ZenTest-Smart Water Tester
Smart Tester for pH/conductivity/TDS/Salinity/Resistivity/ORP/Temperature
Apera Instruments · com.zen.zentest
- Signature matches the Google Play version Details
At a glance
- Latest version
- v1.9.22 (10922003)
- Updated
- Jun 7, 2026 (4 months ago)
- APK size
- 22.4 MB
- Requires
- Android 4.3+ (API 18)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Category
- Tools (app)
- Listed since
- Dec 12, 2020 (at least)
- Permissions
- 15 (9 sensitive)
- Website
- aperainst.com
- Developer contact
- [email protected]
- Privacy
- Developer's privacy policy
About this APK
ZenTest-Smart Water Tester is an app by Apera Instruments in the Tools category, listed since at least December 2020. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.
It asks for 15 permissions, 9 of them sensitive, including precise location, camera and record audio. It asks for the same permissions as version 1.9.21.
What's new in v1.9.22
Description
From the listing uploaded by “appupdater”.
Version history
3 versions are listed, going back to v1.9.20.
Security & authenticity
Signing certificate
- Signature matches the Google Play version Checked by the source store on Jun 7, 2026.
- Certificate from Google Play App Signing Google keeps the signing key for the developer, so the certificate carries Google's name.
- Same certificate as the 2 other versions checked
Store checks and file details
- Developer signature verified Jun 7, 2026
- Validated against Google Play Jun 7, 2026
- Signed byCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
- Signing certificate (SHA-1)5F:8E:8F:35:D0:24:6F:F7:A5:29:3C:42:FF:5B:EB:F9:7C:A0:19:7B
- File MD5cd8ab0bf007781e50ba8c9aa87e1c6b2
- 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 (15)
ZenTest-Smart Water Tester requests 15 permissions, 9 of them sensitive.
- Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
- Bluetooth advertise Sensitive android.permission.BLUETOOTH_ADVERTISE
- Bluetooth connect Sensitive android.permission.BLUETOOTH_CONNECT
- Bluetooth scan Sensitive android.permission.BLUETOOTH_SCAN
- Camera Sensitive android.permission.CAMERA
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
- Read phone status and identity Sensitive android.permission.READ_PHONE_STATE
- Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
- Bluetooth privileged android.permission.BLUETOOTH_PRIVILEGED
- Full network access android.permission.INTERNET
- Internal broadcast protection (app-defined) com.zen.zentest.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- View network connections android.permission.ACCESS_NETWORK_STATE
Required hardware & features
- Bluetooth android.hardware.bluetooth
- Camera android.hardware.camera
- Basic touch input android.hardware.faketouch
- Location android.hardware.location
- Microphone android.hardware.microphone
- Portrait screen android.hardware.screen.portrait
- Wi-Fi android.hardware.wifi
ZenTest-Smart Water Tester APK: questions and answers
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 ZenTest-Smart Water Tester 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 cd8ab0bf007781e50ba8c9aa87e1c6b2.
