Series/Parallel Resistors

Find out combination of resistors in series/parallel making a desired resistance

Peter Ho · com.peterhohsy.seriesparallelresistors

Not rated yet 100K+ downloads v4.0.20 8.3 MB Android 6.0+ PEGI 3 · Everyone

Download APK 8.3 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v4.0.20 (4020)
Updated: Jul 27, 2026 (2 months ago)
APK size: 8.3 MB
Requires: Android 6.0+ (API 23)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Tools (app)
Listed since: May 2, 2021 (at least)
Permissions: 4
Developer contact: [email protected]

About this APK

Series/Parallel Resistors is an app by Peter Ho in the Tools category, listed since at least May 2021. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 3.3.45, the minimum Android version rose from 4.0 to 6.0. It asks for 4 permissions, none of them sensitive. It asks for the same permissions as version 4.0.15. The app offers in-app purchases through Google Play.

What's new in v4.0.20

4.0.20 - Fix minor bugs

Description

From the listing uploaded by “appupdater”.

When you do not have an exact resistor value in building a circuit, you need to combine two resistors either in series or in parallel. This app is used to find out all the combinations of these resistors making a desired resistance. This app is suitable for hobbyist or electronic engineers. Features: 1. Calculate resistance of 2 resistors in series / parallel (equivalent resistance) 2. To find out combinations of 2 resistors in series / in parallel making a desired resistance 3. Save all combinations in a CSV (Excel) file Features in PRO version only: 1. No Ad 2. No limitation Note : 1. For those who need support please email to the designated email. Do NOT use either the feedback area to write questions, it is not appropriate and that is not guaranteed that can read them.

Version history

4 versions are listed, going back to v3.3.45. Since v4.0.20 it requires Android 6.0+.

v4.0.20 LATEST Jul 27, 2026 8.3 MB TRUSTED v4.0.15 Mar 23, 2026 4.9 MB TRUSTED v4.0.10 Feb 1, 2026 4.9 MB TRUSTED v3.3.45 Apr 26, 2024 3.4 MB TRUSTED

All 4 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Jul 27, 2026.
Certificate issued to “Peter Ho” This is the certificate of the Google Play version.
Same certificate as the 3 other versions checked

Store checks and file details

Developer signature verified Jul 27, 2026
Validated against Google Play Jul 27, 2026
Signed byCN=Peter Ho
Signing certificate (SHA-1)41:02:A5:4E:EF:CC:4A:31:97:6A:CF:74:8A:ED:A1:D6:58:A7:02:DC
File MD5183f11f56971f7baef33445e5a961336
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 (3 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (4)

Series/Parallel Resistors requests 4 permissions, none of them sensitive.

Full network access android.permission.INTERNET
In-app purchases (Google Play Billing) com.android.vending.BILLING
Internal broadcast protection (app-defined) com.peterhohsy.seriesparallelresistors.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch

Series/Parallel Resistors APK: questions and answers

Is there a version of Series/Parallel Resistors for older Android phones?

The current version needs Android 6.0 or later. Version 4.0.15 is the newest listed build that installs on Android 5.0 and later. Get version 4.0.15 · 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 Series/Parallel Resistors free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the Series/Parallel Resistors 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 3 other versions checked. After downloading, check that the file's MD5 is 183f11f56971f7baef33445e5a961336.