OTO Navi Downloads & RevenueOTO Navi - Sound Navigator · App Store & Google Play
OTO Navi - Sound Navigator by The Japan Times Publishing, Ltd. is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
OTO Navi - Sound Navigator update history & changes
Last change · 12 events since 15 Dec 2019Full timeline ↓🔎AndroidTop 10 for “navi”📦iOSUpdated to version 1.1.9📦iOSFirst update in 292 days📈AndroidEntered the top 100🆕AndroidFirst spotted by AppInsider🆕iOSFirst spotted by AppInsider📦AndroidVersion 1.1.7🆕iOSReleased on the App Store🆕AndroidReleased on Google Play
Full timeline · 12 events
- 🔎OTO Navi - Sound Navigator reached Top 10 for “navi”Android#10 in Netherlands search · popularity 76
- 📦OTO Navi - Sound Navigator updated to version 1.1.9iOS・Improved the app so that, after a restart, it automatically returns to the playback screen where you left off.
・Fixed other minor bugs. - ✏️OTO Navi - Sound Navigator: needs a newer iOSiOSiOS 13.0 → iOS 15.0
- 📦OTO Navi - Sound Navigator: first update in 292 daysiOS
- 📦OTO Navi - Sound Navigator updated to version 1.1.8iOS・再起動後に、途中まで再生していた画面へ自動で戻るよう改善しました。
・その他、軽微な不具合を修正しました。 - 📈OTO Navi - Sound Navigator entered the top 100AndroidTop Free · Education · JP
- 🆕OTO Navi - Sound Navigator first spotted by AppInsiderAndroidJapan
- 🆕OTO Navi - Sound Navigator first spotted by AppInsideriOS#75 in Top Free · Education · Japan
- 📦OTO Navi - Sound Navigator version 1.1.7iOS・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 - 📦OTO Navi - Sound Navigator version 1.1.7Android・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… more - 🆕OTO Navi - Sound Navigator released on the App StoreiOS
- 🆕OTO Navi - Sound Navigator released on Google PlayAndroid
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
3.4 ★
328 ratings, both stores
Measured
Best rank now
#74
App Store · 
Education Free
Education FreeMeasured
New ratings a week
3.4
both stores, 4-week average
Measured
App Store
App details
App ID
1490391845
Publisher
The Japan Times Publishing, Ltd.
Publisher country
Japan
On the store since
Dec 2019
6 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
2
EN JA
Size
32 MB
Also listed in
Books
Google Play
App details
App ID
jp.co.japantimes.jtpaudioplayer
Publisher
THE JAPAN TIMES PUBLISHING, LTD.
Publisher country
Japan
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 |
|---|---|---|
| App Store | – | 10k+ |
| Google Play | – | 100k+ Measured |
| Total | – | 100k+ Confidence |
How this is calculated
App Store: 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.
| Store | Best rank | Charting in | US Top Free | US Top Grossing |
|---|---|---|---|---|
| App Store | #74 Education Free | 1 of 30 countries | – | – |
| Google Play | #108 Education Free | 1 of 23 countries | – | – |
Full chart lists: App Store · Google Play.
Review momentum
ⓘ How we measure thisApp Store
New ratings a week
under 1
4-week average
Lifetime rating
2.3★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
57/100
faster than 62% of Education apps
Google Play
New ratings a week
2.6
4-week average
Lifetime rating
4.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
28/100
faster than 13% of Education apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 2.3 ★ | 64 |
| Google Play | 3.6 ★ | 264 16 written reviews |
| Both stores | 3.4 ★ weighted by ratings | 328 |
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 App Store
OTO Navi
OTO Navi - Sound Navigator is #74 in Education Free in Japan and charting in 1 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperThe Japan Times Publishing, Ltd.
CategoryEducation
PriceFree
Released
Rating★ 2.3 (64)
Version1.1.9
Age rating4+
First seen by us 25 Sep 2026
25 Sep 2026Installs (est.)10k+ worldwide
Rating
2.3 ★
64 ratings
Measured
Best rank now
#74
Education FreeMeasured
OTO Navi - Sound Navigator on the App Store
App details
App ID
1490391845
Publisher
The Japan Times Publishing, Ltd.
Publisher country
Japan
On the store since
Dec 2019
6 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
2
EN JA
Size
32 MB
Also listed in
Books
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. App Store 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 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | EducationFree | #74 |
Apps near OTO Navi - Sound Navigator on the chart
Education Free, around #74.
Ratings
App Store, worldwide.
Rating
2.3 ★
64 ratings
Measured
Ratings
64
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
2.3★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
57/100
faster than 62% of Education apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
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
1.1.9
・Improved the app so that, after a restart, it automatically returns to the playback screen where you left off.
・Fixed other minor bugs.
1.1.8
・再起動後に、途中まで再生していた画面へ自動で戻るよう改善しました。
・その他、軽微な不具合を修正しました。
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
Store changes
What OTO Navi - Sound Navigator changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Needs a newer iOS
iOS 13.0 → iOS 15.0
More from The Japan Times Publishing, Ltd.
OTO Navi - Sound Navigator Android
OTO Navi - Sound Navigator is #108 in Education Free on Google Play in Japan and charting in 1 of 23 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperThe Japan Times Publishing
CategoryEducation
PriceFree
Released
Installs100k+
Rating★ 3.6 (264)
Updated
Content ratingEveryone
Rating
3.6 ★
264 ratings
Measured
Best rank now
#108
Education FreeMeasured
New ratings a week
2.6
Google Play, 4-week average
Measured
OTO Navi - Sound Navigator on Google Play
App details
App ID
jp.co.japantimes.jtpaudioplayer
Publisher
THE JAPAN TIMES PUBLISHING, LTD.
Publisher country
Japan
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 23 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | EducationFree | #108 |
Apps near OTO Navi - Sound Navigator on the chart
Education Free, around #108.
Ratings
Google Play, worldwide.
Rating
3.6 ★
264 ratings
Measured
Ratings
264
Measured
Written reviews
16
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
2.6
4-week average
Lifetime rating
4.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
28/100
faster than 13% of Education apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
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