To find the latest version number for Smart Receipts, please check the app stores directly:
Android: Visit the Smart Receipts listing on the Google Play Store and check the "What's New" or app info section for the current version number
iOS: Visit the Smart Receipts listing on the Apple App Store and check the version history section for the current version number.
You can also check your currently installed version by going to the app's Settings screen within Smart Receipts.