Yes, you can share the SoFi app with a friend who does not currently have the SoFi app and both parties can earn 1000 SoFi Rewards points. The recipient must download the app and register with SoFi for both parties to receive their 1000 SoFi Rewards points.
All the details can be found in the 'Refer the App' Promotion.
There is a referral or welcome bonuses cumulative limit of $10,000 within any calendar year.