Riptide GP: Renegade for Android or iOS
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https://play.google.com/store/apps/details?id=com.vectorunit.silver.googleplay
https://apps.apple.com/us/app/riptide-gp-renegade/id1090577736
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Also free for Kindle Fire @ Amazon
https://www.amazon.com/Vector-Unit-Inc-Riptide-GP/dp/B01KUB65AM/ref=mp_s_a_1_2?keywords=riptide+gp&qid=1567187386&s=gateway&sr=8-2
