NEXT U - Turn any product photo into a finished ad in one AI flow

Hi Product Hunt! 👋 I built NEXT U because making one ad shouldn't require four tools and three subscriptions. If you sell online, you know the drill: write copy in one app, generate images in another, stitch video in a third, hunt for music somewhere else — then pay monthly for all of them even in months you ship nothing. I did this for years as a freelance AI video creator, and I kept rebuilding the same workflow every single time. So I turned it into one flow: upload your product photo → get platform-tuned copy for FB/IG/TikTok → generate product and model shots (up to 4K) → generate video second by second → add AI music → auto-compose into vertical + horizontal MP4s, ready to post. About 10 minutes end to end. Two decisions I cared most about: • Pay-as-you-go, no subscription. 1 credit = $0.01, and you're only charged when a generation actually succeeds — failures are auto-refunded. • Guided, not a blank canvas. The 4-step wizard walks you from product photo to finished ad, so you don't need design or editing skills. Everything in the gallery on our homepage was generated by the platform itself — those are demos we made, not brand campaigns. 🎁 For the launch: the first 100 signups get 120 free credits (valid 7 days, no card required). The interface ships in English, 繁體中文, 日本語 and 한국어. I'd love your feedback — especially on which ad formats you'd want next. I'll be here all day answering questions!