NewEarly access — 7 days free, no card.

Build what the marketis asking for.

Building the wrong thing costs you months; finding out costs minutes. Describe your idea and ShouldBuild reads what your market already wrote — reviews, threads, complaints — and comes back with a verdict: build it or don't, with the quotes to prove it.

No surveys. No cold DMs. No three months of building to find out.

Analyses

+ New Analysis

FitTrack

Completed

Should you build it?

Build with caution

Intense competition and beloved free tiers — success hinges on a niche pain the leaders overlook, not another generic logger.

108

Pains

144

Praises

270

Signals

healthfitness
HevyStrongFitbod17 rivalsAug 2 View report

TaskHub

Completed

Should you build it?

Depends on niche

Build only for agencies drowning in client hand-offs — the horizontal market belongs to Notion and Slack.

392

Pains

346

Praises

1,269

Signals

productivityb2b
NotionSlackTrello18 rivalsJul 28 View report

FitMeal AI

Completed

Should you build it?

Not worth it

Saturated category with beloved incumbents at 4.6★+; remaining complaints are edge cases, not a wedge.

118

Pains

402

Praises

903

Signals

healthai
MyFitnessPalLifesum9 rivalsJul 21 View report
Open the full report

Reviews analyzed across platforms like these

Hacker NewsHacker NewsProduct HuntProduct HuntApp StoreApp StoreGoogle PlayGoogle PlayRedditReddit

The problem

Most products start with a guess.

You think you've found a good idea. You build it. You launch it. And then you find out what the market actually wanted.

The usual way

An idea3 months buildingLaunchSilence

With ShouldBuild

Market signalsValidateBuildLearn

ShouldBuild helps you listen before you build.

The system

The market is always talking. ShouldBuild keeps you listening.

Research once and it's stale by launch day. ShouldBuild turns market signals into a continuous loop: discover, validate, decide, build, watch — and back again.

  1. Discover

    Find gaps worth exploring

  2. Validate

    Should you build it?

  3. Decide

    Pick what makes the cut

  4. Build

    Turn insight into product

  5. Watch

    See how the market moves

What you ship feeds the next scan
01 ·Discover

No idea yet? The market keeps a list.

Type a market. ShouldBuild reads Reddit, the app stores, Hacker News and the open web, and hands you the gaps nobody is serving — each one backed by real complaints.

Market to scan

Strength training apps
Scan market

Openings found

Offer a highly customizable and extensive exercise database with advanced filtering and easy custom exercise creation.

High confidence2 pieces of evidence+ Add to my product

Implement a transparent and user-friendly pricing model, prioritizing one-time purchases or a very low subscription.

High confidence2 pieces of evidence+ Add to my product

Should you build it?

Build with caution

Building FitTrack as described is risky due to intense competition and high user satisfaction with existing free/freemium options.

108

Pains

144

Praise

270

Signals

Based on 270 real signals — every quote links to the post it came from.

Market problem #1

Existing apps have limited exercise databases, requiring users to manually create many custom exercises.

I miss a lot of exercises in the app. I had to create many custom ones myself, which is time-consuming and inconvenient.

Open the source
02 ·Validate

Your friends said it's a great idea. Ask people who pay.

Describe your idea and get a verdict you can argue with: the real problems, who you're up against, and whether this is worth your next three months.

03 ·Decide

Turn research into decisions, not another report.

Save what matters from any report onto one board and sort it by decision: undecided, exploring, or straight to your backlog.

Undecided

Users are frustrated with high subscription costs and prefer one-time purchases or generous free tiers.

From your report

Exploring

Users are frustrated with high subscription costs and prefer one-time purchases or generous free tiers.

From your report

To build

Users are frustrated with high subscription costs and prefer one-time purchases or generous free tiers.

From your report

Task created in your backlog

04 ·Build

The part a chat can't do

A complaint out on the web becomes a task in your backlog. Two clicks.

This is where ChatGPT stops. It answers, you close the tab, it's gone. Here what you learned becomes what you build — and the next analysis knows you did it.

1

A real finding

From the analysis, with the quote and the link.

Existing apps have limited exercise databases, requiring users to manually create many custom exercises.

I miss a lot of exercises in the app. I had to create many custom ones myself, which is time-consuming and inconvenient.

12 pieces of evidence

Go on, press it.

2

Your board

It lands undecided, next to everything else you kept.

Undecided

Existing apps have limited exercise databases, requiring users to manually create many custom exercises.

features
3

Your backlog

Turned into a task, ranked by what people actually asked for.

