You will find the option to 'Become PRO' in the Settings tab. Tap "Learn More" to open the screen shown below. It will show you the major PRO features (such as unlimited exchange account connections, portfolio analytics, real-time prices, ability to sync 5 devices, monochrome mode, etc.) and the annual subscription fee in your local currency.
You can also purchase lifetime PRO subscription with a one-time payment. This option is however only available via the desktop app. Download our desktop app and sync it to your mobile device first and then purchase lifetime PRO on desktop.
Thank you for considering PRO!