The All-in-One Shopify Agency for High-Growth US Brands
We are a results-driven team of Shopify experts that helps U.S. businesses of all sizes drive revenue and increase market share.
- Rated on Clutch
- 40+ Shopify Plus merchants and app owners
- Projects start within 3–5 business days
Happy clients
Storefronts, Shopify Plus builds and custom apps for merchants in Germany, Canada, the US and the UK, with the product open so you can judge it yourself.
01>80%of orders through the bundle builderRyzonA custom bundle app on Shopify Plus that works like a fitting room: pick the pieces, see the kit, one add to cart.Custom appShopify Plus
026 weeksfrom first commit to productionPIXLIPA configure-to-order Shopify Plus store for modular LED exhibition systems: one page, one price, real SKUs on the order.Custom appShopify Plus
0330EEA countries, live at checkoutPaypercutA Shopify Payments App for a European payment provider: native at checkout in 30 EEA countries, approved through Shopify’s payments review.Public appPayments
04+61%average order valueemma&noahMix-and-match bundle creator on Shopify Plus. Average order value up 61% after launch.Custom appShopify Plus
05€10,000+MRR in the first monthFerma GorataFarm-to-door meat boxes, moved to Shopify with subscriptions straight from the cart. €10,000+ in monthly recurring revenue in the first month.MigrationSubscriptions
06100%custom theme, built from blankVerziSpaceA brand-new Shopify store for a new American fashion label, designed and built from a blank theme.Store buildFashion
Shopify Services that Deliver Real Results for US Companies
Six things we do for stores selling here, from a custom theme to a migration off WooCommerce or Magento. Every project starts with a written scope and a fixed price.
- 01Store design & developmentA custom Shopify theme your team can edit without a developer.
- 02Migration to ShopifyProducts, customers, orders and rankings moved over intact.
- 03Custom Shopify appsBundle builders, checkout extensions, ERP syncs, private apps.
- 04Public app developmentBuilt for Shopify apps, from idea to App Store listing.
- 05Shopify PlusCheckout extensibility, B2B, Functions and multi-store setups.
- 06Conversion rate optimisationRedesigns and A/B tests on the pages that carry your revenue.
How Strategic Shopify Agency Partnership Transforms USA E-commerce
The American e-commerce landscape is vast and varied. What works in Texas doesn't work in New York, and California demands entirely different strategies than Florida. Most merchants underestimate this complexity until they've already invested months and a significant budget, learning hard lessons.
Partnering with us means skipping those mistakes. We bring cross-market expertise spanning regional preferences, payment behaviors, and logistics challenges nationwide. Your store launches with proven strategies tailored to your target markets, not generic templates.
We build fast, mobile-optimized stores with conversion strategies tested across U.S. markets, checkout flows designed for American payment preferences, and SEO built for competitive search landscapes.
The real value is strategic guidance. We help you identify which markets to prioritize, position against competitors, and invest for maximum ROI. You're gaining a growth partner who understands America's e-commerce ecosystem and knows how to win in it.
Market Position: Shopify's Growth in the USA
Shopify dominates America's e-commerce platform market with 29% market share, powering approximately 3 million U.S. stores, over 60% of its global footprint. The platform generated $292.28 billion in gross merchandise volume in 2024, with revenue growth reaching $8.88 billion.
Shopify's U.S. dominance is particularly strong among high-traffic merchants, capturing 28.8% market share among the top 1 million e-commerce sites. California alone hosts over 160,000 Shopify stores generating $57.7 billion in annual sales.
Growth drivers include an expanding app ecosystem with 16,000+ applications, integrated payment processing nationwide, and accelerating Shopify Plus enterprise adoption among mid-market companies. Black Friday-Cyber Monday 2025 saw record $14.6 billion in sales through Shopify merchants.
With consistent double-digit growth, expanding enterprise penetration, and unmatched U.S. market leadership, Shopify has established itself as the definitive platform choice for American e-commerce ambitions.
The High-Performance Shopify Agency for the US Market
None of these are bad options. They just cost you something we don’t.
Four steps, and you can see every one of them
- 01A 30-minute callWe look through your store before the call and come with questions about what is slowing it down, so the time goes on your store and not on a pitch.
- 02A written scope with a fixed priceWhat we will build, what it costs and when it starts, on one page. Most projects start within 3–5 business days of you saying yes.
- 03Build in the openA shared Slack channel, a staging store you can click through at any point, an update at least every 48 hours and a call every week.
- 04Launch, then stay closeWe launch, watch the first weeks of data and fix what the data says to fix. Most clients keep us on for the next thing.
Founders and managers we worked with, in their own words.
Grumspot's team successfully revamped the SEO ReRank app. The team made sure I'm kept up to date on the progress of the project at all times and were very quick to adapt any requested changes.
Very competent team who do the work diligently and professionally while still maintainting an agile approach to accomodating changing business needs.
We're impressed with their professionalism and quick reaction times to issues and requests.
We loved working with Grumspot! They created a custom app for our Shopify checkout that fixed our address issue perfectly. Their quick and effective solution made a big difference for us. Highly recommend!
Grumspot were exceptionally great to work with. They always offered their best advice and were readily available. I thoroughly enjoyed working with them and highly recommend them.
It has been a pleasure working with Grumspot, and we are extremely satisfied with their services. Their communication was exceptional, and their meticulous attention to detail in data gathering stood out. Grumspot consistently exceeded expectations in their deliverables, completing the project on time and providing unwavering support for any questions our team had. We highly recommend Grumspot for any Shopify Plus projects and look forward to collaborating with them again in the future.
Working with Grumspot was a pleasure. They were highly professional in their communications and the final work product, even under a tight deadline.
Frequently Asked Questions About Shopify Agency in US
Things we have learned running Shopify stores
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Tell us what your US store needs.
Send a few lines about the store and what is slowing it down. We read it, look at the store, and come back with questions and a price range.