Pricing
$1 a month. The first 100 never pay.
The calculator is free and always will be. So is the tracking sheet. The app is open now, free for life to the first 100 people. After that it’s $1 a month or $10 a year, with a 30-day refund and no questions.
Monthly
$1
Per month. Cancel any time from your account. No retention flow, no “are you sure.”
Annual
$10
Per year. Two months free against monthly. One decision instead of twelve.
Founding 100
The first 100 accounts are free, for life. Not free in beta, not free until something changes: free. It’s labelled on your account so there’s no argument about it. When the hundredth place goes, signups close until billing is live. The doors are open now.
Why a dollar
Because that’s what the app is worth today: two numbers, a delta, a ceiling, a trend line, a pile of grapefruit. Honest price for an honest scope. The plan is to fund the build through the podcast, partnerships and placements rather than through you, and to raise the price only as the program actually gets bigger. When it does, whatever you’re paying at the time is what you keep paying, for as long as you stay.
What’s free and what isn’t
| Feature | Free | Paid |
|---|---|---|
| Anonymous delta calculator | ✓ | ✓ |
| Tracking sheet (PDF and spreadsheet) | ✓ | ✓ |
| Science page and every citation | ✓ | ✓ |
| Blog | ✓ | ✓ |
| Account and saved history | no | ✓ |
| Two-number daily logging | no | ✓ |
| One-week baseline and your delta reveal | no | ✓ |
| Trend line (7-day moving average over raw points) | no | ✓ |
| Mass visualiser | no | ✓ |
| Tonight’s ceiling, every day | no | ✓ |
| Protocol card and baseline log downloads | no | ✓ |
The refund is the trial
There’s no free trial. Trials mean card capture, trial-end emails, and cards that expire. Instead you get 30 days, full refund, a self-serve button in your account settings, no email required. Your delta reveal lands after your first week, so you reach the payoff while you’re still fully covered.
What you’re actually paying for
A measurement tool. Not a program, not a plan, not coaching. It stores two numbers a day, computes your delta, smooths the noise, sets tonight’s ceiling, and shows the mass you’ve moved as a pile of grapefruit on a table. That’s the product. Everything it doesn’t do is on purpose: no food logging, no streaks, no leaderboards, no badges.
Can you do all of this on the free spreadsheet? Yes, actually. A week of doing it by hand is how you’ll find out whether you want the app.
Not for everyone
Before you subscribe, the signup asks five questions about whether this is the right tool for you. Under 18 is a hard no. A few other answers ask you to talk to a doctor first. Here’s the full list, so nothing surprises you at checkout.
Prices in USD. Billing, when it switches on, is handled by Stripe. Nobody is charged without notice, and founding accounts are never charged.