Marketplace niche analysis

Don’t pour months of building into a niche that’s already closed.

Find the one function in your niche nobody’s built yet — before you write a line of code. ScanGap scans every app in a niche and scores each function Won, Contested or Open, so you build only where it’s still green.

S Shopify W Wix M monday.com J Jira Z Zendesk
Free · no credit card · first niche in 60s
Sample scan · Shopify · Reviews & UGC
Reviews & UGC
240 apps · ★ 4.85
71
Saturated
Function → status
Photo & Video Reviews Won
Review Requests Won
AI Moderation Contested
Insights & Analytics Contested
Q&A / Community Open
1 function still open to build
5
marketplaces
Shopify · Wix · monday · Jira · Zendesk
40+
niches scored
pre-scanned and ready
60s
per scan
niche name to decision
Weekly
refresh
never a stale snapshot

You spend months of nights and weekends building — then launch into a niche that five apps already own.

The problem was never your execution. It was picking the wrong niche.

ScanGap tells you in 60 seconds, before you write a line of code.

See what a scan looks like ↓

Niches close as competitors ship — by the time you notice, the column’s red.

// how it works

From niche to decision

From a niche name to a build decision in under a minute.

1

Pick a niche

Type any niche or pick from 40+ pre-scanned ones across Shopify, Wix, monday.com, Jira and Zendesk.

2

ScanGap maps the field

We crawl every app in the niche and score each function Won, Contested or Open — each backed by the actual apps.

3

Build where it’s green

Open functions are your opening. Build into the gap competitors left half-finished, with demand to back it.

// example · shopify · reviews & ugc

This is a sample scan.

Every app in the niche, every function it ships, scored Won, Contested or Open. The whole field on one screen — so the gap is impossible to miss.

App ↓ / Function →
Photo & Video Reviews
Won
Review Requests
Won
AI Moderation
Contested
Insights & Analytics
Contested
Q&A / Community
Open
Loox ★ 4.9
Judge.me ★ 4.8
Yotpo ★ 4.6
Okendo ★ 4.9
Fera ★ 4.8
Shopify · reviews & ugc — by function
Photo & Video Reviews Won
Review Requests Won
AI Moderation Contested
Insights & Analytics Contested
Q&A / Community Open
Q&A / Community is the open column — build here.
Open · build here Contested · no clear leader Won · already taken
This column is open — build here.
Scan my niche like this →
Free · no credit card · first niche in 60s
Built by indie hackers who shipped into closed niches one too many times.
// three conclusions

Three conclusions, pre-computed

Three answers, not a spreadsheet: is it open, who’s already won, and what’s left to build — each backed by the actual apps.

Opportunity · the payoff

What should you build?

Functions left half-built that have demand and someone willing to pay — ranked with three separate components, so the best opening is obvious. This is the answer you came for.

Saturation

Is the niche still open?

App count × concentration × rating × momentum. Few apps isn’t proof it’s open.

Function Matrix

Which functions are won?

An app × function matrix. Each column labeled Won / Contested / Open.

// the method

Not opinions. Evidence.

Every Won / Contested / Open call comes from the same transparent method — and you can check the work behind any of them.

We crawl the whole niche

Every public app listing — install counts, ratings, review volume, pricing, last-updated. Nothing sampled, nothing guessed.

A transparent formula scores each function

Won / Contested / Open from one explicit calculation: market concentration × rating quality × momentum. No black box.

Every cell links to the real apps

Each verdict points at the actual apps behind the call — open them and verify it yourself. Don’t take our word for it.

Re-crawled weekly

The map reflects the market today, not last year. A niche that closes this month shows red next week.

App × function
Open · build here Contested · no clear leader Won · already taken
// why i built this
I spent three months of nights and weekends building an app — then launched it into a niche five tools already owned. The painful part wasn’t the work. It was that fifteen minutes of looking would have told me the column was already red.

ScanGap is the check I wish I’d run first: every app in a niche, every function, scored Won / Contested / Open — so you put your months into the gap that’s still open, not the one that closed last year.
SG
— the ScanGap team
Indie builders, for indie builders
// questions

Questions, answered

Is it free?

Yes — you can scan your first niche free, no credit card. You get the full saturation score and function matrix before deciding anything.

How current is the data?

We re-crawl the marketplaces weekly, so app counts, ratings and the Won/Contested/Open calls reflect the field as it stands now, not a stale snapshot.

How do you decide a function is “won”?

A function is “won” when one or a few apps clearly dominate it on coverage, ratings and review volume — leaving little room for a new entrant. Each call links to the actual apps so you can judge for yourself.

What if my niche isn’t covered?

You can request a niche and we’ll scan it. We already have 40+ pre-scanned, and the crawler can map most categories on demand.

Which marketplaces?

Shopify, Wix, monday.com, Jira and Zendesk today — with more app ecosystems on the way.

Do I need to be technical?

No. You pick a niche and read a color-coded matrix. The output is a build decision, not a data dump — green means open, red means taken.

// what you get

Your scan gives you a build decision — not a data dump.

Four concrete outputs, every time. Read them in a minute, decide before you write a line of code.

Get my scan free →
01

A saturation score, 0–100

One number for how crowded the niche is — app count, concentration, ratings and momentum, combined.

02

The full function matrix

Every app × every function, each scored Won, Contested or Open. The whole field on one screen.

03

Open columns, ranked

The gaps with demand behind them, ranked by opportunity — so you know which one to build first.

04

The real apps behind every call

Every Won/Contested/Open verdict links to the actual apps, so you can check the work yourself.

Is your niche still open?

See your niche’s full function matrix in 60 seconds — and find the column nobody’s built yet.

Check my niche free →
Free · no credit card · first niche in 60s

60 seconds now, or three months on the wrong build.