Frequently Asked Questions About StackLogic
Frequently Asked Questions
What is StackLogic?
StackLogic is a visual tolerance stack-up analysis application designed for mechanical engineers. It allows you to create tolerance loops directly from assembly screenshots, CAD cross-sections, engineering drawings, and design review images, then calculate nominal, Worst Case, and RSS stack-up results in a single workflow.
Who is StackLogic designed for?
StackLogic was built for:
- Mechanical Engineers
- Design Engineers
- Product Engineers
- Manufacturing Engineers
- Aerospace Engineers
- Tolerance Analysts
- Independent Consultants
Anyone who currently creates tolerance loops in PowerPoint and performs calculations in Excel can benefit from StackLogic.
How is StackLogic different from Excel?
Excel is excellent for calculations but does not provide a visual representation of the tolerance loop.
StackLogic combines:
- Visual loop creation
- Dimensional contributor tracking
- Worst Case calculations
- RSS calculations
- Organized stack-up tables
into a single workflow.
How is StackLogic different from PowerPoint?
PowerPoint is commonly used to manually create tolerance loop diagrams, but updating loops can be time-consuming and prone to errors.
StackLogic allows you to:
- Click through the loop path
- Automatically generate loop segments
- Maintain traceability between the visual loop and calculations
- Eliminate repetitive PowerPoint edits
What types of images can I use?
StackLogic can be used with:
- Assembly screenshots
- CAD cross-sections
- Engineering drawings
- PDF exports
- Design review screenshots
- Marked-up engineering images
Any image that clearly shows the assembly geometry can be used as the basis for a tolerance loop.
Does StackLogic perform RSS analysis?
Yes.
StackLogic calculates:
- Nominal Stack-Up
- Worst Case Stack-Up
- Root Sum Square (RSS) Stack-Up
and displays the results directly in the stack-up table.
Does StackLogic perform Worst Case analysis?
Yes.
Worst Case calculations are included and can be viewed alongside RSS results within the application.
Is the software subscription-based?
No.
StackLogic Professional is currently offered as a one-time purchase with a lifetime license.
No recurring subscription is required.
Is commercial use allowed?
Yes.
The StackLogic Professional license may be used for commercial engineering work, consulting projects, and internal company use.
Is there a free version?
Yes.
The free version includes:
- Visual tolerance loop creation
- Worst Case analysis
- RSS analysis
- Up to 5 tolerance stack entries
No credit card is required.
What operating systems are supported?
Currently:
- Windows 10
- Windows 11
Does StackLogic require an internet connection?
No.
StackLogic is a desktop application and performs calculations locally on your computer.
An internet connection is only required to download and activate the software.
Can I use StackLogic for aerospace and defense applications?
Yes.
StackLogic was developed by an aerospace mechanical engineer and is suitable for aerospace, defense, industrial, automotive, and general product development applications.
Engineers remain responsible for verifying assumptions, requirements, and analysis results.
Is training required?
Most engineers can begin creating tolerance loops within minutes.
The workflow is intentionally designed to mirror how engineers already perform tolerance stack-up analyses using screenshots, PowerPoint, and Excel.
What does the lifetime license include?
The lifetime license includes:
- Full StackLogic Professional functionality
- Unlimited tolerance stack entries
- Commercial use rights
- Future software updates within the current major version
Can I request new features?
Yes.
User feedback helps drive future development. Feature requests can be submitted through the Contact page.