Extensive and easily searchable exercise database with video demos

FeatureHigh priority1-2 weeks
05 ·Watch

Week after week

Then see if the market agrees with what you built.

Every week, ShouldBuild re-checks competitors, prices, ratings and new complaints — and shows you whether the problem you set out to solve is actually moving.

ShouldBuild

Getting Started

Research

Validate an idea
Scan a market
Reports

My product

Ideas board
Product concept
Backlog
Market watch

What changed since last week

  • +83new complaints about pricing
  • +2competitors entered the market
  • −0.3average rating of the leader
  • +1opportunity that just opened up
  • Every run is compared against the previous one, so nothing repeats itself.
  • What you already built is remembered — the next report won't tell you to build it again.
  • The evidence stays put: quotes, links and dates you can open months later.

You don't just research the market. You learn from it.

And then you do it again.

New complaints reveal new opportunities. Opportunities become decisions. Decisions become products. Products change the market.

Discover
Validate
Decide
Build
Watch
Discover

ShouldBuild isn't a tool you use before launch. It's the system that keeps your product connected to the market.

For founders who'd rather validate than guess.

Whether you already have an idea or you're hunting for the next one, ShouldBuild gives you the market evidence to decide what deserves to be built.

I have an idea

Get the verdict, the real problems and who you're up against.

I need an opportunity

Point at a market and see what people are already asking for.

Not another research tool

Research tells you what's happening. ShouldBuild tells you what to do next.

Go from raw market signals to a decision, a backlog and weekly feedback — without stitching five tools together.

Traditional research

ShouldBuild

  • DataQuotes you can open
  • ReportsA build / no-build verdict
  • Research onceRe-checked every week
  • InsightsTasks in your backlog
  • Launch and guessShip and see what moved
Plans

Cheaper than building the wrong thing.

Early-access launch pricing: 7 days free with the whole product, no card. A single report for $39. Subscribe once you see your market won't sit still.

Free trial7 days
$0

The whole product. No card.

Single Report1 analysis
$39one-off

One market map, yours forever.

FounderRecommended
Launchthen$49/mo$20.75/mobilled $249 · save $99

Everything to decide, act and repeat — ten analyses a month for less than one report.

Studio
Launchthen$129/mo$54.08/mobilled $649 · save $299

For a queue of ideas.

Upgrade, downgrade or cancel anytime. No lock-in, no fine print.

Free trial7 days

Credits33
= analyses or market scans3
Parallel product workspaces1
Explorable market map
Build / no-build verdict
Problems, with the quotes
Competitors and their gaps
Openings worth taking
First users + ready-to-send messages
Pricing radar
Re-runs + what changed since last time
Ideas board + backlog
Market watch
Memory between analyses
Deepest reasoning model

Single Report1 analysis

Credits10
= analyses or market scans1
Parallel product workspaces1
Explorable market map
Build / no-build verdict
Problems, with the quotes
Competitors and their gaps
Openings worth taking
First users + ready-to-send messages
Pricing radar
Re-runs + what changed since last time
Ideas board + backlog
Market watch
Memory between analyses
Deepest reasoning model

Founder

Credits100/mo
= analyses or market scans10/mo
Parallel product workspaces1
Explorable market map
Build / no-build verdict
Problems, with the quotes
Competitors and their gaps
Openings worth taking
First users + ready-to-send messages
Pricing radar
Re-runs + what changed since last time
Ideas board + backlog
Market watch
Memory between analyses
Deepest reasoning model

Studio

Credits400/mo
= analyses or market scans40/mo
Parallel product workspacesUnlimited
Explorable market map
Build / no-build verdict
Problems, with the quotes
Competitors and their gaps
Openings worth taking
First users + ready-to-send messages
Pricing radar
Re-runs + what changed since last time
Ideas board + backlog
Market watch
Memory between analyses
Deepest reasoning model
FAQs

Frequently Asked Questions

AB

Hey! 👋 I'm Arturo Barbero.

I'm a Software Engineer and I've worked and collaborated with companies like Santander, Amazon, Apple and Inditex, and I'm an expert in building decision-making software. If you have any questions beyond the ones listed here, don't hesitate to reach out.

You can, and it will give you a reasonable answer with half of it invented. Here every sentence hangs off a real review or thread you can open. And more importantly: ChatGPT doesn't remember your product. Tomorrow you start from scratch — here, analysis #4 knows what you decided in #1, and what you already built.

Don't build first. Know why you're building.

The next three months get spent either way. Spend them building what the market already asked for — not finding out at launch that it didn't.

7 days free · 33 credits · no card.