Cylinder Duration Calculator
v1.0 · 3.6 MB · code 1
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File information
UpdatedJul 21, 2020
PublishedJul 21, 2020
Packagecom.respondo.inc
Versionv1.0 (1)
Size3.6 MB
MD544cf2f155b55d04d03c76e492f033b1f
Min SDK16
Malware scanTRUSTED
Signature SHA139:B9:6F:0F:84:9D:BE:00:B8:75:BF:38:1B:97:2A:C2:82:11:D9:BB
SignerCN=Sara, OU=Lippord, O=Responsive Respiratory INC, L=St. Louis, ST=MO, C=1
Total downloads1,000
This version1,000
DeveloperResponsive Respiratory
Age ratingEveryone
What's new in v1.0
First Release
Security scan
TRUSTED
- Developer signature verified 2020-08-05
- Scanned for malware 2021-01-10 18:01:05
- Signature SHA1 39:B9:6F:0F:84:9D:BE:00:B8:75:BF:38:1B:97:2A:C2:82:11:D9:BB
- File MD5 44cf2f155b55d04d03c76e492f033b1f
How to install Cylinder Duration Calculator v1.0 on Android API 16+
Takes about 2 minutes. You'll need roughly 3.6 MB of free storage.
- Grab com.respondo.inc_1.apk — hit the Download button above (3.6 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 44cf2f155b55d04d…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.respondo.inc_1.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=Sara, OU=Lippord, O=Responsive Respiratory INC, L=St. Louis, ST=MO, C=1. 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 Cylinder Duration Calculator — tap Open on the install screen, or find the Cylinder Duration Calculator icon in your app drawer.
Common install errors for Cylinder Duration Calculator
- "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 16 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.