Opt In
v1.5 · 1.1 MB · code 6
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File information
UpdatedOct 31, 2020
PublishedOct 31, 2020
Packagenet.holmconsulting.android.optin
Versionv1.5 (6)
Size1.1 MB
MD54a1b0c89ee8f3c8b1e814653c591ed4c
Min SDK24
Malware scanUNKNOWN
Signature SHA16D:E8:11:CE:FA:4E:22:09:28:7D:F7:BF:20:31:5B:9A:5D:9A:B3:C8
SignerCN=Alan Mehio, OU=Development, O=Holm Consulting Ltd, L=London, ST=London, C=UK
Total downloads500
This version500
DeveloperHolm Consulting Ltd
Age ratingEveryone
What's new in v1.5
Changes to the Manifest file as requested by Google Play for migration
minSdkVersion 24 and
targetSdkVersion 28
minSdkVersion 24 and
targetSdkVersion 28
Security scan
UNKNOWN
- Developer signature verified 2020-10-31
- Scanned for malware 2021-01-11 08:46:51
- Signature SHA1 6D:E8:11:CE:FA:4E:22:09:28:7D:F7:BF:20:31:5B:9A:5D:9A:B3:C8
- File MD5 4a1b0c89ee8f3c8b1e814653c591ed4c
How to install Opt In v1.5 on Android 7.0 Nougat+
Takes about 2 minutes. You'll need roughly 1.1 MB of free storage.
- Grab net.holmconsulting.android.optin_6.apk — hit the Download button above (1.1 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 4a1b0c89ee8f3c8b…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find net.holmconsulting.android.optin_6.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=Alan Mehio, OU=Development, O=Holm Consulting Ltd, L=London, ST=London, C=UK. 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 UNKNOWN).
- Done — open Opt In — tap Open on the install screen, or find the Opt In icon in your app drawer.
Common install errors for Opt In
- "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 7.0 Nougat 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.