Here are Shopify apps that offer advanced targeting for promotions, grouped by use case so you can pick what fits your needs.

On-site popups, banners & personalization (show targeted promos on specific pages, by cart, customer, traffic source, device, etc.)

• Justuno — very granular targeting (cart value, specific items/variants, new vs returning customers, past order history), auto-apply coupons & dynamic content (recommendations, tiered offers). Great for on-site personalization and cart-threshold promotions. (justuno.com)
• OptiMonk — drag‑and‑drop popups with Klaviyo/analytics integrations, built-in audience targeting (geolocation, pages, Klaviyo segments, traffic source), A/B testing and revenue analytics. Good when you need tight integration with email segments. (apps.shopify.com, support.optimonk.com)
• Privy — popups, wheels, free-shipping bars and cart‑saver displays with advanced popup targeting (exit intent, cart value, returning visitors) plus email/SMS flows. Good if you want combined on-site capture + email/SMS automation. (apps.shopify.com)
• Hextom Quick Announcement Bar / Free Shipping Bar — lightweight banners and bars with page/product targeting, geo/device targeting, scheduling and campaign rules for promo banners and free-shipping thresholds. Good for simple sitewide banners with rules. (apps.shopify.com, open.store)

Targeted discounts & coupon engines (apply discounts only to segments, products, carts or customer tags)

• Vivid Discounts Manager PRO (Advanced Discounts Manager) — create complex automatic discount rules (cart value, total spent, customer tags, country, device, products/collections) to auto-apply or restrict offers to segments. Ideal if Shopify native discounts are too limited. (apps.shopify.com)
• Bold / Bold Price Rules (Bold Discounts & Price Rules) — schedule flash sales, customer‑specific and location‑specific pricing and advanced promotion rules (used heavily by larger merchants and B2B). Good for storewide scheduled sales and complex price rules. (apps.shopify.com, boldcommerce.com)
• Klip Coupons (Klip: Product Page Coupons) — clippable product-page coupons with targeting by customer tags, email lists, limits & minimum spend; useful for Amazon-style coupon experiences. (klipcoupons.com, taranker.com)

Ad / retargeting platforms (target visitors off-site and run prospecting/retargeting with audience segmentation)

• AdRoll — cross‑channel retargeting (display, social, programmatic), segment & event‑based targeting, lookalikes and dynamic product ads. Good when you want unified retargeting across web + social from Shopify. (apps.shopify.com)
• Adwisely / Adwisely-like tools — automated social & Google ad builders that create & optimize campaigns and support behavior-based audiences/retargeting; good for hands-off ad campaigns tuned by store behavior. (meetanshi.com, socioh.com)
• Fixel (and other AI scoring tools) — behavioral scoring to segment visitors by engagement (time, scroll, clicks) and build more precise retargeting/lookalike audiences for ads. Useful if you want to avoid wasting ad spend on low-intent visitors. (shineapps.co)

How to choose quickly

• If you need rich on-site personalization (cart-value, item-based triggers, auto‑apply coupons): try Justuno or OptiMonk first. (justuno.com, apps.shopify.com)
• If you need complex, automatic discounts visible only to selected customers (tags, lifetime spend, country): use Vivid, Klip or Bold. (apps.shopify.com, klipcoupons.com, boldcommerce.com)
• If you want to retarget visitors across the web or build lookalikes from high-intent users: consider AdRoll, Adwisely or Fixel. (apps.shopify.com, meetanshi.com, shineapps.co)

Practical next steps

1. Pick 1 app from the category that matches your immediate goal (e.g., on-site popups to raise AOV vs targeted coupons to protect margins).
2. Use free trials / free tiers to test targeting rules and confirm the app can read the signals you need (UTMs/traffic source, Shopify customer tags, past orders, cart value, device, geolocation). (Most apps list these capabilities on their app pages — check the feature list before installing.) (justuno.com, apps.shopify.com)
3. A/B test variations (offer level, audience rule, timing) and measure revenue impact (not just clicks or signups).

If you want, tell me which kind of promotion you’re planning (site banner vs popup vs targeted discount vs retargeting ads) and I’ll recommend 2–3 apps to trial and a short test plan you can run this week.