50+
Shopify Apps Built
Private apps, public apps & theme extensions
WebtechnologyBD is a dedicated Shopify app development agency and certified Shopify Partner with 12+ years of experience. Our expert Shopify app developers build custom private apps, public Shopify App Store apps, theme app extensions, checkout extensions, and complex API integrations — using Node.js, Remix, React, Polaris, and the Shopify Admin GraphQL API. Whether you need to automate workflows, integrate your store with an ERP, or build a revenue-generating App Store product — we deliver under fixed-scope contracts with weekly demos and a 30-day post-launch warranty. See pricing →
Tech stack & APIs we use daily
As a certified Shopify app development company, we build apps for DTC brands, SaaS founders, and agencies worldwide. From simple custom Shopify apps that automate repetitive admin tasks, to complex multi-tenant public Shopify apps monetized on the App Store — our developers work with the full Shopify API surface including Admin GraphQL, Storefront API, Checkout Extensions, Shopify Functions, and the Billing API. Need to hire a Shopify app developer? We offer flexible project-based and retainer engagements.
Fixed-price quotes only — no hourly billing surprises. Every package includes 30-day free post-launch support and a money-back guarantee on the architecture design.
Admin tools, lightweight integrations, metafield managers, bulk editors — no App Store review needed.
ERP/CRM sync, multi-system integrations, complex workflows, automation engines, and data pipelines.
Full public app with OAuth, Billing API, GDPR webhooks, multi-tenant architecture, and App Store submission.
All prices are fixed — no hourly billing. Custom scope? Request a tailored quote →
Based on what 50+ store owners and SaaS founders hire us for first. Every one is a fixed-price, milestone-billed engagement.
Built exclusively for your store — automates workflows, integrates with your systems, and extends Shopify's native capabilities without limitations of off-the-shelf apps.
Fully review-ready public apps monetized on the Shopify App Store. Complete with OAuth, Billing API, GDPR webhooks, Polaris UI, and embedded admin dashboard.
Connect Shopify to your ERP, CRM, shipping platform, or custom backend — real-time order sync, inventory, customer data, and fulfillment automation.
Add your app's widgets to any merchant's theme using Shopify's App Blocks system — no theme code edits required, fully drag-and-drop in the Online Store editor.
Extend the Shopify checkout experience for Plus merchants — upsell widgets, custom fields, loyalty display, address validation, and post-purchase pages.
Explore our full Shopify Plus development capabilities.
Eliminate manual store tasks — auto-tag orders, trigger fulfillment, sync inventory, send alerts, update metafields, and schedule campaigns — all via custom Shopify apps.
One agency for every layer of the Shopify app ecosystem — so you don't juggle freelancers across Node, React, and API work.
Store-specific apps using Admin API, GraphQL/REST, embedded Polaris UI, and webhooks. No App Store review needed.
Fully monetized App Store apps with OAuth, Billing API, GDPR webhooks, embedded dashboard, and Shopify review readiness.
App Blocks & App Embeds for Online Store 2.0 themes — drag-and-drop widgets with zero theme code changes.
Checkout UI Extensions, post-purchase pages, custom fields, upsells, and Shopify Functions for Plus merchants.
Shopify ↔ NetSuite, SAP, Salesforce, HubSpot, Odoo, QuickBooks. Real-time sync with error logging and retry.
Custom carrier rates, label generation, ShipStation/EasyPost integrations, and multi-warehouse fulfillment routing.
Custom dashboards, automated reports, cohort analysis, and business intelligence tools on top of Shopify data.
Order tagging, inventory alerts, campaign triggers, metafield updates, Shopify Flow actions — fully automated.
Custom subscription billing, product bundles, loyalty points, referral rewards, and LTV-boosting retention tools.
Custom storefronts, headless commerce components, and buyer-facing apps using the Shopify Storefront GraphQL API.
API version migrations, Shopify CLI updates, bug fixes, security patches, and ongoing feature development on retainer.
Security audit, performance review, API deprecation fixes, and codebase modernization for existing Shopify apps.
Not happy with the initial architecture plan or app wireframes? We issue a full refund — no questions asked. We earn your trust before writing a single line of code. 50+ apps built, zero refund requests. Start your project →
Transparent, milestone-billed, weekly demos. You always know what's happening and can test at every stage.
30 min on Zoom or WhatsApp. We map your app's goals, APIs, data flows, and integrations. Fixed quote in 24 hours with a written scope.
We design the app's data model, API endpoints, webhook flows, and admin UI wireframes. You approve before development begins.
Built on a Partner Dev Store. Weekly demos on every sprint. You can interact with the live app at every milestone — no surprises at the end.
Full test coverage — edge cases, webhook reliability, OAuth flows, billing scenarios, and API rate limit handling. OWASP security checklist applied.
For public apps: we submit to the Shopify App Store with partner dashboard setup, listing copy, and screenshot assets. For private apps: instant install on your store.
Post-launch bug fixes, API version monitoring, and screen-recorded documentation for your team. Ongoing maintenance available on a separate retainer.
The most common question we get. Here's the honest side-by-side — we'll recommend the right path on your free discovery call.
Built exclusively for your store. No App Store review. Fastest path to a tailored solution for unique workflows and integrations.
Available to all Shopify merchants. Monetized via the Shopify Billing API. Requires App Store review and OAuth.
12+ years building e-commerce. 50+ apps. Dedicated team — Node dev, React dev, QA, and project manager.
As a certified Shopify Partner agency, we have access to Partner Dev Stores, Shopify app review support, and stay current with API deprecations — no disruptions to your app after Shopify platform updates.
Business hours WhatsApp + email. No agency black-box silence. You get a real developer on every message, not a support ticket queue.
No hourly billing surprises. Clear scope, clear price, clear timeline — agreed in writing before development starts.
We cover 4–6 hours of overlap with your team every day — plus fast async communication for everything else.
Not happy with the architecture design or initial scope? Full refund — no questions asked. We earn your trust before writing a line of code.
40–60% lower than US/UK agencies — same code standards, security practices, and design taste as top-tier app studios.
"They built a private app that syncs our Shopify orders with NetSuite in real-time. Zero data loss, zero downtime. Saved our team 20 hours a week."
"We launched our subscription app on the Shopify App Store in 6 weeks. Passed review on the first submission — billing, OAuth, GDPR, all handled perfectly."
"The checkout extension they built for our Plus store added $14 AOV uplift in the first month. Upsell widget loads in under 80ms — no impact on conversion."
Still wondering? Ping us on WhatsApp — we reply in under an hour.
Tell us what you need — private app, public App Store app, API integration, theme extension, or checkout extension — and we'll send a fixed-price quote within 24 hours. No hidden fees, no commitment.
Free 30-min discovery call. Fixed quote in 24 hours. Weekly demos. 30-day post-launch support.
Also need a custom Shopify theme? Visit our Shopify theme development page.