Mark Tilbury’s apps

Long-Term Hold / Anti-Panic Selling App

Help investors stick to a predefined strategy and discourage emotional selling during volatility.

Built for the ten days a decade when people destroy their returns. The strategy is written down in advance, and when the market falls the app shows what was agreed, what selling would cost, and what happened the last twenty times.

What a v1 does5 features
  • A written plan agreed in calm conditions
  • A cooling-off step before any sell decision
  • What this drawdown looked like historically, and what followed
  • The tax and timing cost of selling, calculated
  • A record of every decision, kept or reversed

The market

Proven marketMicro-investing
$400Ma year at Acorns, from 14M customers

Acorns is the evidence that a subscription rather than trading commission can carry a consumer investing product, with over $30B invested since inception. This is costed at $8 a month.

Where these numbers come from
CompanyEarnsReachSource
Acorns$400M+ annual revenue, 202514M+ all-time customers · $30B+ investedIndependent estimate
Stash$37.5M Series D raisedNot publishedAnnounced funding
Greenlight$2B managed by kids6.5M+ usersCompany-stated, 2024

Why this audience

Discipline through volatility is the central lesson of this content, and the audience agrees with it right up until a drawdown. They know their own weakness because it has been named for them. A plan written in calm conditions is aimed exactly at that self-knowledge.

Before it can launch

  • Read-only brokerage links through SnapTrade or Plaid Investments

What it earns

Drag me Every figure recalculates as you go.

Paying users1,000

0.005% of 20M followers · capped at 50,000

Price per month$8

Opens on the price this idea was costed at, $8.

1,000 paying — 0.005% of 20M followers — × $8 a month = $8,000 a month

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Fifty thousand paying users is the ceiling every one of these pages is drawn against, not a forecast. It opens at a thousand, the bottom of the range, so the first figures you see are the modest ones. What the cap buys is comparability: the same range on every app, and the percentage of the audience it takes as the number that moves.

Is this the one for your audience?

We fund it, build it, and run it. You bring the audience and take a share of the revenue. Nothing to pay and nothing to build.

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