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Ecommerce App Glossary

200+ terms defined in plain English. From API to Zero-party data, master the language of ecommerce apps.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A

API (Application Programming Interface)

A set of protocols that allows different software applications to communicate. Ecommerce apps use APIs to sync data between your store and external services (e.g., Shopify API lets apps read product data).

Technical

Abandoned Cart Recovery

Apps that automatically send emails or SMS to customers who added items to cart but didn't complete checkout. Common tools: Klaviyo, Omnisend.

Marketing

App Conflict

When two or more apps interfere with each other, causing bugs, slowdowns, or broken features. Most common with checkout, theme customization, and inventory sync apps.

Troubleshooting

AOV (Average Order Value)

Total revenue divided by number of orders. Upsell and bundle apps aim to increase AOV by encouraging customers to buy more per transaction.

Metrics

App Store (Shopify/WooCommerce)

Official marketplace where merchants discover and install apps. Shopify App Store has 8,000+ apps; WooCommerce uses the WordPress plugin repository.

Platform

Attribution

Tracking which marketing channel (email, ads, social) led to a sale. Marketing apps use first-click, last-click, or multi-touch attribution models.

Marketing

B

Bundle App

Lets customers buy multiple products together at a discount. Native vs app-based: Shopify Bundles is free but limited; apps like Biscuit Bundles offer advanced options.

Sales

BFCM (Black Friday Cyber Monday)

Peak shopping weekend requiring specialized apps for countdown timers, flash sales, and high-traffic optimization. Avoid installing untested apps right before BFCM.

Events

Back-in-Stock Alerts

Apps that notify customers when sold-out items are restocked. Popular tools: Peppyduck, Back in Stock.

Inventory

Bulk Editor

App for editing multiple products at once (prices, tags, descriptions). Top choices: Ablestar (undo feature), Matrixify (Excel export/import).

Productivity

BNPL (Buy Now Pay Later)

Payment apps that let customers split purchases into installments. Examples: Klarna, Afterpay, Affirm. Fees range from 2-6% per transaction.

Payments

Bloat (App Bloat)

When too many apps slow down your store by adding unnecessary JavaScript and CSS. Rule of thumb: keep under 10-12 active apps.

Performance

C

CAPI (Conversions API)

Server-side tracking that sends conversion data directly from your server to ad platforms (Meta, TikTok). More accurate than pixel tracking due to iOS privacy changes.

Marketing

CDN (Content Delivery Network)

Network of servers that deliver your store's content faster by serving files from the closest location to each visitor. Shopify includes CDN; WooCommerce requires plugins like Cloudflare.

Performance

Checkout Extension

Apps that add features to checkout page (upsells, gift messages, warranties). Shopify Plus required for full checkout customization.

Checkout

Core Web Vitals

Google's page speed metrics: LCP (loading), FID (interactivity), CLS (layout shift). Heavy apps hurt these scores and SEO rankings.

Performance

Cross-sell

Recommending complementary products (e.g., phone case with phone). Apps: ReConvert, Frequently Bought Together.

Sales

CSV Import/Export

Bulk editing via spreadsheet. Native Shopify limits to 50,000 variants; Matrixify handles millions. Essential for large catalogs.

Productivity

D

Dropshipping App

Automates product imports and order fulfillment from suppliers. Top apps: Spocket, Modalyst, Zendrop. Watch for long shipping times.

Fulfillment

Dynamic Pricing

Apps that change prices based on rules (member discounts, bulk pricing, time-based sales). Examples: Bold Pricing, Wholesale Pricing Discount.

Pricing

Discount Stack

Allowing multiple discounts to apply simultaneously (e.g., 10% off + free shipping). Shopify limits stacking; apps like Discounted Pricing bypass this.

Promotions

Data Feed

Formatted product catalog sent to ad platforms (Google Shopping, Meta Catalog). Apps like Feedonomics optimize feeds for better ad performance.

Marketing

E

Email Marketing App

Automated email campaigns (welcome series, abandoned cart, post-purchase). Leaders: Klaviyo (advanced), Omnisend (balanced), Mailchimp (beginner-friendly).

Marketing

ESP (Email Service Provider)

Third-party service that sends your marketing emails. Key features: segmentation, automation, A/B testing, SMS integration.

Marketing

Exit-Intent Popup

Modal that appears when user moves to close tab, offering discount to reduce cart abandonment. Apps: Privy, OptiMonk.

Conversion

ERP Integration

Connecting store to enterprise resource planning system for advanced inventory and order management. Apps: Katana, Cin7.

Operations

F

Fulfillment App

Manages order processing, shipping label creation, and tracking. Native: ShipStation, Shippo. 3PL integration: ShipBob, Fulfillment by Amazon.

Fulfillment

Flash Sale App

Creates time-limited discounts with countdown timers. Must handle traffic spikes during sale without crashing checkout.

Promotions

Form Builder

Custom forms for contact, wholesale inquiry, product customization. WooCommerce: WPForms, Gravity Forms. Shopify: Hulk Form Builder.

Engagement

First-Party Data

Customer data you collect directly (emails, purchase history). Apps that build owned lists are more valuable post-iOS14 tracking changes.

