
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
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 now
Both stores, across every country we track.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 2.3 ★ | 56 |
| Google Play | 3.6 ★ | 258 16 written reviews |
| Both stores | 3.4 ★ weighted by ratings | 314 |
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.
*For more details, instructions, FAQ, please refer to the following link. https://bookclub.japantimes.co.jp/en/book/b491927.html
*Please purchase the corresponding books at bookstores.
●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.
*For more details, instructions, FAQ, please refer to the following link. https://bookclub.japantimes.co.jp/en/book/b491927.html
*Please purchase the corresponding books at bookstores.
OTO Navi - Sound Navigator iPhone
OTO Navi
OTO Navi - Sound Navigator is #68 in Education Free in Japan and charting in 1 of 24 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
DeveloperThe Japan Times Publishing, Ltd.
CategoryEducation
PriceFree
Released
Rating★ 2.3 (56)
Version1.1.7
Age rating4+
First seen by us 25 Sep 2026
25 Sep 2026Installs (est.)1k+ worldwide
Rating
2.3 ★
56 ratings
Measured
Best rank now
#68
Education FreeMeasured
OTO Navi - Sound Navigator on the App Store
App details
App ID
1490391845
Publisher
The Japan Times Publishing, Ltd.
Content rating
4+
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
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. 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
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
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 now
Every top chart it appears in across 24 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | EducationFree | #68 |
Apps near OTO Navi - Sound Navigator on the chart
Education Free, around #68.
Ratings
App Store, worldwide.
Rating
2.3 ★
56 ratings
Measured
Ratings
56
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.
*For more details, instructions, FAQ, please refer to the following link. https://bookclub.japantimes.co.jp/en/book/b491927.html
*Please purchase the corresponding books at bookstores.
●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.
*For more details, instructions, FAQ, please refer to the following link. https://bookclub.japantimes.co.jp/en/book/b491927.html
*Please purchase the corresponding books at bookstores.
Latest updates
1.1.7
・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
More from The Japan Times Publishing, Ltd.
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