Charlie Chang’s apps

Recurring Decision Automator

Automate recurring purchases, routines, reports, and repetitive decisions.

Finds the decisions being made repeatedly - the same order, the same report, the same reply - and turns them into rules. Each one is small; together they are most of a week's attention.

What a v1 does5 features
  • Repeated decisions detected from behaviour
  • Rules created from an example rather than configured
  • Scheduled actions for anything on a cycle
  • A confirmation step until a rule has proved itself
  • A log of what ran and what it decided

The market

Proven marketTask and daily planning
50M usersat Todoist, of whom roughly 300,000 pay

That is about 0.6% conversion at the most successful independent task manager there is. Motion went from $2M to $50M in under two years charging $19 to $34 a month, and Sunsama charges $16 to $20. At $9 a month this is priced below both.

Where these numbers come from
CompanyEarnsReachSource
Todoist$26.5M a year50M+ users · ~300k paying customersIndependent estimate
Motion$2M to $50M ARR in under two yearsNot publishedIndependent estimate
Sunsama$16–20/moNot publishedPublished pricing, 2026

Why this audience

These viewers already look for what can be systemised and delegated - that is the through-line of the content. The decisions they repeat weekly are the obvious next target and the one nobody has tooled. Automating them fits an instinct they have already formed.

Before it can launch

No licence, certification or data agreement stands between this and a launch — app-store review and an ordinary privacy policy aside.

What it earns

Drag me Every figure recalculates as you go.

Paying users1,000

0.05% of 2M followers · capped at 50,000

Price per month$9

Opens on the price this idea was costed at, $9.

1,000 paying — 0.05% of 2M followers — × $9 a month = $9,000 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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