CashSDKCashSDK

THE CASHSDK PLATFORM

Every piece of the purchase.
One thoughtful platform.

The paywall. The purchase. The renewal. The numbers.
Everything connects, so you can get back to building.

Start buildingExplore the docs
THE LIFECYCLE / END TO ENDExplore each stage ↓

Customer taps

  1. Paywalls

    Design & ship paywalls over the air

    Paywall canvasEditing · live
    Unlimited projects
    Advanced analytics
    Annual · $59.99SAVE 40%
    Explore Paywalls

  2. SDKs

    iOS, macOS, Android, Web & Chrome

    Install CashSDK
    Swift.package(url: "github.com/CashSDK/cashsdk-ios")
    Kotlinimplementation("com.cashsdk:cashsdk-android")
    Webnpm i cashsdk-web cashsdk-react
    Nodenpm i cashsdk-node
    Same entitlement API on every platform
    Explore SDKs

  3. Receipt validation

    Server-side Apple & Google verification

    Receipt validation Apple Google
    Signature verifiedpass
    Not a replaypass
    Fraud score 0.02pass
    Bound to app_user_idpass
    grant entitlementpro → true
    Explore Receipt validation

  4. Subscriptions

    Entitlements, trials, offers & renewals

    Subscription lifecycle auto-modeled
    Trial
    7 days
    Active
    $8.99/mo
    Grace
    billing retry
    Expired
    win-back
    entitlementpro · active
    iOS
    synced
    Android
    synced
    Web
    synced
    Explore Subscriptions

  5. Revenue analytics

    MRR, LTV, churn & cohort retention

    Cohort retentionby signup month
    M0M1M2M3M4M5
    Jan0
    1008271645955
    Jan1
    10079686156
    Jan2
    100847466
    Jan3
    1008070
    Jan4
    10083
    Explore Revenue analytics

  6. Experiments

    optimize loop

    A/B test pricing, copy & layouts

    Pricing experiment98% significant
    Control · $8.99/mo$1.42/view
    B · $6.99 + trial$1.67/view
    Revenue lift+18% · promote B
    Explore Experiments

  7. Webhooks & API

    Stream every event to your stack

    Events live
    purchase.completed$8.99
    subscription.renewed$59.99
    trial.started-
    subscription.canceled-
    payload.json
    {
  "type": "purchase.completed",
  "id": "evt_9f2",
  "product": "pro_monthly",
  "amount": 899,
  "app_user_id": "u_812"
}
    Explore Webhooks & API

Your revenue, settled

01

THE BUILDING BLOCKS

A complete stack.
However you put it together.

Start with the piece you need. The rest is ready when you are.

01 / CASHSDK

Paywalls

Design & ship paywalls over the air

Explore paywalls
02 / CASHSDK

Subscriptions

Entitlements, trials, offers & renewals

Explore subscriptions
03 / CASHSDK

Receipt validation

Server-side Apple & Google verification

Explore receipt validation
04 / CASHSDK

Revenue analytics

MRR, LTV, churn & cohort retention

Explore revenue analytics
05 / CASHSDK

Experiments

A/B test pricing, copy & layouts

Explore experiments
06 / CASHSDK

SDKs

iOS, macOS, Android, Web & Chrome

Explore sdks
07 / CASHSDK

Webhooks & API

Stream every event to your stack

Explore webhooks & api
08 / CASHSDK

Marketplace

Billing backends + 30+ app integrations

Explore marketplace
02

ONE CONSISTENT EXPERIENCE

A few lines.
A lot taken care of.

Your client handles the experience. CashSDK handles verification and purchase state. Your app gets one clear answer.

Explore the SDKs
App.swift
import CashSDK

// Configure once. Build something great.
CashSDK.configure(publishableKey: "csk_pk_your_key")

// Start a purchase with your store product ID.
let result = try await CashSDK.shared.purchase(
    "app.example.pro.yearly"
)

// Server-verified access, ready to use.
if CashSDK.shared.entitlements.isActive("pro") {
    unlockPro()
}
Native iOS · StoreKit 2UTF-8

From the first tap.
To what comes next.

Your first integration is the beginning of something good.

Start building for freeRead the docs