INTERNAL TOOLS & ECOMMERCE AUTOMATION
Custom Shopify Plus Internal Tools, Ecommerce Automation & App Development
Most Shopify Plus stores eventually need more than a theme and a collection of apps. When the store becomes harder to manage or starts getting in the way of how you want to operate, we build the custom features and integrations to fix it. From custom functionality to internal tools and ecommerce automation, we build around how your business actually works rather than forcing it into another app.
We build custom Shopify functionality alongside the team that built your store, so new features and automations work with the rest of your site instead of becoming another system to manage.
200+
Brands We Have Worked With
Custom tools, automations and integrations built for DTC ecommerce brands on Shopify Plus, from startups to $10M+ operations.
€75/hr
Development Rate
All-inclusive hourly rate for custom development, no retainers, no hidden fees. Fixed-price scoping available after a free discovery session.
Fewer apps
Less Monthly Software
Shopify Plus stores collect apps over time, each with its own subscription and its own scripts on the page. We replace the ones that overlap with purpose-built tools that do only what your operation needs.
Owned
Not Rented Monthly
A custom tool is built once and belongs to you, instead of a subscription that grows with your order volume. What that saves depends on the app stack it replaces, which is why we look at yours before scoping.
(01) OVERVIEW
When does a Shopify Plus store need custom internal tools?
You need custom Shopify Plus internal tools when your ecommerce operations have outgrown the limitations of standard apps. If your team spends 10+ hours a week on manual order processing, your 3PL inventory doesn't sync reliably, your CRM doesn't talk to Shopify, or your reporting requires exporting CSVs from 5 different platforms, you are losing revenue to operational friction.
We don't just build tools. We build custom Shopify functionality that makes the store easier to run and easier to buy from. That can mean product recommendations that help increase AOV, inventory automation that keeps product availability accurate, or reporting tools that give your team the data they need to make better CRO decisions. The goal is simple: improve how the store performs without making it harder to manage.
Most DTC brands hit the custom tools tipping point between $500K and $2M in annual revenue, when app costs exceed $2,000/month and manual processes start costing more than automation.
(02) ROI CALCULATOR
CRO revenue estimator.
Model what a conversion rate lift is worth on your current traffic before you talk to us.
Inputs
Result
+€1.1M
Additional revenue per year
(03) FEATURES
What we make: Shopify Plus internal tools and ecommerce automation
Fulfilment automation and order routing
Custom automated workflows that route orders to the right warehouse, 3PL or fulfilment center based on product type, location, inventory levels or custom rules.
- //Replaces manual order processing with intelligent automation
- //Integrates with ShipStation, ShipBob, Flexport and custom 3PLs
- //Reduces fulfilment errors by 90%+, hours down to seconds
CRM integrations for Shopify Plus
Bidirectional sync between Shopify Plus and your CRM, HubSpot, Salesforce, Pipedrive or custom systems.
- //Customer data, order history, LTV and behaviour flow both ways
- //Automated lead scoring based on ecommerce activity
- //Post-purchase workflows triggered by Shopify order events
Inventory sync and multi-location management
Real-time inventory sync across your Shopify Plus store, warehouses, 3PLs and marketplace channels such as Amazon and eBay.
- //Prevents overselling and automates reorder alerts
- //Ends spreadsheet-based inventory management
- //Custom sync intervals from real-time to hourly
Custom reporting dashboards
Purpose-built reporting that combines Shopify, Meta Ads, TikTok Ads, Klaviyo, Google Analytics and warehouse data into a single dashboard.
- //Revenue, conversion rate, ROAS, inventory and LTV in one place
- //Updated in real time, no more CSV exports from 5 platforms
- //Built on modern BI tools or custom interfaces
Custom Shopify app development
When no off-the-shelf Shopify app fits your business logic, we build custom apps from scratch. Starting at €8,000.
- //Bundling engines, B2B wholesale pricing, multi-location rules
- //Automated order tagging and post-purchase upsell flows
- //No monthly app fees, no feature bloat, full code ownership
Klaviyo advanced flows and email automation
Advanced automation flows triggered by Shopify Plus events, custom properties and behavioural data.
- //RFM segmentation and predictive send timing
- //Dynamic product recommendations and replenishment flows
- //Win-back sequences tuned by customer lifetime value
(04) PROCESS
How we build custom Shopify Plus internal tools
01
Operations audit and opportunity mapping
We audit your current Shopify Plus operations: app stack, manual processes, data flows, integrations and pain points. We map every automation opportunity and estimate the ROI of each, factoring in app cost savings, time savings, reduced errors and conversion impact. This produces a prioritised roadmap ranked by revenue impact.
02
Solution architecture and scoping
We design the technical architecture: APIs, data flows, integration points and user interfaces. You get a detailed scope document with timeline, cost breakdown and expected outcomes before any development starts. We use Shopify Plus APIs, Shopify Flow, webhooks and custom middleware depending on complexity.
