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Best Works with Shop's sign in features Shopify apps in 2026 [Updated]

The best Shopify apps for Shop's sign in features help merchants capture leads and grow their marketing lists through engaging tools like quizzes, pop-ups, and forms. From Octane AI's product recommendation quizzes to Wheelio's gamified pop-ups, these apps integrate seamlessly with email and SMS marketing platforms like Klaviyo. With customizable forms and targeted lead capture solutions, merchants can build subscriber lists while delivering personalized experiences that convert visitors into customers.
Name Rate on Shopify Price Free trial Key features
  • #1. AI marketing and customer service automation for email marketing, SMS, and WhatsApp to grow faster.

    Klaviyo: Email Marketing & SMS
    Klaviyo: Email Marketing & SMS

    Klaviyo: Email Marketing & SMS

    4.7 (2877)
    on
    by Klaviyo
    Free to install
    Klaviyo is an AI-first B2C CRM that syncs your Shopify data in real-time, so every email, SMS, and WhatsApp message reflects what's happening in your store right now. Over 117,000 brands use Klaviyo to create personalized marketing campaigns that turn browsers into buyers. The platform unifies data from 350+ integrations and uses AI Agents to automate workflows and build on-brand campaigns. Marketing Agent reads your site and creates launch-ready content, while smart segmentation uses historical and real-time data to target the right customers. Drive conversions with email marketing, SMS, WhatsApp messages, mobile push notifications, and pop-ups. Customer Hub and Customer Agent turn service moments into shopping opportunities, helping you grow faster with automated, personalized customer experiences across every touchpoint.
  • #2. Boost Sales with AI Quizzes & Funnels That Guide Shoppers, Personalize Products, & Drive Conversions

    Octane AI: Advanced Quiz Maker
    Octane AI: Advanced Quiz Maker

    Octane AI: Advanced Quiz Maker

    4.8 (192)
    on
    From $50/month | Free trial available
    Octane AI helps DTC brands convert shoppers into sales with AI-powered quizzes and smart funnels. Create personalized product recommendations automatically using advanced quiz features that guide customers to the right products at the right moment. Collect zero-party data to build rich customer profiles and deliver tailored shopping experiences that reduce returns. The app includes a Shopping Assistant that displays quizzes in popups, Smart Products for immediate recommendations, Smart Copy for personalized quiz results, and an Image Analyzer where customers upload photos for AI analysis like shade matching. Optimize conversions with built-in A/B testing and performance tracking. Works seamlessly with Klaviyo, Postscript, Attentive, and other platforms to maximize your marketing efforts.
  • #3. Grow your contact list and convert new leads with Shopify’s customizable forms tool.

    Shopify Forms
    Shopify Forms

    Shopify Forms

    4.4 (656)
    on
    by Shopify
    Free
    Create professional forms that convert visitors into valuable leads with this customizable Shopify forms builder. Design both inline and pop-up forms to collect wholesale inquiries, newsletter signups, and customer information. Match your store's branding with custom colors and images, offer discount incentives, and reach global customers with multi-language support. The forms integrate seamlessly with Shopify's customer data platform, letting you build detailed profiles and track form performance. Securely manage submissions, segment your audience, and use insights to improve conversion rates. Perfect for growing your contact list and generating qualified leads that turn into sales.
  • #4. Boost your email and SMS lead generation with gamified fully customizable pop-up forms.

    Original Wheelio spin pop‑ups
    Original Wheelio spin pop‑ups

    Original Wheelio spin pop‑ups

    4.5 (197)
    on
    From $14.92/month | Free trial available
    Make email and SMS lead collection engaging with interactive gamified pop-up forms. Choose from multiple game styles including wheel spins, scratch cards, and slot machines to capture visitor information. The pop-ups help you collect email addresses, SMS numbers, push notification subscribers, and messenger leads while reducing lost traffic. While offering advanced customization options and features, the forms remain simple to set up and won't slow down your website. Connect easily with your preferred email and SMS marketing services through various integration options. Turn casual visitors into leads by making sign-ups fun and rewarding for your site visitors.
  • #5. Email & SMS Lead Capture | Highly-Targeted Pop-Ups | Personalized Website Experiences that CONVERT

    Justuno ‑ Email & SMS Pop ups
    Justuno ‑ Email & SMS Pop ups

    Justuno ‑ Email & SMS Pop ups

    5.0 (2)
    on
    by Justuno
    Free plan available | Free trial available
    Justuno helps online stores convert visitors into customers through smart marketing tools and analytics. Create eye-catching email and SMS capture pop-ups, personalized website experiences, and targeted promotions that drive results. The platform offers advanced design options, visitor segmentation, and detailed conversion tracking. Engage shoppers with custom games, intelligent product recommendations, and exit offers to reduce cart abandonment. Whether you're building your email list, recovering lost sales, or creating personalized shopping experiences, Justuno delivers the marketing features you need to grow your online business and improve conversion rates.