NotiSeen - Online Tracker is a free social networking app developed by Oguzhan YILMAZ for iPhone. With this app, users can track the online activities and last seen times of their family and children, with their consent.

The app offers a range of features including parental tracking, instant notifications, online and offline tracking, last seen time, record duration time, multiple number support, and detailed reports. Users can easily view the last seen time on the application and access historical records through detailed reports. The app also provides fast and accurate notifications for instant updates.

NotiSeen - Online Tracker offers premium member packages, including weekly and monthly subscriptions with support for multiple numbers. The subscription payments will be charged from the user's iTunes account and will continue until canceled and renewed. It's important to note that any unused portion of the free trial period will be forfeited when purchasing a premium subscription during the trial period.

To cancel the subscription, users can do so through their iTunes account settings. It is recommended to cancel the subscription 24 hours before the end of the current period to avoid being charged. The cancellation will take effect the day after the last day of the subscription period, and users will be downgraded to the free service.

For more information, users can refer to the app's Privacy Policy and Terms and Conditions, available on the developer's website. Subscription cancellation instructions can be found on Apple's support page.