Open-source subscription infrastructure

In-app subscriptions,
done right

Receipt validation, revenue analytics, and paywalls. With just a few lines of SDK code.
Open-source subscription platform. All features, zero revenue fees.

Get Started Free Explore Features

dashboard.subx.dev

MRR

₩12,450,000

+12.5%

Active Subscriptions

3,847

+8.2%

Trial Conversion Rate

68.4%

+3.1%

Churn Rate

2.1%

-0.4%

Why SubX?

Same features, different architecture. Own your subscription data.

Data Sovereignty

Fully open-source billing logic. No black boxes — verify how everything works.

Cost Savings

Flat operational cost with no revenue-based fees. Your costs don't scale with your growth.

Industry-Standard Features

Receipt validation, paywalls, A/B testing, 21 chart types — everything you expect from a top-tier platform.

Everything you need for in-app subscriptions

From store receipt validation to revenue analytics, with a single SDK.
Open-source and fee-free.

SDK & Receipt Validation

Integrate in-app purchases with iOS, Android, and Web SDKs. Server-side receipt validation for Apple App Store and Google Play is handled automatically to prevent fraud.

app.ts

import SubX from '@subx-dev/sdk';

// 초기화
await SubX.configure({ apiKey: 'sk_...' });

// 구독 상품 조회
const offerings = await SubX.getOfferings();

// 구매 처리 (영수증 검증 자동)
const result = await SubX.purchase(
  offerings.current.packages[0]
);

// 권한 확인
const entitled = await SubX.isEntitled('pro');

21 Charts & Real-time Analytics

Track subscriptions with 21 chart types including MRR, ARR, churn rate, LTV, trial conversion, retention, and conversion funnels. Supports daily, weekly, and monthly filters.

Monthly Recurring Revenue (MRR)

MRRChurnLTVConversion... +17 more

Entitlements & Offerings

Flexibly configure products, entitlements, offerings, and packages. Change prices and packages remotely from the server — enabling A/B testing without app updates.

Offering: Default

$rc_monthlycom.app.pro.monthly

₩9,900/월

$rc_annualcom.app.pro.annual

₩79,000/년

$rc_lifetimecom.app.pro.lifetime

₩199,000

Entitlement: pro→ Linked to 3 products

Webhooks & Real-time Events

Receive all events — subscription start, renewal, cancellation, refund, and billing failure — as HMAC-SHA256 signed webhooks. Up to 3 automatic retries with delivery logs.

INITIAL_PURCHASEjust now200

RENEWAL2 min ago200

CANCELLATION5 min ago200

BILLING_ISSUE8 min agoretry 2/3

HMAC-SHA256 signed · Auto retry · Delivery logs

Paywall Builder & Experiments

Build paywalls with drag-and-drop and find the optimal price and UI with A/B testing. Use targeting rules to show different offerings to different user segments.

Upgrade to PRO

Unlock all features

Monthly

₩9,900/월

Annual33% off

₩79,000/년

A/B Test: variant_b (conversion +18%)

Customer Management & Customer Center

Manage per-customer subscription history, transactions, and custom attributes. Embed Customer Center in your app so users can manage their own subscriptions and reduce support load.

user_jk_1234

First seen: 2026-01-15

Active

SubscriptionPro Annual

Entitlementpro, premium_content

Total Paid₩237,000

Renewal Date2027-01-15

MCP Server

Supports Model Context Protocol so you can query and analyze subscription data directly from AI tools like Claude and Cursor. Ask about MRR trends or churn analysis in plain language.

settings.json

// Claude Code / Cursor에서 바로 사용
"subx-mcp": {
  "command": "npx",
  "args": ["-y", "subx-mcp"],
  "env": {
    "SUBX_API_KEY": "sk_..."
  }
}

// AI에게 질문하면 끝
// "이번 달 MRR이 얼마야?"
// "이탈률이 가장 높은 상품은?"
// "지난주 신규 구독자 목록 보여줘"

Supported Platforms

Apple App Store

iOS, iPadOS, macOS

Google Play

Android

Handle all store in-app purchases through a single unified SDK

Getting started is simple

Four steps to a complete in-app subscription system

Create a project

Integrate the SDK

Install the iOS, Android, or Web SDK and connect with just a few lines of code.

Configure products

Set up subscription products, offerings, entitlements, and paywalls from the dashboard.

Launch & Analyze

Optimize your subscription business with 21 chart types and A/B testing.

SubX vs Competitors

Same payment features. The difference is data ownership and cost structure.

Feature	SubX	Competitor
Receipt Validation (Apple/Google)	✓	✓
Entitlements & Offerings	✓	✓
Real-time Charts & Analytics (21 types)	✓	✓
Webhooks (HMAC signed, retries)	✓	✓
Paywall Builder	✓	✓
A/B Testing & Experiments	✓	✓
Customer Center	✓	✓
REST API & SDK	✓	✓
MCP Server (AI tool integration)	✓	✓
Full Data Ownership	✓	—
No Revenue-based Fees	✓	—
Open Source	✓	—

Simple pricing

Free up to $2,500 MTR. Just 1% beyond that.

Free

Free under $2,500 MTR

All features included
Unlimited apps
Charts & analytics
Community support

Get Started Free

Pro

1% of MTR

1% of MTR above $2,500

All features included
Experiments & A/B testing
Targeting & segments
Email support
99.9% SLA