Spindle Books

Beginning Smart English Reading, Spindle Books ™

iPortfolio Inc. · com.spindle.spindlebooks

Not rated yet 10K+ downloads v4.0.24 18.2 MB Android 8.0+ PEGI 3 · Everyone

Download APK 18.2 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v4.0.24 (25)
Updated: Feb 10, 2026 (8 months ago)
APK size: 18.2 MB
Requires: Android 8.0+ (API 26)
CPU support: ARM 32-bit, ARM 64-bit
Category: Education (app)
Listed since: Aug 30, 2022 (at least)
Permissions: 11 (2 sensitive)
Website: iportfolio.co.kr
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Spindle Books is an app by iPortfolio Inc. in the Education category, listed since at least August 2022. It includes native code for ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 4.0.21, the APK grew from 15 MB to 18.2 MB and the minimum Android version rose from 5.0 to 8.0. It asks for 11 permissions, 2 of them sensitive: record audio and read media images. It asks for the same permissions as version 4.0.23.

What's new in v4.0.24

사용성 개선

Description

From the listing uploaded by “appupdater”.

Spindle Books ™ is an advanced reading program that is optimized for world-proven language learning. Spindle Books ™ applies a learning principle to make your child Bilingual. In particular, by introducing a learning method called "5-step multi-dimension reading", you can experience 5 times higher learning intensity. - Step 1: Eliminate learning tensions by revealing key words in a book through fun games. - Step 2: Cover the text and listen to what the native speaker reads to guess what the story is. - Step 3: I am immersed in the story by myself without interruption. Feel free to use eBook features as needed. - Step 4: It stimulates children's speaking need by listening to and listening to native speaker's voice. - Step 5: Learn the rules of the language naturally through review games. * Spindle Books ™ requires the following rights to run smoothly: [Optional] Microphone: Privileges for using the recording function in steps 3 and 4 [Select] Save: Permission to use pictures in the album for profile photo registration If you do not agree to the optional permissions, certain features may not work, but you can still use the Spindle Books ™ app. If you are using an Android 6.0 or lower version, you can not individually grant permission to select it, so we recommend that you check with the manufacturer of your device to find out if it offers an operating system upgrade, and if possible, upgrade to Android 6.0 or higher. Also, even if the operating system is upgraded, since the access permissions agreed to in the existing app will not change, you will need to delete and reinstall the already installed apps in order to reset access privileges. * How to withdraw Settings> Applications> Spindle Books> Permissions> Disable Microphone / Save If you have any questions while using the app, please contact the Customer Center at 1566-2246.

Version history

4 versions are listed, going back to v4.0.21. Since v4.0.22 it requires Android 8.0+.

v4.0.24 LATEST Feb 10, 2026 18.2 MB TRUSTED v4.0.23 Apr 2, 2025 16.7 MB TRUSTED v4.0.22 Jun 23, 2024 15.5 MB TRUSTED v4.0.21 Jun 5, 2024 15 MB TRUSTED

All 4 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Feb 10, 2026.
Certificate issued to “iPortfolio” This is the certificate of the Google Play version.
Same certificate as the 3 other versions checked

Store checks and file details

Developer signature verified Feb 10, 2026
Validated against Google Play Feb 10, 2026
Signed byCN=iPortfolio, OU=iPortfolio, O=iPortfolio, L=Seoul, ST=Seoul, C=KR
Signing certificate (SHA-1)68:9B:B8:AF:13:5F:7C:8E:1E:0A:FE:72:0A:BF:7F:88:7C:BB:A6:B1
File MD50d0b3b45a04df69eb18e7e5c6f730c9f
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 (3 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (11)

Spindle Books requests 11 permissions, 2 of them sensitive.

Read media images Sensitive android.permission.READ_MEDIA_IMAGES
Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
Change wifi state android.permission.CHANGE_WIFI_STATE
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
Internal broadcast protection (app-defined) com.spindle.spindlebooks.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Receive push notifications com.google.android.c2dm.permission.RECEIVE
Show notifications android.permission.POST_NOTIFICATIONS
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Landscape screen android.hardware.screen.landscape
Portrait screen android.hardware.screen.portrait
Touchscreen android.hardware.touchscreen
Multi-touch screen android.hardware.touchscreen.multitouch
Wi-Fi android.hardware.wifi

Spindle Books APK: questions and answers

Is there a version of Spindle Books for older Android phones?

The current version needs Android 8.0 or later. Version 4.0.21 is the newest listed build that installs on Android 5.0 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 4.0.21 · 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 Spindle Books 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 3 other versions checked. After downloading, check that the file's MD5 is 0d0b3b45a04df69eb18e7e5c6f730c9f.