Satinder Grewal is a Canada-based Vedic astrologer who also works in numerology and Vastu Shastra. He has developed a public-facing approach he describes as Quantum Astrology, exploring connections between quantum mechanics and astrological principles. He produces astrology-related video content and blog articles covering zodiac traits, remedies, and topics such as yantras for prosperity. He maintains an active social media presence under the name Astrologer Satinder.