BillingOS mobile compatibility

Build BillingOS once, then project it into web and mobile

BillingOS should not be a desktop-only billing console. The contract layer must describe plans, entitlements, invoices, payment state, and provider evidence so mobile apps can render safe, resumable billing flows with native affordances.

Mobile implementation checklist

• Use BillingOS contracts for plans, subscriptions, invoices, entitlements, and payment evidence before choosing web or native presentation.
• Expose a compact subscription summary for mobile home, settings, and paywall surfaces.
• Make checkout and plan-change handoffs resumable after app backgrounding, deep links, provider redirects, or native purchase callbacks.
• Cache read-only invoice and entitlement evidence safely; never cache secrets, payment credentials, or mutable provider state as source of truth.
• Keep provider-specific flows in integrations such as Stripe, StoreKit, Google Play Billing, or crypto payment adapters.
• Log billing state transitions as auditable events that both web and mobile can display consistently.

Recommended shared snapshot

Mobile screens should receive a small resolved snapshot instead of duplicating provider APIs. Keep BillingMobileSnapshot derived from canonical BillingOS contracts and server-side provider evidence.

1type BillingMobileSnapshot = {
2  accountId: string;
3  planKey: string;
4  entitlementKeys: string[];
5  billingStatus: "active" | "trialing" | "past_due" | "canceled";
6  nextInvoiceAt?: string;
7  resumablePaymentIntentId?: string;
8};
9
10// Web and mobile consume the same resolved snapshot.
11// Native shells decide how to render tabs, sheets, gestures, and deep-link return UI.