CD Calculator Pro
v2.4 · 10.9 MB · code 20004
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File information
UpdatedMar 5, 2026
PublishedMar 12, 2021
Packagecom.redtrackr.cdcalc
Versionv2.4 (20004)
Size10.9 MB
MD543c8c2fa4c13edec9ed24629772528e7
Min SDK22
Malware scanTRUSTED
Signature SHA1EB:5C:3D:06:AA:59:9B:22:B7:F6:3B:F9:6B:E4:A8:8E:53:B1:A5:F7
SignerCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Total downloads5,000
This version5,000
DeveloperFrancisco Nunez
Age ratingEveryone
What's new in v2.4
Performance improvements and bug fixes.
Enjoying the app? Please leave a review!
Enjoying the app? Please leave a review!
Security scan
TRUSTED
- Developer signature verified 2026-03-05
- Signature SHA1 EB:5C:3D:06:AA:59:9B:22:B7:F6:3B:F9:6B:E4:A8:8E:53:B1:A5:F7
- File MD5 43c8c2fa4c13edec9ed24629772528e7
How to install CD Calculator Pro v2.4 on Android 5.1 Lollipop+
Takes about 2 minutes. You'll need roughly 10.9 MB of free storage.
- Grab com.redtrackr.cdcalc_20004.apk — hit the Download button above (10.9 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 43c8c2fa4c13edec…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.redtrackr.cdcalc_20004.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=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US. 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 CD Calculator Pro — tap Open on the install screen, or find the CD Calculator Pro icon in your app drawer.
Common install errors for CD Calculator Pro
- "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 5.1 Lollipop 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.