Erika Kullberg’s apps

Financial Growth Coach

Combine budgeting, saving, investing, and financial education into an ongoing coach.

Budgeting, saving, investing and the explanations behind them in one ongoing relationship rather than four apps and a podcast. It teaches the thing being done at the moment it is being done.

What a v1 does5 features
  • One plan covering spending, saving and investing
  • Short lessons attached to the decision in front of the user
  • Monthly check-ins that adjust the plan
  • Progress across all three tracked together
  • Education framing throughout, without securities recommendations

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 $12 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

These viewers want budgeting, saving and investing taught together rather than as separate subjects, which is how the content presents them. Most tools do one. An ongoing coach across all three matches the mental model they already have.

Before it can launch

  • Open-banking access through Plaid; coaching stays educational without RIA registration

What it earns

Drag me Every figure recalculates as you go.

Paying users1,000

0.0047% of 21.2M followers · capped at 50,000

Price per month$12

Opens on the price this idea was costed at, $12.

1,000 paying — 0.0047% of 21.2M followers — × $12 a month = $12,000 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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