What is the difference between PlanSnapper and Aci?

PlanSnapper is a browser-based tool for calculating ANSI-compliant GLA from existing floor plan images and PDFs. Aci is a separate tool with different core functionality. The right choice depends on whether you need to measure from a floor plan or perform a different task.

Can PlanSnapper replace Aci?

It depends on your workflow. PlanSnapper focuses on GLA calculation from floor plans — uploading an image, tracing the perimeter, and getting square footage. If Aci serves a different purpose in your process, the two tools may complement each other rather than compete.

Which is better for ANSI Z765 GLA calculation — PlanSnapper or Aci?

PlanSnapper is purpose-built for ANSI-compliant GLA calculation from floor plan images. It handles PDF uploads, perimeter tracing, and automatic area calculation in a browser with no install required. Whether Aci offers equivalent GLA functionality depends on its feature set.

How much does PlanSnapper cost compared to Aci?

PlanSnapper and Aci have different pricing models — one may charge per user, per project, or via annual subscription, while the other may offer a free tier or pay-per-use option. Check the comparison table above for current pricing details and which offers better value for your volume of work.

Which is easier to use — PlanSnapper or Aci?

Ease of use depends on your starting point. PlanSnapper tends to fit one type of user or workflow, while Aci is designed for another. If you are working from an existing floor plan PDF and need to calculate square footage quickly, a browser-based tool like PlanSnapper may reduce the learning curve entirely — no software installation required.

Do I need PlanSnapper or Aci if I already have a floor plan PDF?

If you already have a floor plan as a PDF or image, you may not need either tool. PlanSnapper lets you upload the PDF directly and trace walls in your browser to calculate GLA — no software installation required. Both PlanSnapper and Aci are most useful for creating sketches from scratch or capturing measurements in the field.

Which works better for calculating GLA — PlanSnapper or Aci?

Both PlanSnapper and Aci can support GLA calculation, but the workflow differs. One may require field measurement and sketch entry while the other may allow importing existing floor plans. If your starting point is an existing PDF or image floor plan, PlanSnapper provides a faster path — upload, trace, and get the GLA figure without entering either tool's workflow.

How do PlanSnapper and Aci handle existing floor plan PDFs?

Neither PlanSnapper nor Aci is primarily designed to import and calculate square footage from an existing PDF floor plan. Both tools are built around creating or capturing floor plans from scratch. If you already have a PDF floor plan, PlanSnapper lets you upload it directly, trace the walls, and get an accurate GLA figure without redrawing anything.

Which is better for occasional users — PlanSnapper or Aci?

PlanSnapper and Aci are both specialized tools with learning curves that reward regular use. Occasional users often find dedicated subscription tools hard to justify. For someone who needs to calculate square footage a few times a month, PlanSnapper is designed for exactly that — no training required, no annual contract, upload and measure in minutes.

Compare · 6 min read

PlanSnapper vs ACI: Which Is Better for Floor Plan Measurement?

ACI (Appraisal Century Inc.) is one of the longest-standing appraisal form platforms, used by thousands of residential appraisers for URAR reports, UAD compliance, and integrated sketching. PlanSnapper is a browser-based tool built for one specific job: measuring GLA from an existing floor plan. Here is how they compare.

The short version

ACI: Full appraisal software platform with form completion, UAD compliance, sketch tool, and AMC integrations. Designed for the complete appraisal workflow from inspection to delivery.
PlanSnapper: A browser tool for uploading an existing floor plan and calculating ANSI Z765-compliant GLA by tracing the perimeter. Not an appraisal form platform -- a fast, accurate measurement layer that works alongside any form software.

PlanSnapper vs ACI: at a glance

	PlanSnapper	ACI
Primary purpose	Measure GLA from an existing floor plan	Full appraisal form software platform
Upload floor plan image/PDF	Yes (core feature)	No (sketch tool draws from scratch)
ANSI Z765 GLA calculation	Yes (above/below grade separation, compliant output)	Yes (auto-calculates from drawn sketch)
Works from CubiCasa / Matterport exports	Yes	No
UAD form completion	No (measurement tool only)	Yes (core feature)
Platform	Browser (any device, any OS)	Windows desktop
Requires field measurements to sketch	No -- derives dimensions from floor plan scale	Yes -- manual wall-segment entry
No software install	Yes (browser only)	No (Windows application)
Price	$9 day pass / $29/mo	Annual license ($500+/yr)
AMC portal integration	N/A (not form software)	Yes (Mercury Network, others)

What ACI does well

ACI has been a reliable appraisal form platform for decades. Its users often cite stability, straightforward UAD compliance, and a sketch tool that integrates directly into the report. For appraisers who do traditional field inspections, enter wall segments manually, and want everything in one Windows application, ACI delivers a complete, consistent workflow.

ACI also has strong AMC portal connectivity and supports the major submission formats. For appraisers who have used it for years, there is little reason to switch form platforms -- the learning curve for any appraisal software is steep, and ACI's user base tends to be loyal.

Where ACI falls short for floor plan measurement

No floor plan upload. ACI's sketch tool requires you to draw from field measurements. If you receive a CubiCasa scan, Matterport floor plan, or any existing floor plan image, you cannot use it as a reference to trace from -- you re-enter all dimensions manually.
Windows only. ACI is a desktop application. It does not run on Mac, iPad, or in a browser. Cross-device access is not possible.
Sketch tool is additive, not analytical. ACI's sketch is designed to build a floor plan, not analyze one. The gap shows when the workflow starts with a floor plan that already exists.
Full platform cost. ACI is priced as complete appraisal software. If you only need measurement capability -- to verify GLA on a floor plan you already have -- paying for a full platform is overkill.

How appraisers use both

ACI handles the complete appraisal report. PlanSnapper handles the measurement when you have an existing floor plan to work from. These tools address different parts of the same workflow.

A common pattern: the appraiser uses ACI for the URAR form and does traditional field sketching for most properties. But when a listing agent provides a CubiCasa scan, or when reviewing a complex multi-level floor plan, they open PlanSnapper, upload the image, trace the perimeter, and get the GLA figure to enter into ACI. Two minutes, verified, ANSI-compliant.

Already have the floor plan?

Upload any floor plan PDF or image and calculate ANSI Z765-compliant GLA in minutes. Works with CubiCasa, Matterport, iGUIDE exports, and any floor plan image.

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