Influencer-tech startup ChannelMeter is launching an app that lets YouTubers get paid early — and it's not the only fintech going after creators

· Startups are eyeing social-media stars as potential customers for financial services products as the influencer industry continues to grow. 
· Last month, the fintech startup Karat introduced a custom charge card for influencers, looking at a creator's social metrics, like follower count and engagement rates, rather than...