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SPECIFICTION
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Substack vs Zephr

Substack

substack.com

Zephr

zuora.com

Side by side

FigureSubstackZephr
Price fromFree—
Free planYes—
Free trialYes—
Open source——
WebYesYes
iOSYes—
AndroidYes—
APIYesYes
Plans published41
Spec score · Membership Site Platforms9.4 (#2)7.6 (#67)
IntegrationsOfficial integrations include RSS, podcast distribution to Apple and Spotify, Google Analytics 4, Google Tag Manager, X and Facebook pixels, Google site verification, YouTube and LinkedIn account connections.Zephr connects with other systems through third-party extensions, data layers, webhooks, and APIs.
PrivacySubstack's privacy policy says it endeavors to protect personal information but cannot guarantee complete security.Zuora says Zephr supports first-party data compliance under GDPR and CCPA.
SupportSubstack directs users to its Help Center for FAQs and walkthroughs and handles subscriber support questions on behalf of writers.Zephr documentation directs customers to contact their Zuora account team to request support for a specific integration.

Plans

Substack

  • Free publishingFree
  • Free to startFree
  • Custom domain$50, paid once
  • Paid subscriptionsPrice not published

Substack pricing →

Zephr

  • Contact salesPriced on request

Zephr pricing →

In their own words

Substack

Substack is a publishing platform for writers, creators, and subscribers, bringing posts, newsletters, podcasts, video, live streams, and pages into one publishing flow. Its editor supports scheduling, autosaved drafts, version history, templates, SEO metadata, and headline A/B testing. Creators can offer free or paid posts, subscriptions, trials, gifts, and group plans. Discovery tools include recommendations, Notes, leaderboards, referrals, and search; audience segmentation and email automation are also available. Podcast episodes can be distributed automatically to Apple Podcasts and Spotify, while video can go automatically to YouTube and LinkedIn. Publishing is free. When creators enable paid subscriptions, Substack keeps 10% of subscription revenue, and Stripe charges payment processing fees. Creators own their intellectual property and mailing list and can export their data. Substack serves writers, journalists, podcasters, video creators, experts, educators, and media companies. It is available on the web, Android, and iOS. Substack directs users to its Help Center and handles subscriber support questions on behalf of writers.

Visit substack.com

Zephr

Zephr has no write-up on Specifiction yet; its figures are above.

Visit zuora.com