Top Books & Reference apps in Japan 🇯🇵

AndroidJune 9, 2026· Snapshot dated View all snapshotsMethodology

As of June 9, 2026, Kotoba - Traducción por Voz is the #1 Books & Reference app in Japan on Android.

AndroidiOS
#App / PublisherIntel
  1. 1
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  7. 71
  8. 81
  9. 9
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  11. 111
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  15. 151
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  28. 284
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  31. 312
  32. 321
  33. 334
  34. 341
  35. 352
  36. 363
  37. 371
  38. 382
  39. 395
    Kifflire: Steamy Romance Reads

    MOBOREADER TECHNOLOGY USA CO LTD

  40. 402
  41. 412
  42. 421
  43. 431
  44. 441
    DIRECT Reads

    ダイレクト出版株式会社

  45. 452
  46. 462
  47. 472
  48. 483
  49. 493
  50. 50

What changed

Movement between the previous day and June 9, 2026.

Methodology

Rankings are pulled daily from the Android store charts for Japan. We snapshot the top entries each day and compute day-over-day change relative to the prior snapshot. See our full methodology for data sources, refresh cadences, and quality filters.

Related rankings

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by the apps, publishers, or platforms referenced. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Data licensed under CC-BY-NC 4.0