Shopify development case studies

Shopify case studies: custom themes, product page and cart rebuilds, Shopify apps, Magento migrations and conversion work for brands in the US, UK and beyond.

• Intervel — Custom Shopify theme and product launch waitlist

  A custom Shopify theme for Intervel, a direct-to-consumer pouch brand — tiered discounts and bundles that build bigger carts, subscribe-and-save on every product, and a launch waitlist that turns every buy button into a signup with one setting.

• Slide AI — Shopify app — AI shopping assistant and slide cart

  NINE15's own Shopify app: a slide-out cart, an AI shopping assistant trained on the store, product recommendations and quizzes — all in one panel that never takes the shopper off the page.

• AeroSpray — Replit React app → Shopify Horizon migration

  AeroSpray's site was a hand-coded React app where every copy change needed a developer. I rebuilt it on Shopify Horizon 3.2 with the same look — and now the team edits every page themselves, with their drone catalogue in the same store as the site.

• Silent Wake Up — Horizon redesign for a DTC wearable brand

  A move to Shopify's Horizon theme with a new look for Silent Wake Up, a silent wake-up wearable — product pages, a How It Works page built for A/B testing, and a set of sections the team edits themselves.

• 100 Percent — Shopify Plus product page and cart rebuild

  A smoother way to shop a big Shopify Plus catalogue: colourways that switch in place, add to cart from anywhere, and a custom cart built to sell the next item.

• Masienda — Shopify 1.0 to Horizon retheme

  A full move from an ageing Shopify 1.0 theme to Horizon — every custom feature rebuilt, nothing lost, and a noticeably faster store. Conversion rate rose around 28% afterwards.

• Criquet Shirts — Product page and collection rebuild — A/B tested

  A rebuilt product page and collection grid for Criquet Shirts: colour swatches across a catalogue where every colour is its own product, quick add inside recommendations, and promo tiles the team places themselves. The new product page won its A/B test against the old one.

• Iron Displays — Custom product builder and quoting

  A step-by-step product builder for custom display units: customers pick their options, upload artwork, and the order lands as a ready-to-quote draft — no more email back-and-forth.

• Graduation World — Magento → Shopify migration

  A complete move from Magento to Shopify — every product, variant, collection and image carried across intact, and old Google rankings protected with a redirect for every URL.

• Catalog2Cart — Shopify app — shoppable PDF catalogues

  A Shopify app that turns a printed product catalogue into a shoppable one: tap a product on the page and add it to cart without leaving the catalogue.

• Almsthre — Theme upgrade for a growing catalogue

  A theme upgrade that made a growing catalogue easier to browse and quicker to buy from: better navigation, quick add, colour swatches and a buy button that's always in reach.