ChurnLens vs SimpleSubscription

ChurnLens is a self-hosted SaaS metrics tool for calculating MRR, churn, and LTV from Stripe or CSV data. Its full report includes current MRR, ARR run-rate, active customers, average customer churn, and monthly figures such as net-new MRR and LTV. The `mrr` command breaks the latest month’s MRR movement into new, expansion, reactivation, contraction, and churned amounts. Reports can return JSON and use a chosen currency label, with USD as the default.

ChurnLens can recompute metrics from ledger updates and publish JSON to a BI or dashboard pipeline. It also lists SARIF output for code scanning, an MCP server for AI agents, and webhook forwarding for SIEM, Slack, and Jira. The README describes use through MCP, JSON piped into agents or LLMs, or CI with exit codes and SARIF. Installation options include pip, pipx, uv, Docker, Homebrew, and a shell script. It requires no account. The source-available license permits personal, internal evaluation, research, and educational use; commercial or production use requires a separate license. Pricing is on request.

SimpleSubscription is a Shopify subscription management app for merchants, covering recurring billing, storefront subscriptions, and a customer portal. Its Subscribe & Save widget supports flexible discounts, delivery frequencies, annual billing, and Shopify native checkout. Subscribers can skip, pause, swap, or cancel subscriptions, change frequency, and update payment methods in the portal. The app retries failed payments and sends reminder emails on every plan, including Free. Shopify Sidekick AI features let merchants ask about subscription data, run subscriber actions with a confirmation step, and navigate to app editors. Migration options include Appstle, Seal, Recharge, Bold, Loop, and Skio, as well as CSV import and API migration. Plan caps count active subscribers only; paused, cancelled, and expired subscriptions do not count. SimpleSubscription says it charges no transaction fees, though Shopify’s standard payment processing still applies. Free includes up to 100 active subscribers; Growth costs $39 a month and Premium costs $99 a month. The pricing note lists a 14-day trial; annual billing options are advertised for paid plans.