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LunithLabs

A business operating system for people who sell · runs in Notion

See what every sale kept.

Channel fees, payment processing, ad spend and costs come off every sale. Lunith Commerce OS shows you what's left, sale by sale and channel by channel, inside your own Notion.

One-time purchase · no subscription

$35.99 intro price through Dec 14, 2026 · $59.99 after

One-time purchase · no subscription · Free updates, listed publicly · All sales final · We aim to fix it within 3–7 business days of having the details we need to reproduce it · Read the policy →

See everything inside →

Work out what your last sale kept, free →

One ledger, each channel you sell on.

Tap to enlarge

  • Know which channel actually pays. Your own website, Shopify, Gumroad, PayPal, Payhip, Lemon Squeezy and Etsy, side by side, after their fees.

  • See which products lose money. Costs and ad spend are logged against each product, and a flag ticks when one keeps $0 or less a sale.

  • Your copy, kept in your Notion. No subscription. Ten linked databases and a 51-page guide.

Example · fees checked 10 Oct 2026

Sale
$25.00
Stripe fees
−$1.03
Costs (materials, shipping, ads)
−$13.42
Kept
$10.55

Example: a $25.00 card sale on your own site at Stripe's standard US rate (2.9% + 30¢), with $13.42 of costs.

Example · Home · Money by channel

The Money by channel table of the OS in Notion, zoomed to the fees paid and net revenue columns of the example rows.
Example data · replace it with your own
Watch one sale go in · 15 sec, no sound needed
Example data: logging a $40 Payhip sale. Payhip's 5% fee is $2.00; PayPal or Stripe processing, which Payhip says comes on top, is left blank in this example row.

Example fees checked 10 Oct 2026. Product updates are in the public update log →. We aim to fix anything broken within 3 to 7 business days of having the details we need to reproduce it, free of charge.

Lunith Commerce OS

$35.99

$35.99 intro price through Dec 14, 2026 · $59.99 after

Day one: your channels and one sale. Log each sale, type a month's statement, or bring rows in from a CSV file. Nothing syncs by itself. Best on desktop.

One-time purchase · no subscription

One-time purchase · no subscription · Free updates, listed publicly · All sales final · We aim to fix it within 3–7 business days of having the details we need to reproduce it · Read the policy →

Do I need a paid Notion plan? Not for one person: the free plan runs everything.

You can ask us for a written copy of this policy. Your legal rights are not affected. Read the policy →

One-time purchase. Free updates: a fresh copy from your order link each time. All sales final. If something is broken, email us. Read the policy → · Questions? FAQ →

Examples only. Fees change and vary by account; check each channel's current rates. Etsy, Gumroad, Shopify, PayPal, Payhip, Lemon Squeezy, Stripe, Klarna and Notion are trademarks of their respective owners. LunithLabs isn't affiliated with or endorsed by them.