Comparison

Invoice Ninja vs Stigg

On the evidence we track, Invoice Ninja leads this comparison with a composite score of 64/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Invoice Ninja full profile →Stigg full profile →

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★Invoice Ninja64

Stigg58

Attribute comparison across 2 tools
Attribute	Invoice NinjaLeader	Stigg
Vioscale score	64 / 100high · 75%	58 / 100low · 47%
Pricing
Free tierpricing.free_tier	✓	-
Modelpricing.model	freemium	commercial
Price levelpricing.price_level	low	-
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	1,000	2
Security
Gdprsecurity.gdpr	✓	✓
Iso27001security.iso27001	-	✓
Pcisecurity.pci	✓	-
Scorecardsecurity.scorecard	3.5	-
Soc2security.soc2	✓	✓
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Finvoiceninja%2Finvoiceninja&per_page=100 · Last 12m: 0	-
Reliability
Status pagereliability.status_page	✓	✓
Adoption
Dependent reposadoption.dependent_repos	0	-
Github starsadoption.github_stars	10,027	-
Activity
Commits last 30dactivity.commits_last_30d	100	-
Release
Cadence daysrelease.cadence_days	2	-
Historyrelease.history	20 items	-
Language
Primarylanguage.primary	PHP	-
Market
Availabilitymarket.availability	Available worldwide	-

Score

Vioscale score

Invoice Ninja64 / 100high · 75%

Stigg58 / 100low · 47%

Pricing

Free tier

Invoice Ninja✓

Stigg–

Model

Invoice Ninjafreemium

Stiggcommercial

Price level

Invoice Ninjalow

Stigg–

Transparent

Invoice Ninja✓

Stigg–

Integrations

Count

Invoice Ninja1,000

Stigg2

Security

Gdpr

Invoice Ninja✓

Stigg✓

Iso27001

Invoice Ninja–

Stigg✓

Pci

Invoice Ninja✓

Stigg–

Scorecard

Invoice Ninja3.5

Stigg–

Soc2

Invoice Ninja✓

Stigg✓

Vulnerabilities

Invoice NinjaCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Finvoiceninja%2Finvoiceninja&per_page=100 · Last 12m: 0

Stigg–

Reliability

Status page

Invoice Ninja✓

Stigg✓

Adoption

Dependent repos

Invoice Ninja0

Stigg–

Github stars

Invoice Ninja10,027

Stigg–

Activity

Commits last 30d

Invoice Ninja100

Stigg–

Release

Cadence days

Invoice Ninja2

Stigg–

History

Invoice Ninja20 items

Stigg–

Language

Primary

Invoice NinjaPHP

Stigg–

Market

Availability

Invoice NinjaAvailable worldwide

Stigg–

Capabilities

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

Capability comparison for Billing & Invoicing Software
Capability	Invoice Ninja	Stigg
Core
Subscription billing	✓	✓
Usage metering	Basic	Real-time
Pricing models	Subscription, time-based, project-based invoicing	Per-call, tiered, credit-based, subscription plus overage, outcome-based
Invoicing & AR	✓	✓
Catalog management	-	✓
Commerce
Merchant of record	-	-
Finance
Revenue recognition	-	Native ASC 606
Tax handling	Integration	-
Collections
Dunning	Basic retry	-
Integrations
GL / ERP sync	✓	-
Ecosystem
API-first / developer-first	✓	✓
Deployment
Self-hostable	✓	✓
Insight
Revenue analytics	✓	✓

Core

Subscription billing

Invoice Ninja✓

Stigg✓

Usage metering

Invoice NinjaBasic

StiggReal-time

Pricing models

Invoice NinjaSubscription, time-based, project-based invoicing

StiggPer-call, tiered, credit-based, subscription plus overage, outcome-based

Invoicing & AR

Invoice Ninja✓

Stigg✓

Catalog management

Invoice Ninja-

Stigg✓

Commerce

Merchant of record

Invoice Ninja-

Stigg-

Finance

Revenue recognition

Invoice Ninja-

StiggNative ASC 606

Tax handling

Invoice NinjaIntegration

Stigg-

Collections

Dunning

Invoice NinjaBasic retry

Stigg-

Integrations

GL / ERP sync

Invoice Ninja✓

Stigg-

Ecosystem

API-first / developer-first

Invoice Ninja✓

Stigg✓

Deployment

Self-hostable

Invoice Ninja✓

Stigg✓

Insight

Revenue analytics

Invoice Ninja✓

Stigg✓

What each one is

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

Invoice Ninja

Leader

A comprehensive solution combining invoicing, payment processing, expense tracking, time management, and project coordination in a single platform, available in both cloud and self-hosted deployments.

Independently observed

Stigg

A runtime platform that manages credits, entitlements, usage metering, and budget governance for AI applications. It enforces spend limits and feature access in milliseconds before API calls execute.

Independently observed

Pricing

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

Invoice Ninja

Leader

HybridFree tier

Free forever tier available. Pro and Enterprise paid plans offered.

FreeFree

as of 2026-08-14verify ↗

Stigg

Pricing not documented yet.

Platform & deployment

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

Platform and deployment support comparison
Supports	Invoice Ninja	Stigg
WebPlatforms	✓	✓
iOSPlatforms	✓	✗
AndroidPlatforms	✓	✗
macOSPlatforms	✓	✗
WindowsPlatforms	✓	✗
LinuxPlatforms	✓	✗
CLIPlatforms	✗	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✗
HybridDeployment	✗	✓

Platforms

Web

Invoice Ninja✓

Stigg✓

iOS

Invoice Ninja✓

Stigg✗

Android

Invoice Ninja✓

Stigg✗

macOS

Invoice Ninja✓

Stigg✗

Windows

Invoice Ninja✓

Stigg✗

Linux

Invoice Ninja✓

Stigg✗

CLI

Invoice Ninja✗

Stigg✓

Deployment

Cloud / SaaS

Invoice Ninja✓

Stigg✓

Self-hosted

Invoice Ninja✓

Stigg✗

Hybrid

Invoice Ninja✗

Stigg✓

Integrations

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

Invoice Ninja

Leader

15 total

Stripe
PayPal
Square
GoCardless
Gmail
QuickBooks
Slack
MailChimp
Zapier
Make
Pabbly
Checkout.com
Helcim
PayFast
Nordigen

Independently observed

Stigg

2 total

AWS Marketplace
Stripe App Marketplace

Independently observed

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