Industrial Spring Calculator
IDC Spring Engineering Application
Zen Software, LLC · com.brahmasys.industrialspring
- Signature matches the Google Play version Details
At a glance
- Latest version
- v1.5 (200)
- Updated
- Jun 29, 2026 (3 months ago)
- APK size
- 2.5 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- Any (no native code)
- Category
- Tools (app)
- Listed since
- Jul 24, 2020 (at least)
- Permissions
- 1
- Website
- industrialspring.com
- Developer contact
- [email protected]
About this APK
Industrial Spring Calculator is an app by Zen Software, LLC in the Tools category, listed since at least July 2020. It has no native code, so it runs on any Android processor.
Since version 1.3, the APK grew from 1.5 MB to 2.5 MB and the minimum Android version rose from 4.0 to 5.0. It asks for 1 permission, none of them sensitive.
What's new in v1.5
Description
From the listing uploaded by “appupdater”.
Version history
2 versions are listed, going back to v1.3. Since v1.5 it requires Android 5.0+.
Security & authenticity
Signing certificate
- Signature matches the Google Play version Checked by the source store on Jun 29, 2026.
- Certificate issued to “zen software llc” This is the certificate of the Google Play version.
- Same certificate as the other version checked
Store checks and file details
- Developer signature verified Jun 29, 2026
- Validated against Google Play Jun 29, 2026
- Signed byCN=joshua janzen, OU=dev, O=zen software llc, L=minnetonka, ST=mn, C=US
- Signing certificate (SHA-1)64:32:B5:1C:A1:F0:D7:F2:37:E7:AF:2D:D0:94:34:22:91:02:9A:DB
- File MD520b133de5f464b7dd708d0a942e065cc
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.
Permissions (1)
Industrial Spring Calculator requests 1 permission, none of them sensitive.
- Internal broadcast protection (app-defined) com.brahmasys.industrialspring.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Required hardware & features
- Basic touch input android.hardware.faketouch
- Portrait screen android.hardware.screen.portrait
Industrial Spring Calculator APK: questions and answers
Is there a version of Industrial Spring Calculator for older Android phones?
The current version needs Android 5.0 or later. Version 1.3 is the newest listed build that installs on Android 4.0 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 1.3 · All versions
Can I install this APK over the version I already have?
Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.
Is the Industrial Spring Calculator APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the other version checked. After downloading, check that the file's MD5 is 20b133de5f464b7dd708d0a942e065cc.
