
Challenge with Erin! Japanese
The app can be used to study beginner-level vocabulary and expressions.
The Japan Foundation · jp.ne.erin.challengeerin
- 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
Description
From the listing uploaded by “appupdater”.
Version history
4 versions are listed, going back to v1.5.3. Since v2.0.0 it requires Android 8.0+.
Security & authenticity
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.
- Camera Sensitive android.permission.CAMERA
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
- Add home-screen shortcuts com.android.launcher.permission.INSTALL_SHORTCUT
- Change network state android.permission.CHANGE_NETWORK_STATE
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- Google Play license check com.android.vending.CHECK_LICENSE
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Push messaging (app-defined) com.ourcompany.ourapp.permission.C2D_MESSAGE
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- View network connections android.permission.ACCESS_NETWORK_STATE
Required hardware & features
- Camera android.hardware.camera
- Basic touch input android.hardware.faketouch
- Microphone android.hardware.microphone
- Portrait screen android.hardware.screen.portrait
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.