# Save payment methods for purchase later

Save payment methods to charge payers after a set amount of time. For example, you can offer a free trial and charge payers after the trial expires. Payers don't need to be present when charged. No checkout required.

## Payment methods

### JavaScript SDK
Integrate client-side or server-side. Saves PayPal and credit or debit cards.

### Payment Method Tokens API
Integrate server-side. Saves PayPal and credit or debit cards.

### Android SDK
Integrate client-side. Saves PayPal and credit or debit cards.

### iOS SDK
Integrate client-side. Saves PayPal and credit or debit cards.

## JavaScript SDK best practice

If you have a [client-side integration](/docs/checkout/standard/), you can only save PayPal Wallets. We recommend a [client-side and server-side integration](/docs/checkout/advanced/) to save more payment methods.

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