You can add SFD to portfolio in Blockfolio mobile app!
The world’s most popular Bitcoin & Cryptocurrency
portfolio tracker. 100% free.

? Website: https://blockfolio.com/
? Android: https://play.google.com/store/apps/details?id=com.blockfolio.blockfolio&hl=en_US
? iOS: https://itunes.apple.com/us/app/blockfolio-bitcoin-altcoin/id1095564685?mt=8