Decision frame · 2026-04-30
Substack vs KeepTier
Substack and KeepTier are different shapes solving adjacent problems. Substack is a newsletter platform where the paid tier is a feature; KeepTier is a membership page where the page IS the product. Most of the "vs" search traffic between them is creators who haven't yet decided what shape their thing is. The cleanest way to choose is to answer one question first: is your delivery channel email, or is it Discord / Telegram / a podcast feed / a community space? That answer picks the platform faster than any feature list.
Quick verdict
- Choose Substack if: your product is a newsletter, your readers want email, and you'd benefit from the Substack discovery network (Notes, recommendations).
- Choose KeepTier if: your product isn't a newsletter, your fulfillment is Discord/Telegram/access, and you want a flat-priced membership page that doesn't take 10% off the top.
Side by side
| Substack | KeepTier | |
|---|---|---|
| Primary product shape | Newsletter platform | Membership page |
| Pricing model | 10% of paid revenue | $9/mo flat |
| Stripe processing (both) | 2.9% + $0.30 | 2.9% + $0.30 |
| Apple iOS in-app fee | 30% on app-initiated subs | None — web-only |
| Email delivery | Built-in (the core feature) | Bring your own |
| Discord / Telegram fulfillment | Third-party glue (Zapier etc.) | Native webhook |
| Discovery network | Notes + recommendations | Off-platform (your existing channels) |
| Custom domain | Paid plans | Yes |
| Best for | Writers, journalists, newsletter-first creators | Podcasters, streamers, Discord-first communities |
The four axes
1 · Take rate at four revenue bands
| Gross MRR | Substack keeps | KeepTier keeps | Gap (KeepTier − Substack) |
|---|---|---|---|
| $500/mo | $436/mo | $476/mo | +$40/mo |
| $1,000/mo | $871/mo | $962/mo | +$91/mo |
| $2,000/mo | $1,743/mo | $1,933/mo | +$190/mo |
| $4,200/mo | $3,643/mo | $4,054/mo | +$411/mo |
| $8,500/mo | $7,402/mo | $8,231/mo | +$829/mo |
The Substack-vs-KeepTier gap scales with revenue faster than the Memberful gap because Substack's 10% is roughly double Memberful's 4.9%. By $8,500/mo the annual delta is just under $10,000.
2 · What you're paying for
Substack's 10% is buying a lot of product: a hosted editor, email delivery infrastructure (the hardest part of running a newsletter), comments, podcasts-on-Substack, Notes, the recommendation network, and Substack's deliverability reputation with Gmail and Outlook. That's a real bundle. KeepTier's $9 is buying the page, Stripe Checkout, and the webhook — and that's it. The comparison is honest only when you're using both bundles' features. If you're paying Substack 10% but never publishing posts there (some creators use Substack purely as a billing layer for a Discord), the value-per-dollar collapses.
3 · Audience ownership
Substack lets you export your subscriber list as CSV at any time, with email addresses. The relationship portability is real — you can migrate to Buttondown or Beehiiv tomorrow and keep your list. What doesn't port: the comments, the discovery placement, the reading habit (your readers' Substack home feed), and any subs that came in from recommendations/Notes. KeepTier's audience is your Stripe customer database — the customer ID, the payment method, the email. It ports to any other Stripe-based platform with no recompetes.
4 · The Apple tax angle
Substack ships an iOS app. New paid subscriptions started in-app go through Apple's StoreKit and pay Apple's 30%. Most paid subs come via web links — but as a writer's audience grows the in-app share grows with it, and Substack has not, as of this writing, given writers a per-publication "disable iOS in-app billing" toggle the way Patreon now has. KeepTier has no native app; every checkout is web Stripe; Apple's 30% is structurally impossible to trigger.
The honest pitch for each
Substack's pitch: "If your product is a newsletter, this is the only tool you need. Editor, email infrastructure, discovery, billing — all in one. The 10% is the cost of not assembling that stack yourself."
KeepTier's pitch: "If your product isn't a newsletter, you're paying Substack for an email infrastructure you'll never use. We charge $9/mo flat to handle just the membership transaction and access grant — Stripe Checkout in, Discord role or Telegram invite out."
YOUR DELTA, NOT THE BASELINE'S
This page is priced on a $4,200/mo show. The calculator runs Substack-vs-KeepTier at your real gross — and the cross-over is around $110/mo gross, where the flat plan stops being more than 10% of revenue.
Open the calculator →Related reading
- A Substack alternative: KeepTier — same numbers, structured for "alternative" search intent.
- Memberful vs KeepTier — closer head-to-head than Substack; both products are membership-page-shaped.
- Eight Patreon alternatives compared — Substack and KeepTier both appear in the eight-platform ledger.
- Patreon vs your own membership site — the broader frame.
Receipts use the standard KeepTier baseline: $4,200/mo in gross subscription revenue, fifty active subscribers, US creator with USD audience, Stripe at the standard 2.9% + $0.30 US card-present rate. Substack's 10% platform fee per support.substack.com. Numbers as of 2026-04-30.