Kahana vs Substack: Inbox for Reach, Hub for Depth
Substack is newsletter publishing, email delivery, paid subscriptions, and a writing-first community around posts and notes. Kahana is a durable library home for writing you already publish.
Kahana is a library of curated hubs, Explore, Clubs, and optional Stripe. Substack is newsletter publishing, email delivery, paid subscriptions, and a writing-first community around posts and notes. They overlap in places and diverge in others.
What each one is
Kahana is built around hubs people can open, Explore so strangers can find them, Aura as scarce daily recognition, and Clubs so discussion outlives a feed. Selling stays optional.
Substack is a publishing platform for newsletters and blogs, with podcast and Notes (social) capabilities, making it easy for writers to build paid subscription businesses.
Why this comparison
This article puts Kahana and Substack side by side. It covers what each supports as a first-class product job, key features, and a few research notes so you have a clearer picture of what they are, how they compare, and what you can actually do on each one. It is not a teardown, and it is not a switch-tomorrow pitch.
Coverage: Kahana vs Substack
Each row is a feature Kahana aims to unify in one Aura-powered library. Kahana supports all of them; Substack shows which of those it supports as a first-class, easy product job, not something you could theoretically find if you hunt.
| Feature | Kahana | Substack |
|---|---|---|
| Ebook | Yes | — |
| Short-form video | Yes | — |
| Long-form video | Yes | — |
| Series/Films | Yes | — |
| Courses | Yes | — |
| Newsletters | Yes | Yes |
| Audio | Yes | — |
| Memberships | Yes | Yes |
| Community & Messaging | Yes | — |
| Storefronts | Yes | — |
| Marketplaces | Yes | Yes |
What the rows mean
Yes means the platform has this as a first-class product job, what you open the app to do, not something you could theoretically find if you hunt.
- Ebook
- Yes if you can easily get and consume ebooks on the platform (free or paid) as a first-class product: open, buy, borrow, or read without hunting. Yes: Kindle, Goodreads, Wattpad, Project Gutenberg. No: Discord (a server might share a PDF; that is not an ebook product).
- Short-form video
- Yes if you can easily consume short-form video as a first-class surface (For You, Reels, Shorts). Yes: TikTok, Instagram Reels, YouTube Shorts. No: Twitch clips buried in a live-stream product.
- Long-form video
- Yes if you can easily watch creator / UGC long-form video (or specialty long video) as a core surface. Course lectures belong under Courses. Hollywood catalogs belong under Series/Films. Yes: YouTube, Vimeo, Twitch VODs, Nebula. No: Udemy lecture video (that is Courses).
- Series/Films
- Yes if you can easily watch series and films as an SVOD / catalog entertainment product. Yes: Netflix, Disney+, Crunchyroll. No: YouTube (some movies exist; it is not an SVOD catalog).
- Courses
- Yes if you can easily take or browse structured courses as a first-class product. Yes: Udemy, Coursera, Teachable, Kajabi. No: YouTube tutorials (helpful, not a course catalog).
- Newsletters
- Yes if you can easily read or subscribe to newsletters / creator writing as a first-class product. Yes: Substack, beehiiv, Medium, Ghost. No: X posts (not a newsletter product).
- Audio
- Yes if you can easily listen to music, podcasts, or audiobooks as a first-class product. Yes: Spotify, Amazon Music, Audible, YouTube Music. No: Discord voice chat.
- Memberships
- Yes if a creator or seller can accept payments from others and make money through the platform: checkout, fan subscriptions, tips, ads, shop, or creator funds. Not only a classic Patreon-style membership product. Yes: YouTube, Instagram, Patreon, Udemy, Gumroad, Shopify. No: Netflix, Goodreads, Slack, Wikipedia (you don’t earn as a typical creator).
- Community & Messaging
- Yes if you can create or join a group, community, or club, including group chats, Groups, subreddits, community tabs, discussion boards, or community feeds. A one-off comment on a single video or listing is not the bar; a durable place for the group to talk is. Yes: Discord, WhatsApp, Facebook Groups, YouTube Community, Reddit, LinkedIn Groups, Kajabi Community, Instagram. No: Netflix, Kindle, Spotify (no group/community space to create and talk in).
- Storefronts
- Yes if the product gives a creator a custom storefront or site that can take the place of building their own website (bio page, creator site, branded shop). Not a shop tab on someone else’s multi-seller marketplace. Yes: Linktree, Kajabi, Stan, Beacons, Shopify. No: Udemy instructor page, Etsy shop on Etsy’s marketplace.
- Marketplaces
- Yes if a typical person can search and shop a catalog of offerings from many sellers: courses, books, digital goods, etc. Storefront software (Shopify, WooCommerce) is not a marketplace unless shoppers browse many sellers there. Yes: Udemy (courses), Etsy, Gumroad, Kindle Store, Creative Market. No: Kajabi or Linktree (your site, not a public multi-seller catalog).
What you can do on each
On Kahana you can publish a hub, list it on Explore, discuss it in a Club, grant Aura, and turn on a Stripe paywall when you are ready to charge.
On Substack you can use Newsletters, Memberships, and Marketplaces as first-class product jobs. The inbox is the product: essays, archives, and paid subscriptions you already send on a cadence.
Using Kahana with Substack
You can use both. Substack keeps doing what it already does well. Kahana is another place to package the work, get discovered, and grow an audience.
Keep Substack as distribution. Link a Kahana hub or Club as the deep destination: archives, files, and discussion that survive a missed email.
Research notes on Substack
The notes below are directional public signals we aggregated through Perplexity searches of company sites, press, and secondary write-ups. Treat them as context, not an audit. Products and numbers change.
Scale, in public numbers
- 50M active subscriptions, with 5M paid.
- Writers collectively earned USD 450M in gross revenue in 2025; Substack platform revenue ≈USD 45M (10% of subscription revenue).
- Notes social feed for posts and interactions; integrated podcast hosting and RSS for audio newsletters.
Strengths
- Built-in audience and discovery. Apps, Notes, and recommendations help writers grow beyond their existing lists.
- Simple, writer-first UX. Minimalist editor, newsletter + blog publishing, basic automation, low friction for writers who want to write and send.
- Integrated monetization via paid subscriptions. Free and paid tiers; Substack handles billing and paywalls for monthly/yearly access.
- Community features. Comments, discussions, and Notes as a microblog-style social layer between readers and writers.
Weaknesses
- 10% platform fee on subscription revenue. Plus Stripe fees (≈2.9% + USD 0.30), material at scale.
- Closed ecosystem with limited integrations. Fewer integrations and APIs; harder to connect external tools or run sophisticated automations.
- Basic analytics and growth tools. Subscriber growth, opens, and basic engagement, less advanced than Beehiiv on segmentation and growth.
- Less flexible design and branding. Relatively fixed templates; sites are visibly “on Substack.”
Sources used for Substack facts: substack.com · expressionbytes.com · sequenzy.com · mattgiaro.com
