vioscale
Comparison

FastSpring vs Kill Bill

No leader: the top candidate FastSpring has only 0.18 confidence (low), below the 0.35 needed to declare a winner. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

FastSpring full profile →Kill Bill full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
FastSpring52
Kill Bill45
Score
Vioscale score
FastSpring52 / 100low · 18%
Kill Bill45 / 100high · 77%
Pricing
Free tier
FastSpring–
Kill Bill✓
Model
FastSpringcommercial
Kill Billcommercial
Price level
FastSpring–
Kill Billmid
Transparent
FastSpring–
Kill Bill✓
Integrations
Count
FastSpring20
Kill Bill9
Security
Gdpr
FastSpring✓
Kill Bill✓
Pci
FastSpring–
Kill Bill✓
Scorecard
FastSpring–
Kill Bill4.5
Vulnerabilities
Reliability
Sla pct
FastSpring–
Kill Bill48
Status page
FastSpring✓
Kill Bill–
Adoption
Dependent repos
FastSpring–
Kill Bill15
Github stars
FastSpring–
Kill Bill5,703
Activity
Commits last 30d
FastSpring–
Kill Bill35
Release
Cadence days
FastSpring–
Kill Bill36
History
FastSpring–
Kill Bill20 items
License
Spdx
FastSpring–
Kill BillApache-2.0
Language
Primary
FastSpring–
Kill BillJava
Market
Availability

Capabilities

Feature-by-feature on the axes that matter for billing & invoicing software. “-” means undocumented, not absent.

Core
Subscription billing
FastSpring✓
Kill Bill✓
Usage metering
FastSpringNone
Kill BillReal-time
Pricing models
FastSpringSubscription, one-time purchases, recurring payments
Kill BillSubscriptions, usage-based, prepaid, postpaid, hybrid, and complex multi-currenc
Invoicing & AR
FastSpring✓
Kill Bill✓
Catalog management
FastSpring✓
Kill Bill✓
Commerce
Merchant of record
FastSpring✓
Kill Bill✗
Finance
Revenue recognition
FastSpringNone
Kill BillNative ASC 606
Tax handling
FastSpringNative
Kill BillNative
Collections
Dunning
FastSpringNone
Kill BillBasic retry
Integrations
GL / ERP sync
FastSpring-
Kill Bill✗
Ecosystem
API-first / developer-first
FastSpring✓
Kill Bill✓
Deployment
Self-hostable
FastSpring✗
Kill Bill✓
Insight
Revenue analytics
FastSpring✓
Kill Bill✓

What each one is

The product in its own terms, so the numbers below have context.

FastSpring

FastSpring is a merchant of record platform providing global payment processing, subscription management, tax compliance, checkout optimization, and comprehensive billing tools for digital products, SaaS, and software vendors.

Independently observed

Kill Bill

Kill Bill is an open-source billing and payments platform that handles complex subscription, usage-based, and prepaid billing models with multi-currency invoicing, tax compliance, and payment gateway abstraction. Deploy self-hosted or use fully managed hosting with optional enterprise accelerator capabilities.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

FastSpring

Pricing not documented yet.

Kill Bill

from $40/moHybridFree tier

Free open-source tier. Aviate software tiers (Foundation, Growth, Flock, Finance) priced separately as annual flat fees. Support plans as additional annual flat fees (Launch, Growth, Enterprise).

  • Open Source (Self-Hosted)Free
    • Full source code access
    • Docker deployment
    • Community support
    • Full infrastructure control
  • AWS Marketplace$40/mo
    • AWS account deployment
    • Faster evaluation path
  • Aviate - FoundationContact sales
    • Core admin and billing configuration
    • Pre-configured test environment
    • Operational views
  • Aviate - GrowthContact sales
    • Everything in Foundation
    • Dynamic catalog and pricing rules
    • Usage metering
    • Programmatic control
  • Aviate - FlockContact sales
    • Everything in Growth
    • Quote, order, contract workflows
    • Operational BI dashboards
    • Commercial diagnostics
  • Aviate - FinanceContact sales
    • Everything in Flock
    • Revenue recognition
    • Accounting periods
    • Multi-entity governance
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
FastSpring✓
Kill Bill✓
iOS
FastSpring✓
Kill Bill✗
Android
FastSpring✓
Kill Bill✗
CLI
FastSpring✗
Kill Bill✓
Deployment
Cloud / SaaS
FastSpring✓
Kill Bill✓
Self-hosted
FastSpring✗
Kill Bill✓
On-premise
FastSpring✗
Kill Bill✓
Hybrid
FastSpring✗
Kill Bill✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

FastSpring

4 total
  • HubSpot
  • Mailchimp
  • Zapier
  • WordPress
Independently observed

Kill Bill

9 total
  • Stripe
  • Adyen
  • Braintree
  • PayPal
  • GoCardless
  • Avalara
  • Vertex
  • LDAP
  • Active Directory
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.