Differential Equations Steps
v7.0.3 · 4 MB · code 70003
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File information
UpdatedMar 6, 2021
PublishedMar 6, 2021
Packageorg.krapp.diffequals
Versionv7.0.3 (70003)
Size4 MB
MD5d444fdfa32d2f81b110398aba4c5e436
Min SDK15
Malware scanTRUSTED
Signature SHA12D:D1:36:B0:32:34:04:31:0C:A6:F1:21:29:C1:8D:FF:99:F5:FE:68
SignerCN=Ivan Petuhov, OU=CEO, O=kontrolnaya-rabota.ru, L=Yekaterinburg, ST=SvOblast, C=RU
Total downloads100,000
This version100,000
DeveloperИван Петухов
Age ratingEveryone
What's new in v7.0.3
* Add initial conditions (Cauchy)
* Add custom keyboard toogle button
* Add custom keyboard toogle button
Security scan
TRUSTED
- Developer signature verified 2021-03-06
- Scanned for malware 2021-04-01 14:49:14
- Signature SHA1 2D:D1:36:B0:32:34:04:31:0C:A6:F1:21:29:C1:8D:FF:99:F5:FE:68
- File MD5 d444fdfa32d2f81b110398aba4c5e436
How to install Differential Equations Steps v7.0.3 on Android API 15+
Takes about 2 minutes. You'll need roughly 4 MB of free storage.
- Grab org.krapp.diffequals_70003.apk — hit the Download button above (4 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 d444fdfa32d2f81b…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find org.krapp.diffequals_70003.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=Ivan Petuhov, OU=CEO, O=kontrolnaya-rabota.ru, L=Yekaterinburg, ST=SvOblast, C=RU. 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 Differential Equations Steps — tap Open on the install screen, or find the Differential Equations Steps icon in your app drawer.
Common install errors for Differential Equations Steps
- "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.