Ref Tools
v6.73.1 · 49.4 MB · code 969
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File information
UpdatedFeb 5, 2026
PublishedApr 8, 2021
Packagecom.danfoss.koolapp
Versionv6.73.1 (969)
Size49.4 MB
MD541275665623649b171b693cd697d56a2
Min SDK23
ABIsx86-64, arm64-v8a
Malware scanTRUSTED
Signature SHA1FD:21:16:B0:FC:CF:BD:33:05:61:C6:4B:2E:72:2C:19:C4:6A:3F:9C
SignerCN=NewGround, OU=Mobile games division, O=NewGround, L=Kiev, ST=Kiev, C=UA
Total downloads1,000,000
This version1,000,000
DeveloperDanfoss A/S
Age ratingEveryone
What's new in v6.73.1
Performance upgrades and bugfixes.
Security scan
TRUSTED
- Developer signature verified 2026-02-05
- Signature SHA1 FD:21:16:B0:FC:CF:BD:33:05:61:C6:4B:2E:72:2C:19:C4:6A:3F:9C
- File MD5 41275665623649b171b693cd697d56a2
How to install Ref Tools v6.73.1 on Android 6.0 Marshmallow+
Takes about 2 minutes. You'll need roughly 49.4 MB of free storage.
- Grab com.danfoss.koolapp_969.apk — hit the Download button above (49.4 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 41275665623649b1…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.danfoss.koolapp_969.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN=NewGround, OU=Mobile games division, O=NewGround, L=Kiev, ST=Kiev, C=UA. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open Ref Tools — tap Open on the install screen, or find the Ref Tools icon in your app drawer (this build targets x86-64/arm64-v8a devices).
Common install errors for Ref Tools
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android 6.0 Marshmallow or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.
- Works on one phone but not another — this build ships x86-64/arm64-v8a native code. Devices with a different CPU will reject it.