CashSDKCashSDK

BUILT FOR FINANCE

Their financial future.
Your solid foundation.

Make premium budgeting and financial tools easy to access. Build annual subscriptions on verified purchases and clear entitlement states.

Build your purchase experienceExplore paywalls
Verified purchasesAnnual billingRevenue visibility
Every transaction accounted for.
THE PURCHASE MODELTrial → annual subscriptionentitlement finance_plusactive

How the category prices

One subscription, three conversion levers.

Choose an offer. Try the screen. Follow the purchase from checkout to access.

PURCHASE PLAYGROUNDFictional app · sample offers
01 / THE OFFER

Meet northstar

Try a purchase. See what happens next.

One purchase flow.
Entirely your experience.
northstar
YOUR BIG PICTURE$24,850.60↗ 8.4% this month
Rainy day fund $6,200 / $8,000
SAMPLE ACCOUNT
Personal finance · premium

See the bigger picture.

Your money, with a clear direction.

7-day free trial, then your plan renews. Cancel anytime.
Interactive concept · no real purchase
02 / BEHIND THE SCREEN
PREVIEW EVENT
purchase.started
app
northstar
product
Annual
status
selected
Store checkout → CashSDK → your app

Original app concepts. Sample prices. Every preview runs locally.

Paywall shapes

The upgrade is part of the experience.

Discover the app. Choose premium. See what opens up.

A DAY INSIDE northstar

From first tap to all-access.

01Discover
9:41
northstar
YOUR BIG PICTURE$24,850.60↗ 8.4% this month
Rainy day fund $6,200 / $8,000
SAMPLE ACCOUNT
GOOD MORNING, JORDAN

Your money. A clearer view.

A little clarity for today
The bigger pictureYour accounts, together
A goal worth saving forJapan trip · 68% saved
Make this month countYour monthly spending plan

Give them something to love.

02Upgrade
northstar
YOUR BIG PICTURE$24,850.60↗ 8.4% this month
Rainy day fund $6,200 / $8,000
SAMPLE ACCOUNT
Personal finance · premium

See the bigger picture.

Your money, with a clear direction.

7-day free trial, then your plan renews. Cancel anytime.

An upgrade that feels at home.

03Enjoy
9:41
northstar
YOUR BIG PICTURE$24,850.60↗ 8.4% this month
Rainy day fund $6,200 / $8,000
SAMPLE ACCOUNT
Premium unlocked
GOOD MORNING, JORDAN

Your financial picture, complete.

A little clarity for today
The bigger pictureYour accounts, together
A goal worth saving forJapan trip · 68% saved
Make this month countYour monthly spending plan

Make the next tap count.

Original northstar concept · Interactive screens · No real purchases

Why CashSDK fits finance

One SDK for the whole subscription flow.

Design the offer. Verify the purchase. Keep access in sync.

Paywalls you A/B over the air

Design the annual-vs-monthly upgrade in the dashboard, publish it without an app release, and change copy, trial length, and price for any cohort instantly.

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

Experiment on trial & price

Test 7-day vs 14-day trials and annual discounts as holdouts. Measure trial-to-paid conversion and revenue per install, not vibes.

Explore

Subscriptions & renewals

Annual and monthly plans, intro offers, and renewals tracked server-side into a clean entitlement your app can trust.

Explore

Validated receipts

Every Apple and Google receipt is verified server-side into a clean entitlement, with no receipt server to run.

Explore

Localized pricing, both stores

One catalog prices in local currency across the App Store and Google Play, with free trials and intro offers honored natively.

Built for the whole flow

Turn a free trial into recurring revenue.

TrialsFree trials & intro offers, honored natively
1 SDKSwift, Kotlin & REST
0Receipt servers to run
ONE CONNECTED PURCHASE FLOW
CashSDK
CashSDK
Store receipt
pro active
A purchase startsproduct: "pro.yearly"A familiar checkout, in your app.
Illustrative flow no live transactions

Ship a budgeting paywall that converts

Your brand, your offers, your purchase flow. Built with CashSDK.

Ship your paywallRead the SDK quickstart →