Moov vs Kill Bill
Side-by-side trajectory, velocity, and editorial themes.
Moov keeps widening its money-movement surface — surcharging, Google Pay, and client-side auth.
Moov is a money-movement API and platform steadily broadening what merchants can accept and how they monetize. Recent releases add surcharging, tipping, HSA/FSA/HRA healthcare cards, Google Pay, user-defined payment-link amounts, and a client-side TypeScript SDK with OAuth. The cadence is a quarterly API train (v2026.04.00 stable, v2026.07.00 in development) with steady interim feature drops and heavy bug-fix hygiene.
The platform is moving in two directions at once: expanding acceptance rails (Google Pay, healthcare benefit cards, instant-bank RTP/FedNow) and giving merchants more monetization levers (surcharging, tipping, user-defined amounts). The v2026.07.00 cycle introduces breaking changes — deprecating taxAmount in favor of a structured amountDetails.tax object — signaling an API cleanup to support richer amount modeling.
Expect v2026.07.00 to reach stable in July with surcharging generally available, and continued instant-payment expansion as FedNow follows RTP on instant-bank-credit.
Kill Bill grinds out invoice-reliability fixes on a mature 0.24.x line.
Kill Bill remains a mature open-source subscription-billing engine in steady maintenance on its 0.24.x line. Recent releases concentrate on invoice-processing reliability — retries, account parking on unrecoverable failures, and uniform failure logging — plus catalog and payment-plugin bug fixes. The 0.25.0 tag was cut in late June but shipped with no release notes, so its scope is unclear.
The direction is hardening, not expansion: most point releases are bug fixes and dependency updates rather than new capability. Invoice failure handling has recurred across the last several releases, pointing to an effort to make billing runs resilient to bad plugin and catalog states rather than fail silently. The parallel 0.25.0 tag hints a new minor line is being prepared, but there is no visible feature content yet.
Expect continued 0.24.x point releases on the same bug-fix cadence; whether 0.25.0 carries real new features will not be clear until it ships with actual release notes.
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