Supascribe
Suite of growth tools for Substack Newsletters
Marketing · Founded 2025 · New Zealand
- Marketing
- News & Magazines
- Social Media
- Content Creation
Can you vibecode this?
Yes
Embeds, popups, a newsfeed widget, a no-code landing page builder and view and subscriber analytics are ordinary web code. Stripe handles billing, and Zapier and API access are routine add-ons. Nothing here needs a licence, audit or owned content, so the core is straightforward to build.
The business
Total revenueEstimated from public sources and the business’s own reporting, not independently verified.
$25K+
Verified recently
Monthly revenueEstimated from public sources and the business’s own reporting, not independently verified.
$1K+/mo
↑ Growing · 60-day average
Peak month
~$4K
Best single month
Growth
−20%
Early months vs recent
Profit margin
87%
For owners
Own Supascribe? List it for sale.
Founders read this page looking for a business to build like your $1K+/mo one — some would rather buy one that already works. They skip the line, you get a clean exit. $25 one-time, no commission.
Why it works
Value proposition
Gives Substack writers landing pages, embeds and popups that convert more subscribers.
Problem
Substack's default pages and tools convert fewer visitors into subscribers.
Audience
Substack creators and newsletter writers growing their subscriber lists.
Business model
Free plan plus yearly-billed Starter, Growth and Pro tiers, with overage fees for extra views and subscribers.
Can you vibecode this?
Yes
Embeds, popups, a newsfeed widget, a no-code landing page builder and view and subscriber analytics are ordinary web code. Stripe handles billing, and Zapier and API access are routine add-ons. Nothing here needs a licence, audit or owned content, so the core is straightforward to build.
Moat
- Switching costs
Why people pay Supascribe
Writers who have built landing pages and embeds across their sites would have to redo them elsewhere. Trust from 7,000+ writers and large newsletters also helps, though a good copy could match the tools.
Product complexity
ModerateLanding page builder, embeddable forms, feeds and popups with view and subscriber tracking.
Data
LowPulls newsletter posts and subscriber activity from Substack, with no owned corpus needed.
Integrations & infrastructure
LowZapier and custom integrations sit on standard APIs, with embeds served from ordinary hosting.
Human operations
LowSelf-serve software with email support, and a dedicated manager only on the top plan.
Regulation / hardware
LowNo licenses or approvals are needed to sell growth tools to newsletter writers.
Build this business
Use the build specification below with any AI coding tool, or build it directly with Leapd.
Build This with Leapd →Leapd builds
- Tiered subscriptions with usage overages, with Stripe
- Zapier connections
- A landing page
Leapd runs
- Cold email outreach to potential customers
- Meta ads
- LinkedIn and X posts
- SEO and AI-search visibility
- A daily report of what shipped
Opportunity check
- Passes: Proven market: $1K+/mo already paid for it
- Passes: Proven model: Free, then $9, $20 or $249 monthly tiers billed yearly, plus overage, 87% margin
- Passes: Proven need: Substack writers need to convert more subscribers
- Passes: Buildable: Leapd builds it end to end
Build a web app that sells growth tools for Substack newsletters (landing pages, embeds and popups) on tiered monthly subscriptions with a free plan.
Product:
- Accounts and a customer dashboard to manage pages and embeds
- No-code landing page builder for newsletters
- Embeds: subscribe form, newsfeed and popup form with embed code
- Tracking of views and new subscribers against plan limits
- Analytics on paid plans
- Custom domain for landing pages on Growth and above
- Free plan with 2 basic embeds, 1,000 views and 100 new subscribers
- API access and custom integrations on the Pro plan
Billing:
- Free; Starter $9/mo, Growth $20/mo, Pro $249/mo billed yearly; $2 per extra 10,000 views or 100 subs, via Stripe.
Integrations:
- Zapier, connected through its API with the customer's own credentials.
Business details
Similar businesses
Questions
How much revenue does Supascribe make?
Supascribe has made $25K+ in revenue to date and brings in $1K+/mo, with its best month around $4K.
How does Supascribe make money?
Supascribe sells growth tools for Substack newsletters, charging monthly subscriptions across Free, Starter, Growth and Pro plans, plus fees for extra views and new subscribers.
Is Supascribe profitable?
Yes. Supascribe reports a 87% profit margin.
Is Supascribe growing?
Yes. Revenue has been rising over the last 3 months. Since its early months, monthly revenue has fallen 20%.
Can you vibecode a business like Supascribe?
Yes, with Leapd. It builds the product, then helps you find customers with outreach, ads and SEO. See the build spec →
Ready to build it?
The market is proven. The opportunity is real. Build your version with Leapd.
Build This with Leapd →Founder interest
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