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OneClickUpsell (Zipify OCU) is the flagship of a product suite that powers more than 18,000 Shopify brands, including Dr. Squatch, TUSHY, Buffy, and Victoria Beckham. Master of Code Global has built and grown it since 2016.
A store that sells only what the customer came for is leaving revenue behind. A bike shop sells the bike, but it could also sell the bell, the lights, and the lock.
Shoppers now expect offers at every stage of the purchase, and some deliberately wait for them. A store without upsells doesn’t meet that expectation.
OCU exists to close this gap. It raises average order value at any stage, from the first visit to after checkout, with small, targeted offers.
Why it’s hard
Upselling inside Shopify means playing by Shopify’s rules. The platform requires certifications and runs every app through automated technical checks and manual UI reviews. It also changes direction often, most recently toward agentic commerce, and apps have to follow wherever Shopify invests.
Staying relevant is a second challenge. OCU is a large, established app, and merchants are starting to consider AI agents as replacements for traditional tools. The team responded with an in-app rebrand and redesign.
The third challenge is packaging value. The team ships more features than ever, and every one has to be presented without overwhelming the merchant.
Valerii Stadnyk
Director of Engineering
The product's journey began with a single store's request to customize their checkout process. This task proved challenging, as we were pioneering a solution that didn't previously exist on the platform and faced unexpected obstacles. Yet, the team's determination yielded results that inspired us to create an app accessible to any store. Six months later, on 03/23/2016, we released the first version of the product, which quickly gained recognition. Its success is a testament to the team's dedication, their creative approach to product design, and their willingness to tackle complex, innovative challenges.
OCU started with a single store’s request to customize its checkout. No solution for this existed on Shopify, so the team had to build one from scratch.
“This task proved challenging, as we were pioneering a solution that didn’t previously exist on the platform and faced unexpected obstacles. Yet, the team’s determination yielded results that inspired us to create an app accessible to any store.”
— Valerii Stadnyk, Director of Engineering
Six months later, in March 2016, OCU launched as the first Shopify app to offer one-click post-purchase upsells. Customers could add products without disrupting their buying flow.
That willingness to take on hard requests has stayed. When other vendors turned down a brand’s custom development request, Master of Code agreed.
OCU grew from one post-purchase offer into a full upsell platform. It added pre-purchase offers, which quickly became the second most popular option, and in 2020 it launched on the Shopify App Store as a standalone app built in collaboration with Shopify. It went on to add advanced display triggers, integrations with apps like Klaviyo, Recharge, and Zipify Pages, and an exclusive upsell offer on Shopify’s Shop App, where OCU remains the sole provider.
Today, OCU covers every offer placement in a single app: product page, pre-purchase, slide cart, checkout, post-purchase, and thank-you page. In 2024, the team added a proprietary generative AI model, built from scratch, that personalizes offers based on cart contents, split-tests up to four products at once, and writes product descriptions.
Every upsell app can report what happened last month. Fewer can say what to do next, and fewer still can just do it.
In 2025, we launched AI Assist. Instead of announcing features, it leads with the gap: it shows each merchant the specific revenue they’re leaving on the table and how to earn 5–10% more.
In 2026, AI Assist went agentic. It now builds and publishes upsell funnels directly from the conversation, with no trip to the standard builder.
The team built AI Assist in about 2.5 months as an isolated, standalone module with its own database and infrastructure. That let them move fast without risking the core app that thousands of merchants depend on daily.
Next, AI Assist will flag issues proactively across the whole app. A Claude integration via MCP will let merchants check performance and get recommendations without opening OCU at all.
The AI transformation reached the team as well as the product. Product owners now write PRDs instead of user stories and build prototypes in Claude using custom skills. Designers work with agents in Figma and Claude Design. Developers work full-stack, so one person often covers a whole task.
The team replaced sprints with a prioritized backlog and strong ownership. Requests can go straight from a support manager to a developer. Over the last two months, development speed has jumped so much that even less-requested features now get built.
Merchants consistently praise three things: fast payback, hands-on support, and feature requests that actually get built.
Fresh Chile switched to OCU from another upsell app and pushed over $238,000 through it in six months. Its average order value is $53 with upsells versus $45 without.
“That pays for the app and then some, every single day.”
— Fresh Chile, Shopify App Store review
Cheech & Chong’s Global credits the OCU team with setting up split tests and adding custom cart features for them. The team’s help went
“not just on technical setup but actually spending time in our store”
— Cheech & Chong’s Global, Shopify App Store review
More Hair Naturally, a merchant for almost five years, says support is fast, gives specific answers, and will simply fix an issue when needed.
• Shopify Platform: Theme extensions, Checkout UI extensions, Shopify Functions, Post-purchase extensions, REST, GraphQL, Bulk APIs
• DevOps: AWS, RDS, ElastiCache, CloudFront, S3, Docker, EKS
• Frontend: TypeScript, JavaScript, Vue.js, React Native, Webpack, esbuild, Gulp.js
• Backend: Ruby, Rails, Sinatra, Grape, Node.js, Python
Master of Code Global builds products that succeed inside strict platforms. We know how to pass certifications and reviews, and how to keep pace as the platform shifts direction.
We extend large, established products without putting them at risk. AI Assist shows the approach: a new AI capability shipped in about 2.5 months as an isolated module, while the core app kept serving thousands of merchants daily.
Our own team runs on AI-native processes, so we move from request to shipped feature faster than traditional sprint-based teams.
