Launched
AI & Productivity
88/100
proaiprompt.com
AI prompts that drive your intent. Describe your goal. The system infers role, structure, and quality rules automatically — then builds a prompt that actually …
Investment opportunities
Built on Ideas is full of founders actively building — many looking for collaborators, and some open to investment. Browse the live projects, or start with the highest-potential opportunities below, ranked by our engine on funding-readiness and market demand.
Idea
Health & Medical
89/100
MumSafe Relay: The Closed-Loop Maternal Emergency Transfer Network
MumSafe Relay ensures that when a pregnant patient is transferred between healthcare facilities, her essential clinical information reaches a capable receiving…
Idea
AI & Productivity
87/100
MemoryOS: The Missing Memory Layer for Your Digital Life
MemoryOS: The Missing Memory Layer for Your Digital Life The Problem Every day, we interact with hundreds of pieces of information on our devices. We download …
Idea
AI & Productivity
86/100
LifeCausality Engine – A Digital Twin That Reconstructs + Simulates Your Life
A system that not only reconstructs your life timeline, but also simulates alternate outcomes and hidden cause-effect chains behind your health, decisions, and…
Building
AI & Productivity
86/100
ClauseGuard
Your AI legal co-pilot that reads the fine print so you don't get burned by it
Idea
AI & Productivity
86/100
LifeReplay Engine – Reconstruct Any Moment of Your Life Like a Timeline Video
A system that automatically reconstructs your real-life experiences (health, activity, routines, events) into a replayable timeline using passive digital trace…
Introductions only. Built on Ideas is a noticeboard — we don't broker, advise on, or take part in any investment, and a project appearing here does not mean its founder is seeking investment. Nothing on this page is financial or investment advice or an offer of securities. Any discussions and due diligence are entirely between you and the project owner.
Idea Storm — brainstorming done right
Bring a problem or a rough idea, public or private. We put it in front of a diverse mix of real people and multiple AI models and hand you around 100 distinct concepts — every one scored by our own engine and ranked. Not one AI's 100 flavours of the same answer: 100 different minds.
We aim for ~100 concepts and, in most categories, stand behind their quality — and because every concept is scored and ranked, the strongest surface. For very niche or deeply technical briefs we'll be upfront at quote about realistic volume.
Our own ideas engine
Every concept runs through the Built on Ideas analysis engine — our own platform that scores ideas /100 across whatever dimensions matter to your brief: market fit, feasibility, ROI, timing, policy impact, safety, originality — weighted any way you want. You get a ranked shortlist with reasons, not a wall of text.
Core packages
Human tiers fund a prize pool that pulls in strong entries — the same mechanic that brought 150+ quality concepts to our seed contest.
Spark
$200
~100 concepts generated across multiple AI models and angles, each scored and ranked. Private PDF. Fast and fully automated.
Most popular
Surge
$500
Everything in Spark, plus a human community round (a prize pool draws real, diverse entries). Top concepts deep-appraised.
Storm
$1,100
Everything in Surge, plus a larger public challenge, deep appraisal on the top 10, a written synthesis of the themes, and priority turnaround.
Specialist, enterprise & ongoing
Product Roadmap Storm
from $1,500
100 feature and roadmap ideas, scored by impact vs. effort and ranked into a prioritised roadmap.
Grant & Funding Angle Storm
from $1,500
Ways to frame and position a project to win grants or funding, scored by funder fit and strength of case.
Competitive Response Storm
from $1,800
Fast ideation on how to respond to a competitor move or market shift, ranked by impact and speed to deploy.
Sector Storm
from $2,500
Industry-specific ideation across multiple rounds — bigger crowd + AI, competitor and market context, delivered as a presentation-ready deck.
Market Entry Storm
from $2,500
Ideas and analysis for entering a new market, segment or region, scored by opportunity, cost and risk.
Investment Idea Studio
from $3,500
Venture and opportunity ideation, then analysis and scoring against your criteria — market size, feasibility, timing, moat. Ranked shortlist with rationale.
Idea generation and analysis only — not financial or investment advice, and not a recommendation to buy or sell any security.
Hackathon-in-a-Box
from $3,500
We run a facilitated themed ideation sprint (AI + community) for your team or event, and hand back a ranked output pack.
Government & Public SectorFlagship
from $5,000 · up to $10,800
Bespoke policy, service and civic-challenge brainstorming. A large, diverse contributor pool plus AI, structured stakeholder-ready reports, and confidentiality built in.
Innovation Pipeline (retainer)
up to $10,000
An ongoing stream of scored concepts feeding your R&D or innovation pipeline, refreshed each cycle.
Blue-Sky Leadership Day
up to $10,000
A big, open-ended, future-focused ideation engagement for leadership teams, synthesised into clear strategic directions.
Add-ons
Validate an idea
from $9
Our deep appraisal — an honest, scored breakdown of a single idea, with the one change that would raise its score.
Roast My Idea
from $120
Brutally honest AI + crowd critique. The fastest way to find the holes before you build.
Name & Positioning Storm
from $150
100 name, tagline and positioning options, ranked. (Naming and words — not logo or visual design.)
“100 Ways To…”
from $200
Problem-specific ideation — 100 ways to grow, monetise, or fix a specific thing.
Campaign Angle Storm
from $400
100 marketing angles, hooks and campaign ideas, ranked. (Ideas and copy directions — not design work.)
Idea Subscription
from $99/mo
A fresh, ranked batch of concepts every month — for founders and agencies who need a constant flow.
Confidentiality & ownership
Private briefs stay private — an NDA is available on request. Ownership depends on the format: in a community or competition round you own the winning concepts you award prizes to; if you'd rather own everything, we can commission and pay contributors so all the work transfers to you. AI-generated concepts (the Spark tier) come to you outright. We'll confirm the exact terms with your quote.
Start a brief
Sponsor a challenge
Set a brief, put up a prize, and our community of builders competes to solve it. You get a wave of entries, real working solutions, and your brand in front of founders and makers. We run the whole thing — promotion, entries, and judging support.
How it works
- You tell us the brief and the prize you'd like to offer.
- We set up the challenge, promote it, and bring in entries.
- You pick the winner (we help with judging); the prize goes to them.
Packages
Each package is prize pool (paid to the winner) plus a platform fee for running it. Custom budgets welcome.
Starter
$350
$250 prize + $100 to run it
A focused micro-challenge to test the waters.
Most popular
Growth
$700
$500 prize + $200 to run it
Our most popular — bigger prize, more entries.
Flagship
$1,350
$1,000 prize + $350 to run it
Maximum reach, featured across the site.