Data

G

Gift Card App

Digital gift certificates customers can purchase and redeem. Shopify native requires plan upgrade; apps like Rise.ai add advanced features.

Sales

GDPR Compliance

EU privacy regulation requiring cookie consent and data protection. Apps: Cookiebot, OneTrust. Non-compliance fines up to €20M.

Legal

Google Shopping Feed

Product catalog synced to Google Merchant Center for Shopping ads. Native Shopify integration limited; apps like Simprosys offer advanced optimization.

Marketing

Geolocation App

Auto-detects visitor country and adjusts currency, language, or shipping options. Examples: Geolocation, Langify.

International

H

Headless Commerce

Separating store backend (Shopify/WooCommerce) from frontend display. Requires custom development but enables ultimate customization. Apps: Hydrogen (Shopify), WooCommerce REST API.

Technical

Heatmap App

Visual recording of where visitors click and scroll. Identifies confusing UX. Tools: Lucky Orange, Hotjar.

Analytics

HTTP/2 & HTTP/3

Modern protocols that load multiple files simultaneously. Shopify native; WooCommerce requires LiteSpeed Cache or Cloudflare.

Performance

I

Inventory Sync

Real-time stock updates across multiple sales channels (store, Amazon, eBay). Prevents overselling. Apps: Sellbrite, Inventory Source.

Inventory

Inline Editing

Changing product details directly from store admin without opening individual pages. Shopify Flow, Ablestar enable this for bulk changes.

Productivity

iOS14 Attribution

Apple privacy update that broke pixel tracking. Apps using CAPI (Conversions API) adapt by sending data server-side.

Marketing

Image Optimizer

Compresses product images without quality loss. Speeds up site, improves SEO. Free: TinyIMG. Paid: Crush.pics.

Performance

J

JavaScript Render-Blocking

When app scripts prevent page from loading until they finish executing. Causes slow LCP scores. Check with Google PageSpeed Insights.

Performance

Judge.me

Popular review app with photo reviews, Q&A, and review request automation. Free plan available; paid adds advanced features.

Reviews

K

Klaviyo

Premium email/SMS marketing platform with advanced segmentation and automation. Free up to 250 contacts; paid starts $20/mo.

Marketing

Kit Builder

Apps that let customers create custom product bundles (e.g., build-your-own gift box). Examples: Simple Bundles, Bundler.

Sales

Keyword Optimization

SEO apps that suggest product title and description improvements. Tools: Plug in SEO, SEO Manager.

SEO

L

LCP (Largest Contentful Paint)

Core Web Vital measuring loading performance. Good: under 2.5s. Apps with heavy images or scripts increase LCP.

Performance

Loyalty Program App

Points-based rewards to encourage repeat purchases. Free: Smile.io (up to 200 orders/mo). Paid: LoyaltyLion, Yotpo.

Retention

Live Chat App

Real-time customer support widget. Free: Tidio, Shopify Inbox. Enterprise: Gorgias, Zendesk.

Support

Low-Stock Alert

Notifies admin when inventory falls below threshold. Prevents stockouts. Built into most inventory apps.

Inventory

M

Metafield

Custom data fields in Shopify (e.g., fabric type, care instructions). Display via theme code or apps like Metafields Guru.

Technical

Multi-Currency App

Auto-converts prices based on visitor location. Shopify Payments includes native; third-party: BEST Currency Converter.

International

Marketplace Integration

Syncs inventory to Amazon, eBay, Walmart. Apps: CedCommerce, Codisto.

Sales Channels

Mobile Optimization

Ensuring store looks good on phones. Test with Google Mobile-Friendly Test. Watch for apps that break mobile layout.

UX

N

Native App

Feature built into platform (no install needed). Example: Shopify Bundles, Shopify Email. Usually lighter than third-party alternatives.

Platform

Newsletter Popup

Email signup form shown to new visitors. Optimize: offer discount, limit frequency, mobile-friendly. Apps: Privy, Klaviyo.

Marketing

Net Promoter Score (NPS)

Customer satisfaction metric (1-10 rating). Apps send automated surveys post-purchase.

Analytics

O

Omnisend

Email/SMS marketing app with pre-built automation workflows. Free up to 250 contacts; good Klaviyo alternative for budget-conscious stores.

Marketing

One-Click Upsell

Post-purchase offer without re-entering payment. Shopify Plus required. Apps: ReConvert, Zipify OCU.

Sales

Order Tracking Page

Custom branded page showing shipment status. Reduces "where is my order" emails. Apps: Tracktor, Rush.

Fulfillment

OAuth

Secure authorization protocol apps use to access your store data. Never share API passwords directly.

Security

P

Page Builder

Drag-and-drop editor for custom pages. Popular: PageFly, Shogun, GemPages. Warning: heavy apps hurt site speed; consider using native theme sections instead.

Design

Product Recommendations

AI-powered "you may also like" suggestions. Shopify native (free); advanced: Rebuy, LimeSpot.

Sales

POD (Print on Demand)

Custom products printed when ordered. No inventory needed. Top apps: Printful, Printify, Gelato.

