Kill Bill vs WP Simple Pay
Kill Bill
killbill.ioWP Simple Pay
wpsimplepay.comSide by side
| Figure | Kill Bill | WP Simple Pay |
|---|---|---|
| Price from | $9,999/mo | $4.13/mo |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 5 | 4 |
| Spec score · Payment Processing Software | 9.2 (#4) | 7.1 (#57) |
| Integrations | The maker lists Stripe, Adyen, PayPal, Braintree, GoCardless, Coinbase, Avalara, and Vertex among its integrations. | The pricing comparison lists AffiliateWP, Divi, Elementor, Block Editor, Zapier, and webhooks as integrations. |
| Intended users | The maker describes Kill Bill as serving online businesses, teams needing customization, startups, and growth-stage companies. | The pricing FAQ names self-employed individuals, business owners, consultants, nonprofits, and developers as intended users. |
| Security | The overview describes encryption at rest and in transit, TLS communications, AES-256 stored-data encryption, audit logs, role-based access controls, and multi-tenant isolation. | The site says payment processing and storage use Stripe’s PCI-compliant servers and that payment information does not touch the user's server. |
| Support | The self-hosted open-source option includes community support, while paid support tiers are separately purchased for customer-managed deployments. | Plans include standard, priority, or premium support, and the company describes its support as available to answer customer questions. |
Plans
Kill Bill
- Kill Bill open sourceFree
- Self-Hosted Open SourceFree
- Aviate$9,999 a month
- AWS MarketplacePrice not published
- Hosted Platform (ChaChing)Priced on request
WP Simple Pay
- Personal$49.50 a year
- Plus$99.50 a year
- Professional$199.50 a year
- Elite$299.50 a year
In their own words
Kill Bill
Kill Bill is an open-source, programmable billing platform with APIs for pricing models, subscriptions, invoices, and payment gateway integrations. It supports usage-based billing, and plugins connect its payment platform to gateways, issuing banks, and fraud tools. The web-based Kaui back-office interface lets teams configure price books and manage subscriptions and payments. Listed integrations include Stripe, Adyen, PayPal, Braintree, GoCardless, Coinbase, Avalara, and Vertex. Installation options include Docker and Tomcat; Kill Bill can run on Windows, Mac, or Linux computers, or on a Linux cloud server. Described security controls include encryption at rest and in transit, TLS communications, AES-256 stored-data encryption, audit logs, role-based access, and multi-tenant isolation. The self-hosted open-source option includes community support, but customers operate and upgrade it; paid support tiers are purchased separately for customer-managed deployments. The AWS Marketplace option is listed at ~$40/mo, plus AWS infrastructure costs. Hosted-platform pricing follows a separate commercial model. The maker describes the product as serving online businesses, customization-focused teams, startups, and growth-stage companies.
WP Simple Pay
WP Simple Pay has no write-up on Specifiction yet; its figures are above.