
At a glance
- Latest version
- v2026.1.1 (202601001)
- Updated
- Mar 19, 2026 (7 months ago)
- APK size
- 42.8 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- Any (no native code)
- Category
- Books & Reference (app)
- Listed since
- Jul 14, 2021 (at least)
- Permissions
- 10 (2 sensitive)
- Website
- the-ncec.com
- Developer contact
- [email protected]
- Privacy
- Developer's privacy policy
About this APK
Chemdata is an app by NCEC in the Books & Reference category, listed since at least July 2021. It has no native code, so it runs on any Android processor.
Since version 2024.1.2, the minimum Android version rose from 4.1 to 5.0. It asks for 10 permissions, 2 of them sensitive: read shared storage and modify shared storage. It asks for the same permissions as version 2024.1.4.
What's new in v2026.1.1
Description
From the listing uploaded by “appupdater”.
Version history
3 versions are listed, going back to v2024.1.2. Since v2026.1.1 it requires Android 5.0+.
Security & authenticity
Signing certificate
- Signature matches the Google Play version Checked by the source store on Mar 19, 2026.
- Certificate issued to “Ricardo AEA” 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 Mar 19, 2026
- Validated against Google Play Mar 19, 2026
- Signed byCN=Richard Harrison, OU=Ricardo AEA, O=Ricardo AEA, L=Harwell, ST=Didcot, C=UK
- Signing certificate (SHA-1)67:93:DF:86:A8:9A:52:2D:3B:8B:A7:F3:06:97:52:92:67:CD:B9:74
- File MD52c2ef6bc93791b058f21e7abc0020935
- 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 (10)
Chemdata requests 10 permissions, 2 of them sensitive.
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Access all downloads android.permission.ACCESS_ALL_DOWNLOADS
- Change wifi state android.permission.CHANGE_WIFI_STATE
- Full network access android.permission.INTERNET
- Internal broadcast protection (app-defined) com.arksoft.android.gbr.chemdata.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- View network connections android.permission.ACCESS_NETWORK_STATE
Required hardware & features
- Basic touch input android.hardware.faketouch
- Wi-Fi android.hardware.wifi
Chemdata APK: questions and answers
Is there a version of Chemdata for older Android phones?
The current version needs Android 5.0 or later. Version 2024.1.4 is the newest listed build that installs on Android 4.1 and later. Get version 2024.1.4 · 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 Chemdata 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 2c2ef6bc93791b058f21e7abc0020935.