Fulfillment

Pre-Order App

Sell out-of-stock items with delayed fulfillment. Apps: PreProduct, Bold Pre-Order.

Sales

PCI Compliance

Payment security standard. Using Shopify Payments = automatic compliance; external gateways require annual audit.

Security

Q

Quantity Breaks

Volume discounts (e.g., buy 3+ save 15%). Native Shopify limited; apps: Kaching Bundle Quantity Breaks.

Pricing

Quick View

Product details popup from collection page (no page navigation). Speeds up browsing. Apps: Smart Product Viewer.

UX

Queue Management

Virtual waiting room during traffic spikes (BFCM). Prevents site crashes. Apps: Queue-Fair.

Performance

R

Referral Program

Customers earn rewards for referring friends. Apps: ReferralCandy, Smile.io Rewards.

Marketing

Review App

Collect and display customer reviews. Free: Judge.me, Product Reviews. Paid: Yotpo (advanced features).

Social Proof

Retargeting Pixel

Code snippet tracking visitors for ad campaigns. Meta Pixel, TikTok Pixel. Install via app or manually in theme.

Marketing

Returns Management

Automated return labels and tracking. Apps: Loop Returns, Returnly.

Operations

ROI Calculator

Tool measuring app cost vs revenue increase. Key metric: payback period (how long until app pays for itself).

Analytics

S

Subscription App

Recurring billing for replenishable products. Free: Seal Subscriptions (up to 100 subscribers). Paid: Recharge, Bold Subscriptions.

Revenue

SEO App

Optimizes meta titles, alt tags, schema markup. Apps: Plug in SEO, Smart SEO.

SEO

Shipping Rates Calculator

Real-time carrier rates at checkout. Native Shopify/WooCommerce; advanced apps: ShipStation, Advanced Shipping Rules.

Fulfillment

Swatch App

Color/pattern thumbnails for product variants. Native Shopify limited; apps: Globo Product Options.

UX

SMTP

Protocol for sending email. WooCommerce requires SMTP plugin (WP Mail SMTP) to ensure transactional emails deliver.

Technical

SSL Certificate

Encrypts data between customer and store. Mandatory for payment processing. Shopify includes free; WooCommerce requires host setup.

Security

T

Theme Sections

Shopify's native drag-and-drop blocks. Faster alternative to page builders. OS 2.0 themes have advanced section support.

Design

TikTok Shop Integration

Sync products to TikTok for in-app shopping. Apps: TikTok Shopping, Shopify TikTok channel.

Sales Channels

Trust Badges

Security icons (SSL, money-back guarantee) reducing checkout anxiety. Free apps: Trust Badge Master.

Conversion

Translation App

Multi-language store support. Free: Shopify Translate & Adapt. Paid: Langify, Weglot.

International

Two-Factor Authentication (2FA)

Extra login security layer. Mandatory for Shopify admin; WooCommerce requires plugin (Wordfence, iThemes Security).

Security

U

Upsell App

Offers higher-priced alternatives or add-ons. Pre-purchase: Bold Upsell. Post-purchase: ReConvert, Zipify.

Sales

Urgency Timer

Countdown to create scarcity (e.g., "Sale ends in 2 hours"). Ethical use recommended. Apps: Hextom Countdown Timer.

Conversion

User-Generated Content (UGC)

Customer photos/videos used in marketing. Apps: Loox, Stamped import from Instagram.

Social Proof

V

Variant Limit

Maximum product options. Shopify: 100 variants/product, 3 options/variant. Apps like Infinite Options bypass limits.

Platform

Video App

Embed product videos on collection pages. Native Shopify supports YouTube/Vimeo; apps add TikTok, Instagram Reels.

Content

Volume Discount

Tiered pricing (e.g., 10% off 3+, 20% off 5+). Apps: Kaching, Discount Ninja.

Pricing

VPN Detection

Blocks fraudulent orders from anonymized IPs. Apps: FraudLabs Pro, Signifyd.

Security

W

Webhook

Automated notification sent to external apps when events occur (new order, product update). Powers app integrations.

Technical

Wholesale App

Separate pricing tiers for bulk buyers. Apps: Wholesale Pricing Discount, Bold Custom Pricing.

B2B

Wishlist App

Saved items for future purchase. Free: Wishlist King. Paid: Swym Wishlist (advanced features).

UX

WooCommerce

Open-source WordPress ecommerce plugin. Flexible but requires more setup than Shopify. Plugin ecosystem: 50,000+ options.

Platform

Workflow Automation

Apps that auto-execute tasks (tag VIP customers, unpublish sold-out items). Shopify Flow (Plus only), Zapier.

Productivity

Z

Zero-Party Data

Information customers intentionally share (quiz results, preferences). More reliable than cookies. Apps: Octane AI, Typeform.

Data

Zapier

Integration platform connecting 5,000+ apps. Automate without coding (e.g., new Shopify order → Google Sheet row).

Automation

Zip Code Validator

Checkout validation ensuring accurate shipping addresses. Reduces failed deliveries. Apps: AddressFinder, Checkout Address Validator.

Fulfillment