New startup ideas · Consumer and commerce · Consumer

startup idea

Yearmark

Certified on-device age assurance and minor-safety controls, shipped as one SDK for consumer apps.

Yearmark is a subscription SDK that consumer app companies drop into signup and payment flows to estimate a user's age band on-device from face, voice and interaction signals, then enforce the right minor-safety rules per jurisdiction without sending biometrics to a server.

Software subscription
Enterprise
$10-100B market
Creates a new category
Global from day one

5/5

venture judge

similar startups, last 2 years (1 all-time)

94%

of 4 nearest real companies still alive

yes

4 matching federal grants and programs

Direction supported by government programs and grants

Test it before you build it

$850 · 4 weeks · 25 prospects

For $850 and 4 weeks, prove that youth-app teams under live age laws will pay $2,000 up front for one age-assurance SDK instead of waiting for free platform signals.

Riskiest assumption · A team shipping a youth-facing app under the UK Online Safety Act or the Texas app store law will pay a startup $4,000 now for age assurance rather than rely on Apple's and Google's free declared-age signals.

1Focus group: who and where

The founder or head of trust and safety at a US consumer social or gaming app with 50,000 to 5 million monthly users and a visible under-18 audience, who since January 2026 owes age checks under the Texas app store law and, if they ship in the UK, Online Safety Act age assurance on every build.

where to find 25 · The Trust and Safety Professional Association community and its Slack; a list built from the App Store Kids category and the top 100 free Social Networking and Casual games charts, matched to developer contact emails; the FOSI Annual Conference in Washington DC where this segment's compliance owners gather; r/gamedev threads where studios post about age-gate build rejections.

2Sell first, build later

An 8-week design-partner pilot: integrate the on-device age-band SDK beta into their signup flow, deliver the jurisdiction rule map for their live markets and a regulator-readable evidence log, with the integration week scheduled within 30 days of signing.

the ask · $4,000 per pilot ($2,000 at signing), then $0.02 per monthly verified user with a $500 monthly minimum, locked for 12 months for the first cohort.

a real yes · A signed agreement with a dated integration week plus the $2,000 payment cleared; a compliance lead saying 'this is exactly what we need', unpaid beta signups and store-reviewer sympathy are not a yes.

3Small experiments

The first one attacks the riskiest assumption; each ends with a number that says whether to run the next.

1. Priced pitch to 15 blocked teams
$250 · 10 days
Build the 25-app target list from the store charts, email founders and trust-and-safety leads, and run 15 calls that walk through their current age gate, name the Texas and UK obligations, and end with the $4,000 design-partner pilot offer. One founder runs the calls; log which law or store rejection each team names.
keep going if · 8 of 15 say Apple's and Google's declared-age APIs do not discharge their UK OSA or Texas duty, and 5 of 15 ask for the pilot order form
2. Design-partner landing page
$400 · 14 days
Ship a one-page site with the $4,000 pilot, the $0.02 per monthly verified user founding price, and a 60-second screen recording of a mocked on-device age-band flow with the evidence log. Send it to the 25-prospect list and post it in the TSPA Slack.
keep going if · 5 of 25 prospects book a scoping call from the page and 2 request the invoice
3. Close 2 paid pilots
$200 · 21 days
Send the two-page design-partner agreement and a $2,000 invoice to the 10 warmest prospects, each with a named integration week within 30 days. E-signature plus ACH or card; no code ships until money clears.
keep going if · 2 of 10 offered pilots sign the agreement and pay the $2,000 invoice

4Collect a deposit up front

Tesla took $1,000 refundable reservations for the Model 3 and $100 for the Cybertruck before building either: the deposit is the measurement, not the revenue.

$2,000

per prospect, refundable

how · A $2,000 invoice at signing on a two-page design-partner agreement, paid by ACH or card - app companies pay vendor invoices this size without a procurement cycle, and the signed agreement with a start date plus the cleared payment is the measurement. set up: Stripe Invoicing ↗

what it reserves · 1 of 5 first-cohort slots, a named integration week within 30 days, and the $0.02 per monthly verified user founding price locked for 12 months.

refund · Refunded in full if the SDK beta and evidence log are not delivered within 60 days of the agreed start date.

target · 2 paid pilots from 25 prospects within 4 weeks

before taking money · Do not collect or process any real minor's face or voice data and do not claim any certification or accreditation before COPPA and state biometric-privacy counsel review; run every pilot on adult testers and mock data.

