RigChalk Demo

A utility to help figure bridles for entertainment & theatrical rigging.

SweetMerch · com.sweetmerch.www.rigchaulk

Not rated yet 500+ downloads v2.0 Demo 6.6 MB Android 10+ PEGI 3 · Everyone

Download APK 6.6 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.0 Demo (30)
Updated: Jul 4, 2026 (3 months ago)
APK size: 6.6 MB
Requires: Android 10+ (API 29)
CPU support: Any (no native code)
Category: Tools (app)
Listed since: Mar 16, 2021 (at least)
Permissions: 1
Website: facebook.com/RigChalk
Developer contact: [email protected]

About this APK

RigChalk Demo is an app by SweetMerch in the Tools category, listed since at least March 2021. It has no native code, so it runs on any Android processor.

Since version 1.6 Demo, the APK grew from 4.7 MB to 6.6 MB. It asks for 1 permission, none of them sensitive.

What's new in v2.0 Demo

-Added a new point adjustment -Now 20 Quick buttons and rearranged the layout -Quick Buttons are now 15 character max -Fixed the picture of the bridle when Metric Venue is selected -Fixed some incorrect metric conversions (whole metric redo planned) -Added an option to show or hide functions that are still in beta -Added requested option for engineering-beam presets -Added selectable I/H and T beam shapes -Started requested metric unit choice (not finished) -Fixed bug in bridle force calculator

Description

From the listing uploaded by “appupdater”.

RigChalk is the handy quick-calculator to figure out bridle math when it come time to actually chalk the floor. It's efficient and will figure out the steel you need to draw the point and provides only points within the specs you choose, including looking out for points that may be too tight to be safe. Works with metric and imperial steel & venue information, and lets you choose from the supplies you have on hand to provide you with buildable, hangable bridles. This demo version includes a 14 day free trial. It almost goes without saying that RigChalk should always be used purely as a tool to assist professional riggers and any information it provides should always be approved by a lead rigger before it's used. Safety is #1 in rigging and should always be taken very seriously. RigChalk was designed and written by an ETCP certified and proud IATSE rigger.

Version history

2 versions are listed, going back to v1.6 Demo.

v2.0 Demo LATEST Jul 4, 2026 6.6 MB UNKNOWN v1.6 Demo Sep 23, 2023 4.7 MB UNKNOWN

All 2 versions

Security & authenticity

Security rating: Unknown

Signing certificate

Signature matches the Google Play version Checked by the source store on Jul 4, 2026.
Certificate from Google Play App Signing Google keeps the signing key for the developer, so the certificate carries Google's name.

Store checks and file details

Developer signature not checked yet Jul 4, 2026
Validated against Google Play Jul 4, 2026
Signed byCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Signing certificate (SHA-1)BF:ED:28:EA:75:A5:1F:B2:A0:B8:42:68:9F:68:D2:83:2C:F4:85:29
File MD51cb076ab64b67507ed95100aa7846c19
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. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (1)

RigChalk Demo requests 1 permission, none of them sensitive.

Reorder tasks android.permission.REORDER_TASKS

Required hardware & features

Basic touch input android.hardware.faketouch
Portrait screen android.hardware.screen.portrait

RigChalk Demo APK: questions and answers

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 RigChalk Demo APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Unknown. Its signature matches the Google Play version. After downloading, check that the file's MD5 is 1cb076ab64b67507ed95100aa7846c19.