CashSDKCashSDK

BUILT FOR UTILITIES

Small app.
Big possibilities.

Ship a useful tool and a straightforward way to pay for it. Test trials, annual plans, or a lifetime unlock with one purchase integration.

Build your purchase experienceExplore paywalls
Lifetime unlocksFree trialsAnnual upgrades
Useful software. Thoughtful purchases.
THE PURCHASE MODELTrial + annual + lifetimeentitlement utility_proactive

How the category prices

Three ways to sell Pro, running at the same time.

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

PURCHASE PLAYGROUNDFictional app · sample offers
01 / THE OFFER

Meet paperplane

Try a purchase. See what happens next.

One purchase flow.
Entirely your experience.
paperplane
COMMON GROUNDCOFFEE & GOOD COMPANY
Flat white $4.50
Almond croissant $4.00
Total $8.50
THANK YOU. SEE YOU TOMORROW.
All the details. Captured.
Everyday tools · premium

Life, a little more sorted.

Scan. Sign. Send. You’re done.

Auto-renews · cancel anytime · restore purchase
Interactive concept · no real purchase
02 / BEHIND THE SCREEN
PREVIEW EVENT
purchase.started
app
paperplane
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 paperplane

From first tap to all-access.

01Discover
9:41
paperplane
COMMON GROUNDCOFFEE & GOOD COMPANY
Flat white $4.50
Almond croissant $4.00
Total $8.50
THANK YOU. SEE YOU TOMORROW.
All the details. Captured.
YOUR DAY, A LITTLE LIGHTER

From paper to possibility.

Pick up where you left off
The weekend receipts4 scans · Ready to export
Signed, sealed, sortedYour document workspace
Everything in its placeSmart folders, less filing

Give them something to love.

02Upgrade
paperplane
COMMON GROUNDCOFFEE & GOOD COMPANY
Flat white $4.50
Almond croissant $4.00
Total $8.50
THANK YOU. SEE YOU TOMORROW.
All the details. Captured.
Everyday tools · premium

Life, a little more sorted.

Scan. Sign. Send. You’re done.

Auto-renews · cancel anytime · restore purchase

An upgrade that feels at home.

03Enjoy
9:41
paperplane
COMMON GROUNDCOFFEE & GOOD COMPANY
Flat white $4.50
Almond croissant $4.00
Total $8.50
THANK YOU. SEE YOU TOMORROW.
All the details. Captured.
Premium unlocked
YOUR DAY, A LITTLE LIGHTER

Your documents are ready to go.

Pick up where you left off
The weekend receipts4 scans · Ready to export
Signed, sealed, sortedYour document workspace
Everything in its placeSmart folders, less filing

Make the next tap count.

Original paperplane concept · Interactive screens · No real purchases

Why CashSDK fits utilities

One SDK for the whole Pro money stack.

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

Paywalls you A/B over the air

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

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

Experiment on price & trial

Run holdouts on trial length and annual discount. Measure trial-to-paid and revenue per install, not vibes.

Explore

Subscriptions & free trials

Monthly, annual, and lifetime SKUs with native free trials and intro offers. Renewals, upgrades, and grace handled server-side.

Explore

Validated receipts

Every Apple and Google receipt is verified server-side into a clean Pro 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 trials and intro offers honored natively.

Built for the whole stack

Sell Pro three ways from one integration.

3Models: annual/monthly, free trial, lifetime
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 utility paywall that converts

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

Ship your paywallRead the SDK quickstart →