Go: build it if

2 or more $2,000 pilot invoices paid within 4 weeks, and 8 of 15 interviewed teams say the free platform age APIs do not discharge their legal duty.

Kill: stop if

0 paid pilots from 25 prospects, or 10 or more of 15 teams say they will wait for Apple and Google's free age signals - the layer is being absorbed and there is no paying wedge.

5 Scripts to run itoutreach message, landing copy, deposit terms · click to open

outreach message

Your app serves teens, which now means UK Online Safety Act age checks and the Texas app store age law on every build you ship. I am building Yearmark, one on-device SDK that estimates age bands without sending biometrics to a server and comes with the evidence pack store reviewers and regulators ask for. We are taking 5 design partners at $4,000 for an 8-week pilot before general release. Do you have 20 minutes this week to walk me through your current age gate?

landing page

One SDK for age checks in every jurisdiction you ship $4,000 design-partner pilot: on-device age bands, per-jurisdiction rules, regulator-readable evidence log, integration in one week. Claim 1 of 5 pilot slots - book a scoping call.

deposit terms

$2,000 invoiced at signing reserves 1 of 5 design-partner slots, a named integration week within 30 days, and the founding price of $0.02 per monthly verified user locked for 12 months. It is refunded in full if we do not deliver an integrable SDK beta and evidence log within 60 days of your start date. The remaining $2,000 is due only when the pilot runs in your test build.

Would you run this test?

One tap. The yes-share feeds the Demand pillar of this idea's score; nobody sees who answered.

Budgets are out-of-pocket estimates for a team of one to three, US market. Size the deposit to the deal, and check the terms before taking money in a regulated line.

Scorecard

One score that balances how trendy the idea is, the demand for it and its potential for 100x, with competition measured relative to every other idea in the catalog. Recent startup trends first, government priorities second.

Idea Score, 0-100 · raw 51.2 x 1.61

Warm

competition: more crowded than 20% of ideas · headwind x0.90

+1.2

government priorities, secondary (2 matching grants)

Trend

Is the wave forming now? 2025-26 entrants vs 2023-24, rounds since 2025, the sector's live-batch direction, the 2026 trend analyst.

Entrants 2025-26 vs 2023-24 (similar companies)70
Rounds announced 2025+ in the sector38
Sector direction (live batch)0
2026 trend analyst75

Demand

Does anyone want it? YC's current RFS, companies already paid for something similar, the operator judge, founders' yes-rate in decks, readers who would run the test.

YC asks for it (current RFS: idea / sector)60
Someone already pays (similar companies, recent / all-time)17
Operator judge: real pain75

100x potential

Can it return a fund? The venture judge (double weight), market-size and moat axes, neighbours still alive, the technologist judge.

Venture judge100
Market size axis67
Moat axis80
Technologist judge25

Score = 100 x cbrt(Trend x Demand x 100x) x (1 - 0.5 x crowding) + government bonus (max 5), calibrated so the 95th-percentile idea scores 90 (order never changes). A geometric mean: a weak pillar cannot be papered over. Percentiles are among the 272 ideas in the catalog; the terms matched were certified, on-device, age, assurance, minor-safety, controls, shipped, subscription.

The idea in full

What: Yearmark is a subscription SDK that consumer app companies drop into signup and payment flows to estimate a user's age band on-device from face, voice and interaction signals, then enforce the right minor-safety rules per jurisdiction without sending biometrics to a server. It carries the accreditation and conformity audits itself, so a games or social app gets one integration instead of a separate vendor per country, plus an evidence log a regulator can read. Pricing is per monthly verified user, self-serve from a dashboard, with the enterprise tier for apps above ten million users.
Why now: Eight of the most recent consumer companies on the radar are AI-native social, game and creation products aimed at young users, including Instaplay (yc S26), Playabl.ai (yc X26), Pops (yc X26), Fifth Door (yc F25) and Doomersion (yc W26), and the same federal window shows the state paying for minor-safety programs directly, with the Title V Competitive Sexual Risk Avoidance Education opportunity closing 2026-08-17. NSF is also funding the sensing side, with a $50k I-Corps award on electroacoustic sensing using speakers as sensors, which is exactly the kind of passive on-device signal age estimation needs.
Wedge: first customer and entry point: Start with AI game and social startups shipping to app stores, where a single rejected build blocks launch: one SDK, one week of integration, one certificate they can show the store reviewer.
Path to 100x: Trust, safety and identity assurance spend across consumer software is a $10-100B market, and the winner is the one whose accreditation is recognised in the most jurisdictions, because every new market it certifies in makes it cheaper for the next app than any rival with a narrower certificate. A new category is born when age assurance stops being a country-by-country vendor purchase and becomes a single line in the consumer app stack, priced per user across billions of accounts.
Ceiling: If regulators converge on one government-issued credential per country, Yearmark becomes a low-margin pass-through and caps near $150M in revenue.
Closest real companies, as the generator saw them: No tracked company sells this yet: the radar tracks the consumer apps that carry the obligation, such as Instaplay, Playabl.ai and Pops, not the vendors that discharge it.
Main risk: Apple and Google ship platform-level age signals for free and the addressable layer collapses to a thin compliance report.

