Trigonometry Reference Pro
v3.0.1 · 3.7 MB · code 13
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File information
UpdatedOct 29, 2024
PublishedSep 14, 2020
Packagecom.vd.trigoformulapro
Versionv3.0.1 (13)
Size3.7 MB
MD58e40440bc6c916a9f3345110e6329cee
Min SDK14
Malware scanTRUSTED
Signature SHA10B:BA:64:13:7C:33:C3:72:75:63:7B:20:FE:3B:C0:BF:C3:17:8C:3F
SignerCN=Varinder Dua
Total downloads10
This version10
DeveloperVD
Age ratingEveryone
What's new in v3.0.1
App Optimization
Security scan
TRUSTED
- Developer signature verified 2021-04-22
- Scanned for malware 2021-04-22 12:21:14
- Signature SHA1 0B:BA:64:13:7C:33:C3:72:75:63:7B:20:FE:3B:C0:BF:C3:17:8C:3F
- File MD5 8e40440bc6c916a9f3345110e6329cee
How to install Trigonometry Reference Pro v3.0.1 on Android API 14+
Takes about 2 minutes. You'll need roughly 3.7 MB of free storage.
- Grab com.vd.trigoformulapro_13.apk — hit the Download button above (3.7 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 8e40440bc6c916a9…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.vd.trigoformulapro_13.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=Varinder Dua. 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 Trigonometry Reference Pro — tap Open on the install screen, or find the Trigonometry Reference Pro icon in your app drawer.
Common install errors for Trigonometry Reference 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 API 14 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.