Introducing Heat Maps: The Gravity Growth Visibility Index for Sioux Falls
Every Sioux Falls business has two scores: how visible they are to AI search, and how authoritative they are to locals. We just built the index that measures both. Meet Heat Maps.
Sioux Falls Businesses Are Flying Blind on AI Search — Heat Maps Changes That
You can rank on Google page one, run decent ads down the 41st corridor, and still lose a customer to the newer shop that opened six months ago in The Bridges. Why? Because that newer shop shows up when someone asks ChatGPT or Perplexity a question you should own the answer to. You don't. They do. That's not a Google problem anymore — that's an AI discoverability problem, and most Sioux Falls businesses have no idea where they stand.
That's the exact gap Heat Maps was built to close.
Gravity Growth's Gravity Growth Visibility Index — what we're calling Heat Maps — is a scoring system that measures two things simultaneously: how well an AI engine understands and cites your business, and how much genuine local authority your brand carries in Sioux Falls specifically. Not in "the greater metro area." Not "regionally." Here. The East Side. Downtown. Harrisburg. Tea. The places your customers actually live.
Why Two Scores, Not One
Most visibility tools hand you a single number and call it a day. Heat Maps runs a two-axis model because one number lies to you.
A contractor in Brandon might have solid traditional SEO — directory listings, a few backlinks, decent Google Business profile — but when a homeowner asks an AI assistant "who does hail damage roofing in Sioux Falls," that contractor doesn't surface. His traditional signals don't translate to AI discoverability. The score looks fine. The phone isn't ringing.
Flip it around. A newer downtown restaurant might be getting mentioned in AI responses because they're active, well-reviewed, and their menu is cited across food platforms — but they have zero local authority signals that tell an AI model why they're relevant to Sioux Falls specifically. Great AI score. No roots. Still vulnerable.
AI Discoverability measures whether large language models have enough structured, accurate, consistent information about your business to cite you confidently. Local Authority measures the depth of your presence in Sioux Falls — citations, community relevance, neighborhood-specific signals, and yes, your standing in directories like The Directory.
You need both. Heat Maps shows you where you're strong, where you're exposed, and what to fix first.
"A good Google ranking and a weak AI Discoverability score is like a great storefront on Phillips Avenue with no sign. People walk past it every day."
How the Scoring Actually Works
Heat Maps pulls from a defined set of inputs across both axes. Here's what moves the needle:
AI Discoverability Inputs:
- Consistency of your NAP (name, address, phone) across every platform an AI might crawl — including The Directory
- Whether your business appears in AI-generated responses when tested against category + location prompts ("best HVAC company in Sioux Falls," "downtown SF brunch spots")
- Structured data presence on your website — the behind-the-scenes markup that tells AI models what you do, where you do it, and who you serve
- Quality and recency of reviews, because LLMs weight sentiment signals heavily
- Whether your content answers real questions — not keyword-stuffed paragraphs, but actual answers to what people ask out loud
Local Authority Inputs:
- Depth of citation across Sioux Falls-specific platforms, publications, and directories
- Neighborhood-level relevance — do you show up in conversations about West Ave dining, 41st corridor retail, or East Side services?
- Community presence: local press mentions, event participation, Chamber activity, sponsor visibility during the State Fair or Falls Park events
- Verified, active listings in place-based directories — this is exactly where The Directory listing functions as an authority signal, not just a vanity listing
- Longevity and consistency — SD winters weed out fly-by-night operations, and AI models are starting to recognize that pattern too
Scores run 0–100 on each axis. Where they intersect on the Heat Map grid is your current visibility zone. Four quadrants. Two you want to be in. Two that explain why your phone is quieter than it should be.
What Mid-Size City Businesses Get Wrong About Visibility
Sioux Falls isn't a small town anymore — 200,000 people, fast growth out toward Harrisburg and Tea, a downtown that's legitimately competing for talent and foot traffic. But it's not Minneapolis either. The national marketing playbooks don't translate cleanly here.
Big-city businesses can throw volume at AI discoverability — thousands of mentions, massive review counts, editorial coverage everywhere. That's not most Sioux Falls operators. What local businesses actually have is specificity. A pest control company that's handled every basement in Dell Rapids for twenty years. A flooring shop on the West Side that's been through three hail seasons and knows what the insurance replacement cycle looks like. A lunch spot downtown that feeds the same crowd every Tuesday.
That specificity is authority. The problem is it's rarely structured in a way that AI models can read and use. Heat Maps identifies the gap between the authority you've earned and the authority you're actually getting credit for.
"You've built something real. Heat Maps tells you whether the machines know about it."
How to Read Your Heat Map Position
When you get your Heat Maps score, you'll land in one of four zones:
High AI / High Local Authority — The Visible: AI models cite you and local signals back it up. You're in good shape. Focus on maintaining consistency and expanding your answer-engine footprint.
High AI / Low Local Authority — The Exposed: You're discoverable but thin. One bad data update, a competitor's push, or a platform change and you drop off. Build roots in Sioux Falls-specific channels now.
Low AI / High Local Authority — The Hidden: You've done the work. The community knows you. The machines don't. This is the most fixable quadrant and often the most frustrating for established local businesses.
Low AI / Low Local Authority — The Starting Line: No shame. Everyone starts somewhere. The path forward is clear — local citations first, AI-readable content second, structured data third.
The Bottom Line
Heat Maps exists because visibility in 2025 is a two-front problem, and pretending otherwise costs Sioux Falls businesses real money. If you're listed in The Directory, you've already made one smart move — that's a local authority signal that feeds directly into the index. If you don't know where you stand on AI discoverability, that's the gap Heat Maps closes. Get your score, understand your quadrant, and stop guessing why the newer competitor with half your experience keeps showing up first.
The best Sioux Falls businesses don't need to shout — they show up right when you're looking. That's the point of The Directory.