toolgrep / Payments & billing / Churnkey

Alternatives to Churnkey

Churnkey: Customer retention and churn management software built for Stripe. 8 products similar to Churnkey, compared on pricing, free tier, API, MCP server, SDK and open source. 8 of 8 have a free tier, 8 of 8 have an API, 7 of 8 offer an MCP server, 1 of 8 is open source.

Runframe
Incident management, on-call scheduling, and status pages for engineering teams
Monitoring & observability free tierAPIMCP
Buttondown
Newsletter software for writers, creators, and developers
Email & messaging free tierAPISDK
Cloudinary
Image and Video Upload, Storage, Optimization and CDN
Hosting & infrastructure free tierAPIMCPSDK
Trophy
The gamification layer for consumer apps
APIs & backend free tierAPIMCPSDK
Plunk
Open-source transactional email platform
Email & messaging free tierAPIMCPopen source
Calendly
Meeting scheduling software with AI scheduling, notetaking, and payment tools
No-code & automation free tierAPIMCP
Snill
Custom business systems through conversation
No-code & automation free tierAPIMCP
Unkey
The Developer Platform for Modern APIs
APIs & backend free tierAPIMCPSDK

Side by side

Product	Pricing	Free tier	API	MCP server	SDK	Open source
Churnkey	Freemium · from $250/month (Starter, billed yearly)	yes	yes	yes	yes	yes
Runframe	Freemium · from $0	yes	yes	yes	—	no
Buttondown	Freemium	yes	yes	no	yes	no
Cloudinary	Freemium · from $0	yes	yes	yes	yes	no
Trophy	Freemium	yes	yes	yes	yes	no
Plunk	Freemium	yes	yes	yes	no	yes
Calendly	Freemium · from $10	yes	yes	yes	—	no
Snill	Freemium · from $0	yes	yes	yes	no	no
Unkey	Freemium · from $0/mo	yes	yes	yes	yes	—

Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.

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