Challenge with Erin! Japanese app icon

Challenge with Erin! Japanese

The app can be used to study beginner-level vocabulary and expressions.

The Japan Foundation · jp.ne.erin.challengeerin

5.0 out of 5 (1 rating) 50K+ downloads v2.0.2 40.6 MB Android 8.0+ PEGI 3 · Everyone

  • Signature matches the Google Play version Details

At a glance

Latest version
v2.0.2 (80)
Updated
Sep 4, 2026 (1 month ago)
APK size
40.6 MB
Requires
Android 8.0+ (API 26)
CPU support
ARM 32-bit, ARM 64-bit
Graphics
OpenGL ES 2.0+
Category
Education (app)
Listed since
Oct 26, 2020 (at least)
Permissions
13 (4 sensitive)
Website
app.erin.ne.jp
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

Challenge with Erin! Japanese is an app by The Japan Foundation in the Education category, listed since at least October 2020. It includes native code for ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 1.5.3, the minimum Android version rose from 4.0.3 to 8.0. It asks for 13 permissions, 4 of them sensitive, including camera, record audio and read shared storage. It asks for the same permissions as version 2.0.1.

What's new in v2.0.2

- Bug fixes (fixed a crash that occurred when logging in) - Internal improvements (support for the latest Android environments)

Description

From the listing uploaded by “appupdater”.

Contents and how to use the app In the study section (‘Let’s Try’) there are four maps: spring, summer, autumn and winter, and you start with spring in the same way as Japanese schools start in spring. Contents: ・KOTOBA1  remember words through a game where you match cards with the same pictures ・KOTOBA2  make sentences by matching illustrations of verbs with cards of vocabulary often used with those verbs ・KOTOBA3 choose illustration cards with the same meaning as Japanese character cards and match the cards ・MANGA  become characters in a manga, choose the appropriate lines from the choices you are given, and read them out loud ・BUNKA  deepen your understanding of Japan through a quiz about Japanese culture and society ・STAGE TEST  a review test of what you studied at each stage. 20 multiple choice questions each with four options <Challenge yourself! Test section> There are 16 tests altogether in the test section (‘TEST’). You can take eight of these any one week. The questions change each week. Challenge yourself and check which Japanese vocabulary and words you remember and know with this test. Once you finish the tests, you will be issued with a certificate of results that includes your name. If your percentage of correct answers exceeds 80%, you receive a pass certificate that includes a medal (illustration)! ・KOTOBA LIST A mini dictionary where you can find all the vocabulary and expressions that appear in the app. Each of the words that you answered that you had remembered have a check mark next to them. In the list each word is also written in Roman alphabet and hiragana/katakana, and there is a translation of the word’s meaning to enable you to study Japanese characters. ・STATUS Every time you log in to the study section and study, you receive 100 points, and when you take a stage test, that score is added as points. You can see the results of your study to date, including your overall points, your weekly points (total points from the most recent Monday to Sunday), the number of words you have remembered so far, the number of stages you have cleared, and the number of tests you have passed. ・RANKING Displayed here is the overall point ranking of all learners using this app and the number of stages they have cleared, as well as your own overall points and number of stages cleared. ・HONIGON’S CAMERA When you clear the stage test of each stage in the study section, HONIGON’S CAMERA starts up. For each stage various different frames (background illustrations) are displayed, and you can take a ‘celebratory photograph’ combining these frames and a photo of yourself that you take.

Version history

4 versions are listed, going back to v1.5.3. Since v2.0.0 it requires Android 8.0+.

All 4 versions

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Sep 4, 2026.
  • Certificate issued to “Japan Foundation” This is the certificate of the Google Play version.
  • Same certificate as the 2 other versions checked

Store checks and file details

  • Developer signature verified Sep 4, 2026
  • Validated against Google Play Sep 4, 2026
  • Signed byCN=Omori Hiroshi, OU=Research and Development Section Japanese-Language Institute Urawa, O=Japan Foundation, L=Saitama-City?, ST=Saitama Pref., C=JP
  • Signing certificate (SHA-1)DE:26:A2:44:D7:53:FE:9A:F9:EF:85:D1:B9:7A:E8:E5:33:FB:0A:18
  • File MD5186ae79fef7d146fd65e4d74aa291662
  • Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (13)

Challenge with Erin! Japanese requests 13 permissions, 4 of them sensitive.

Required hardware & features

Challenge with Erin! Japanese APK: questions and answers

How much space does Challenge with Erin! Japanese need?

The APK is 40.6 MB, and the app also needs 234.1 MB of extra data (OBB files). Leave about 315.4 MB free for the installation.

Is there a version of Challenge with Erin! Japanese for older Android phones?

The current version needs Android 8.0 or later. Version 1.5.3 is the newest listed build that installs on Android 4.0.3 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 1.5.3 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Challenge with Erin! Japanese APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 186ae79fef7d146fd65e4d74aa291662.

Tags

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