This SEO-ready summary of “9 Best AI Apps for Ecommerce” turns the video into a practical automation playbook for growing an online store in 2025. It covers nine high-impact tools and exactly how founders use them to save time, boost conversion rate (CR), and scale content. Shopify Sidekick works as an on-store AI assistant to build custom theme sections, analyze conversion sources, and auto-create collections, product descriptions, and blogs from browsing behavior. Custom GPTs in ChatGPT become a brand-trained creative director using your SKUs, reviews, research, and proven marketing frameworks to generate Meta ads, landing pages, emails, and PDP copy. Voiceflow delivers 24/7 chat/voice support from a knowledge base, recommending products, surfacing discounts, and guiding checkout. HeyGen scales avatar-based videos with script-level gestures for rapid A/B testing. Opus Clip repurposes one long video into dozens of shorts with captions, hooks, and correct aspect ratios. Descript edits video by editing text (eye-contact, filler removal, overdub). Grain turns meetings into searchable summaries, highlights, and to-dos. Klaviyo AI builds flows, segments, and send-time predictions. NADN (agent workflows) connects Gmail/Slack for labeling, alerts, research, and reporting.