WikiSleep Runway Planner

Drag the levers to see whether one raise is enough. It opens on our current numbers: $61 US CAC (last 7 days), $5,000 a month in US ads, $27,000 cash on Oct 1, and a $100K raise in December. The forecast runs Oct 2026 to Dec 2028.

Cash balance

Cash at the end of each month. The shaded band below $0 is where a second raise would be needed.

MRR over time

Monthly recurring revenue from subscriptions and partnerships, against the MRR we'd need to break even at that month's ad spend and costs, after app store, agency and RevenueCat fees.

    The CAC we need at each level of US ad spend

    Highest US CAC that keeps cash above $0 through Dec 2028 and ends cash-flow positive, holding every other lever where it is. Anywhere in the green band works.

      Revenue, total burn and net profit

      Per month. Burn is everything that goes out: app store and agency fees, RevenueCat, ad spend and fixed costs.

        New paying customers per month

        US ad spend ÷ CAC, plus 4 organic US customers a month, plus partnership customers once they start. Rest of World adds about 9 a month in the background and isn't shown.

          Monthly numbers

          How the model works

          1. New paying customers = US ad spend ÷ CAC, plus organic customers, plus partnership (B2B) customers from the month they start.
          2. Cancelled = last month's customers × monthly churn.
          3. Revenue = customers × revenue per customer ($8.29 for US and B2B). This is MRR; annual plans actually pay upfront, which helps cash a little while growing.
          4. Rest of World (mostly Canada) runs in the background at today's numbers. Switch it off under Other assumptions.
          5. Burn = app store fees (15%) + performance agency (15% of ad-driven revenue after store fees, so not B2B) + RevenueCat (1% in months over $2,500 USD) + ad spend + fixed costs ($6,745 a month).
          6. Cash = last month's cash + revenue − burn, plus the raise in the month it lands.
          7. MRR needed to break even = (ad spend + fixed costs) ÷ the share of revenue left after app store, agency and RevenueCat fees.

          A scenario passes when cash never drops below $0 from Oct 2026 to Dec 2028 and the business is cash-flow positive by Dec 2028. Same model and numbers as the New Forecast tab in the WikiSleep workbook, except that the tab takes partnerships as revenue per month instead of customers.