Relay: AI SMS Cart Recovery vs StyleBack
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 19, 2026 for Relay, Oct 13, 2026 for StyleBack.
The short answer
- Relay lists 7 features StyleBack’s listing doesn’t mention, including Automated workflows, Behavior tracking, Conversion tracking.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Spark
- · 400 credits per month ($0.1 overage)
- · AI two-way conversations, zero setup
- · Automatic discounts
- · Conversation logs (read-only)
- · Multi-currency support
- · Product sync every 7 days
Engage
- · 1,300 credits per month ($0.085 overage)
- · Everything in Spark, plus:
- · Product sync every 3 days
- · Up to 5 knowledge base documents
Convert
- · 3,850 credits per month ($0.075 overage)
- · Daily product sync
- · Everything in Engage, plus:
- · Priority support
- · Up to 15 knowledge base documents
Scale
- · 11.3K credits per month ($0.065 overage)
- · Everything in Convert, plus:
- · Founder-led onboarding
- · Product sync every 6 hours
- · Up to 50 knowledge base documents
Lifetime Access
- · Automated cart recovery emails
- · Custom delays & brand colors
- · Live inventory scarcity checks
- · Shopify AI product pairings
- · Unique discount code generator
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureWhen a customer leaves items at checkout, Relay sends them an SMS and starts a real two-way conversation. The AI knows your products, pricing, shipping, and policies. If a customer asks "does this come in blue?" or "how fast is delivery?", it answers with real data from your store. Relay tries to close at full price first. It only offers a discount if the customer genuinely needs a nudge.
StyleBack is a premium cart recovery concierge. Instead of sending generic reminders, StyleBack connects directly to your live data to send highly personalized sequences. It detects low inventory to create genuine scarcity, uses AI recommendations to suggest complementary products, and automatically generates unique discount codes to close the sale.
- AI sales agent trained to close, not just chat. Recovers carts through SMS.
- Auto-syncs products, pricing, policies, and inventory for real-time answers
- Margin-protecting discounts that only trigger as a last resort, not a default
- Multi-currency support that auto-detects the customer's local currency
- Uses live inventory data to inject low-stock warnings into emails.
- Suggests complementary products using Shopify's AI engine.
- Generates unique, temporary discount codes to close sales.
- Control delays, copy, and brand colors from a sleek dashboard.
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  Relay |  StyleBack |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | Relay | StyleBack |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 1 | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
FAQ
Relay and StyleBack: common questions
- What features does each app list that the other doesn’t?
- Relay lists 7 the others don’t mention, such as Automated workflows, Behavior tracking, Conversion tracking, Discount offers. StyleBack lists 1 the others don’t mention, such as Email reminders. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 19, 2026 for Relay, Oct 13, 2026 for StyleBack; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 19, 2026 for Relay, Oct 13, 2026 for StyleBack. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.