RC Calc
v4.2.1 · 286 KB · code 11
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File information
UpdatedJun 4, 2024
PublishedApr 26, 2021
Packageru.slavaapps.cscalc
Versionv4.2.1 (11)
Size286 KB
MD50641223b724ae316cabdf188133a4e27
Min SDK15
Malware scanTRUSTED
Signature SHA183:E0:06:D8:D8:D6:19:DA:82:87:EC:84:55:CE:8B:52:63:03:CB:1B
SignerCN=Slava, OU=Slava, O=Slava
Total downloads10,000
This version10,000
Developerslavacapps
Age ratingEveryone
What's new in v4.2.1
- SDK update
Security scan
TRUSTED
- Developer signature verified 2024-06-04
- Signature SHA1 83:E0:06:D8:D8:D6:19:DA:82:87:EC:84:55:CE:8B:52:63:03:CB:1B
- File MD5 0641223b724ae316cabdf188133a4e27
How to install RC Calc v4.2.1 on Android API 15+
Takes about 2 minutes. You'll need roughly 286 KB of free storage.
- Grab ru.slavaapps.cscalc_11.apk — hit the Download button above (286 KB). 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 0641223b724ae316…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find ru.slavaapps.cscalc_11.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=Slava, OU=Slava, O=Slava. 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 RC Calc — tap Open on the install screen, or find the RC Calc icon in your app drawer.
Common install errors for RC Calc
- "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 15 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.