
Ref Tools
The all-in-one app for air conditioning and refrigeration technicians.
Danfoss A/S · com.danfoss.koolapp
- Signature matches the Google Play version Details
At a glance
- Latest version
- v6.78.1 (984)
- Updated
- Sep 26, 2026 (13 days ago)
- APK size
- 49.2 MB
- Requires
- Android 6.0+ (API 23)
- CPU support
- x86 64-bit, ARM 64-bit
- Category
- Tools (app)
- Listed since
- Apr 8, 2021 (at least)
- Permissions
- 16 (5 sensitive)
- Developer contact
- [email protected]
About this APK
Ref Tools is an app by Danfoss A/S in the Tools category, listed since at least April 2021. It includes native code only for x86 64-bit and ARM 64-bit, so it won't install on phones that can only run 32-bit apps.
Since version 6.70.1, the minimum Android version rose from 5.0 to 6.0. It asks for 16 permissions, 5 of them sensitive, including precise location, camera and approximate location. It asks for the same permissions as version 6.77.2.
What's new in v6.78.1
Description
From the listing uploaded by “appupdater”.
Version history
4 versions are listed, going back to v6.70.1. Since v6.73.1 it requires Android 6.0+.
Security & authenticity
Signing certificate
- Signature matches the Google Play version Checked by the source store on Sep 26, 2026.
- Certificate issued to “NewGround” 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 Sep 26, 2026
- Validated against Google Play Sep 26, 2026
- Signed byCN=NewGround, OU=Mobile games division, O=NewGround, L=Kiev, ST=Kiev, C=UA
- Signing certificate (SHA-1)FD:21:16:B0:FC:CF:BD:33:05:61:C6:4B:2E:72:2C:19:C4:6A:3F:9C
- File MD53b4858ed3b8c1e9e891a226fd078bb81
- 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 (16)
Ref Tools requests 16 permissions, 5 of them sensitive.
- Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
- Camera Sensitive android.permission.CAMERA
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Control vibration android.permission.VIBRATE
- Detect screen capture android.permission.DETECT_SCREEN_CAPTURE
- 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.danfoss.koolapp.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Run foreground services android.permission.FOREGROUND_SERVICE
- 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
- Basic touch input android.hardware.faketouch
- Portrait screen android.hardware.screen.portrait
- Wi-Fi android.hardware.wifi
Ref Tools APK: questions and answers
Is there a version of Ref Tools for older Android phones?
The current version needs Android 6.0 or later. Version 6.70.1 is the newest listed build that installs on Android 5.0 and later. Get version 6.70.1 · 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 Ref Tools 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 3b4858ed3b8c1e9e891a226fd078bb81.