Shopify Development Agency
HelloDevs helps brands grow on Shopify with apps, themes and custom builds that stay maintainable long after launch. We focus on clean architecture, scalable solutions, and long-term partnerships that drive real results.
Our story
We blend creativity, code, and cutting-edge tech to turn your ideas into powerful products.
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Our work
Anyone can describe a process. HelloDevs would rather hand you working software - one app live today, four more close behind, all built and maintained by the same team that would work on your project.
Our scope
We build high-performance digital products that help businesses launch faster, scale confidently, and stay ahead of the competition. From Shopify development and AI integrations to custom web applications and SaaS platforms, every solution is engineered for long-term growth, reliability, and exceptional user experience.
Our proof
Screenshots are easy. Numbers are harder, so here is what we built, what broke, and what changed afterwards.
AiSalesQ
A quiz that recommends the right product — and then proves it worked. When an order is paid, one webhook attributes it back to the answer that earned it, closes the abandoned cart, marks the discount redeemed and stops the follow-up sequence, so nobody is chased to buy what they just bought.
Shopfly
Popups, smart bars and social proof feeding one segmented subscriber list, with campaigns and automations sent from the same place. Klaviyo and Mailchimp stay in sync rather than competing, and scheduled sends are locked so a campaign can never go out twice.
Hello Studio
Buy a section once and we write the Liquid straight into your theme. From then it behaves like any other section — configured in the theme editor, no third-party runtime on the page, and still working if you uninstall us.
ShopFlex
One widget builder for the whole storefront — social icons, chat, WhatsApp, sticky bars. The configuration ships inside the page through a shop metafield, so widgets are there on first paint instead of a network request later. Two read-only permissions, no customer data. Live on the Shopify App Store.
You'll get
What you get with every HelloDevs quote
Every HelloDevs quote covers all of this. If an agency leaves any of it out, the cost reappears later as a change request.
- Scoping documentWhat gets built, what does not, agreed before any code is written. We define scope, timeline, and deliverables together so there are no surprises mid-project.
- The app itselfEmbedded in Shopify admin, built to Shopify's current standards and best practices. Performance-optimized, fully responsive, and designed to feel native to the merchant experience.
- Billing setupShopify Billing API wired up with plans and trials configured from day one. Recurring charges, usage billing, and free trial flows are all handled and tested before launch.
- App Store submissionWe handle the review process, the rejections, and every resubmission. You stay focused on your business while we navigate Shopify's requirements until you're approved.
- Listing assetsScreenshots, description, and keywords written for App Store search visibility. We craft listing copy that communicates your value proposition and helps merchants find you.
- DocumentationSo you are not dependent on us to understand your own product. Clear, structured docs covering setup, configuration, and troubleshooting for your team and future developers.
- Source codeYours, in your repository, from day one — no lock-in, no gatekeeping. Full Git history, clean architecture, and code you can confidently hand off to any developer.
- 30 days of post-launch fixesIncluded in every project, not billed as an extra. Any bugs, edge cases, or issues that surface after launch are fixed promptly at no additional cost.
Our trust
"HelloDevs delivered exactly what we needed—fast, polished, and without unnecessary complexity. From the first design review to launch, communication was clear and every milestone was met on time."
Sarah Mitchell
Founder, BrightFlow
"The team transformed our idea into a production-ready SaaS platform with impressive speed. The interface feels premium, performance is excellent, and our customers noticed the improvement immediately."
Emily Rodriguez
Marketing Director, ScalePilot
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Our guide
- A Shopify development agency builds and maintains the parts of a store Shopify does not give you out of the box. That means custom themes, apps, integrations with your other systems, and ongoing fixes. HelloDevs does all of this and also publishes its own Shopify apps.
- Yes. We work with merchants across North America, Europe, and Asia. Our process is async-first with scheduled overlap hours, so time zones have never been a blocker for a project.
- It depends on scope. Theme customisations typically start in the low four figures; custom apps and full builds range higher. After a free audit we give you a fixed quote — no hourly surprises.
- Absolutely. Private (custom) apps are a large part of our work — from small workflow automations to full ERP integrations that only your store uses.
- Every project ships with a support window, and most clients stay on a maintenance retainer: monitoring, Shopify update compatibility, and a direct line to the same developers who built it.
- Continuity and coverage. An agency gives you review processes, backup when someone is unavailable, and accumulated platform experience across many stores — with one point of accountability.
Didn't Got your answer?
If you still have questions or need further assistance, feel free to reach out to our team. We're here to help you every step of the way.
Our talk
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