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# SKProductSubscriptionPeriod

An object containing the subscription period duration information.

```
class SKProductSubscriptionPeriod
```

## Overview

A subscription period is a duration of time defined as some number of units, where a unit can be a [`SKProduct.PeriodUnit.day`](/documentation/StoreKit/SKProduct/PeriodUnit/day), [`SKProduct.PeriodUnit.week`](/documentation/StoreKit/SKProduct/PeriodUnit/week), [`SKProduct.PeriodUnit.month`](/documentation/StoreKit/SKProduct/PeriodUnit/month), or [`SKProduct.PeriodUnit.year`](/documentation/StoreKit/SKProduct/PeriodUnit/year).

For example, a subscription period of two weeks has a [`unit`](/documentation/StoreKit/SKProductSubscriptionPeriod/unit) of a [`SKProduct.PeriodUnit.week`](/documentation/StoreKit/SKProduct/PeriodUnit/week), and a  [`numberOfUnits`](/documentation/StoreKit/SKProductSubscriptionPeriod/numberOfUnits) equal to `2`.

## Topics

### Getting Subscription Period Details

[`numberOfUnits`](/documentation/StoreKit/SKProductSubscriptionPeriod/numberOfUnits)

The number of units per subscription period.

[`unit`](/documentation/StoreKit/SKProductSubscriptionPeriod/unit)

The increment of time that a subscription period is specified in.

[`SKProduct.PeriodUnit`](/documentation/StoreKit/SKProduct/PeriodUnit)

Values representing the duration of an interval, from a day up to a year.


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