Shelby Church’s apps

Can I Afford This?

Analyze whether major purchases fit the user's finances.

Answers one question honestly before a big purchase: what this actually does to your finances over the next year, not whether the balance covers it today. It accounts for the commitments already made and the ones this creates.

What a v1 does5 features
  • The purchase modelled against real income and committed spending
  • Twelve months of cash flow shown before and after
  • Financing compared against paying outright
  • What it delays - which goal moves, and by how long
  • A clear yes, not yet, or no, with the reasoning shown

The market

Proven marketBudgeting apps
10M membersat Rocket Money, which charges for budgeting and bill management

Monarch has roughly 1.8M monthly users and YNAB about 1.4M, at $99.99 and $109 a year. Mint's closure left the largest gap in consumer finance and three paid products grew into it. This is costed at $8 a month.

Where these numbers come from
CompanyEarnsReachSource
Rocket Money$880M+ saved for members10M+ membersCompany-stated, 2025
Monarch Money$99.99–199 a year~1.8M monthly active usersPublished pricing, 2026
YNAB$109 a year~1.4M monthly active usersPublished pricing, 2026

Why this audience

This audience watches large purchases interrogated in public - what it cost, whether it was worth it, what it did to the finances. They are pre-trained to ask the question before buying rather than after. An app that answers it honestly is the private version of what they come here to watch.

Before it can launch

  • Open-banking access through Plaid

What it earns

Drag me Every figure recalculates as you go.

Paying users1,000

0.053% of 1.9M followers · capped at 50,000

Price per month$8

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

1,000 paying — 0.053% of 1.9M followers — × $8 a month = $8,000 a month

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Revenue a month$0123456789,012345678901234567890123456789
Over twelve months$01234567890123456789,012345678901234567890123456789

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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