Five judges

Each judge scores every idea in the catalog with a named rubric; the venture judge decides whether a card is shown at all (4-5 is venture-grade).

Venture investor
5/5
Multi-jurisdiction accreditation priced per monthly verified user across billions of accounts is capital-light, global from day one, and compounds with each certificate.
Bootstrapper
4/5
Capital-light SDK sold per verified user to app teams whose build is blocked today, though multi-jurisdiction accreditation audits cost time upfront.
Operator
4/5
A rejected app store build blocks launch, which makes the compliance owner pay this week; the risk is Apple and Google shipping the signal free.
Technologist
2/5
On-device age banding is credible ML, but Apple and Google shipping platform age signals absorbs the layer in one OS release.
Risk
3/5
Self-held accreditation across jurisdictions is real footing, but Apple and Google shipping free age signals removes the layer entirely.
trends
4/5
Proving You're Human is a current RFS and the wave of youth-facing AI apps like Instaplay creates buyers that did not exist in 2023.

Similar startups in the directory

Companies whose pitch matches most of the idea's terms (certified, on-device, age, assurance, minor-safety, controls, shipped, subscription): 1 all-time, 0 from the last two years. Same matching as Idea Check.

Typewiseyc S22 · 2022 · Vertical AI agentsalive
Customer service AI that resolves requests end-to-end.

Run this as an Idea Check →

The generator's reference companies

Real companies the model named as closest when it wrote the card, with their fate. A check mark is a company the radar could verify in its directory.

Public money in this direction

US federal grants, SBIR/STTR awards and open opportunities from the radar's public-money feed, matched to the idea's terms; the sector totals give the context.

grants and programs matching the idea

startup-relevant grants in Consumer

$10M

awarded in the sector, tracked

opportunities open now in the sector

Stasys ATLAS platelet test: Expanding test cartridge manufacturing under ISO 13485 regulatory controls for FDA trial submissionawardhigh relevance
NIH / NHLBI · SBIR phase I · $326K · posted 2026-09-01
A Test for Heavy Alcohol Consumption in First Episode Coronary Heart Diseaseawardhigh relevance
NIH / NIAAA · SBIR phase I · $406K · posted 2025-08-15
cGMP manufacturing the clinical batch of oral gel drug for treating oral mucositis in cancer patientsawardmedium relevance
NIH / NIDCR · SBIR phase II · $1M · posted 2026-09-16
POSE: Phase I: Scoping OpenDQM – an Open-Source Ecosystem for Distributed Quality Managementawardmedium relevance
National Science Foundation · POSE · $292K · posted 2026-07-28

All public money by sector →

Market signal

What the radar sees in Consumer: new companies by cohort year, the forming YC batch, and outcomes since the February snapshot.

Consumer · 182 → 222 → 211 → 156 → 64 new companies 2022 → 2026 · 86% aliveYC F26 live: 4 in this cluster, 3% of the batch (was 3% in S26)Since February, of 782 YC companies here: 6 acquired, 4 shut down, 45 rewrote their pitch

Consumer: companies, trend and grants →

Design attributes

The card is one cell of a designed set: every axis below was chosen before the text was written, and the text had to realize it.

Buyer: Enterprise
Business model: Software subscription
Path to 100x: Creates a new category
Market size: $10-100B market
Capital intensity: Capital-light (software margins)
Speed to revenue: Revenue in 1-3 years
Technical depth: Deep tech: ML, hardware, bio
Go-to-market: Self-serve
Moat: License or regulatory moat
Geography: Global from day one
Regulation: Some regulation
Vibe: Hot space