03
Development and integration
We build, test and integrate your custom tools with your existing Shopify Plus store and tech stack. Development follows an iterative process, so you see working features every 1–2 weeks rather than only at the end. Every integration is load-tested against your transaction volume.
04
Launch, monitoring and iteration
Tools go live with monitoring dashboards that track performance, errors and ROI metrics. We provide 2 weeks of post-launch support to catch edge cases. Ongoing maintenance and iteration is available from €500/month as part of our Shopify maintenance plans.
(05) PRICING
Shopify Plus internal tools and automation pricing
Pricing depends on complexity, number of integrations and data volume. All development is billed at €75/hour or scoped as a fixed-price project after a free discovery session.
| ENGAGEMENT | INVESTMENT | TIMELINE | PAYBACK |
|---|---|---|---|
| Simple automation workflow (order tagging, routing) | €2,000–€5,000 | 1–2 weeks | 1–2 months |
| CRM integration (HubSpot / Salesforce ↔ Shopify) | €3,000–€8,000 | 2–4 weeks | 2–3 months |
| Inventory sync (multi-warehouse / 3PL) | €5,000–€15,000 | 3–6 weeks | 2–4 months |
| Custom reporting dashboard | €4,000–€12,000 | 2–5 weeks | Immediate decision speed |
| Custom Shopify app | €8,000–€25,000+ | 4–8 weeks | 3–6 months |
| Klaviyo advanced flow automation | €2,000–€6,000 | 1–3 weeks | 1–3 months |
Most DTC brands start with one high-impact automation, typically fulfilment routing or a CRM integration, and expand their custom tool stack as they grow.
(06) TESTIMONIALS
What Shopify Plus brands say about our internal tools and automation
Trusted by 200+ DTC and ecommerce brands, across 30 European markets.
““In my work with Conversion Design, I learned a lot about various dashboards, internal tools, and the importance of experimentation. Each session blended theory and hands-on learning, allowing me to test and implement strategies, then refine my approach after each review. Conversion Design’s feedback was effective, clear, detailed, and prompt.””
““Conversion Design rebuilt our Shopify Plus store from scratch, custom theme design, checkout flow optimisation, and ERP integration all handled in-house. What impressed us most was how tightly design and development worked together. The store launched on time, comfortably clears 90 on mobile PageSpeed, and our checkout completion rate improved measurably in the first month.””
(07) COMPARISON
Custom Shopify Plus tools vs off-the-shelf apps vs in-house development
| FACTOR | OFF-THE-SHELF APPS | CONVERSION DESIGN | IN-HOUSE DEVELOPER |
|---|---|---|---|
| Monthly cost | A subscription per app, every month | €0/mo after build, you own the code | A full-time developer salary |
| Fit to your business | Generic, you adapt to the app | Purpose-built for your exact workflows | Purpose-built if you can hire |
| App bloat and conflicts | Common, apps conflict and slow your store | Zero bloat, only what you need | Depends on developer quality |
| PageSpeed impact | Negative, each app adds JS and CSS weight | Minimal, clean optimised code | Depends on developer quality |
| Conversion rate impact | Often negative, slow store means lost sales | Positive, built as part of the CRO process | Neutral, not CRO-focused |
| Cross-brand ecommerce insights | None | More than 200 Shopify Plus brands | Single brand |
| Maintenance and updates | App developer controls updates | You control, we maintain from €500/mo | You maintain |
| Best for | Early-stage brands under $500K/year | DTC brands at $500K–$10M+ outgrowing apps | Brands at $2M+ with a full-time dev budget |
The trade is up front cost against what comes after. An app is cheap to switch on and keeps charging every month; a custom tool costs more to build and then belongs to you, doing what your operation needs rather than what the app was designed for.
(08) START
Ready to replace your app stack with custom Shopify Plus tools?
Send us your store and we will review your current Shopify Plus app stack, identify the highest-ROI automation opportunities and scope a custom tool project, in writing and within two working days. No commitment required.
(09) FAQ
Frequently asked questions and answers.
Frequently asked questions about Shopify Plus internal tools and ecommerce automation
What internal tools and automation do you build for Shopify Plus?
We build fulfilment automation workflows, CRM integrations (HubSpot, Salesforce, Pipedrive, custom), inventory sync across warehouses and 3PLs, automated order routing and tagging, custom reporting dashboards combining Shopify, Meta Ads, Klaviyo and GA4 data, product recommendation engines, loyalty and referral integrations, Klaviyo advanced flow automation, and custom Shopify apps for unique business logic. We build for DTC ecommerce brands doing $500K–$10M+ in annual revenue that have outgrown off-the-shelf Shopify apps.
How much do custom Shopify Plus internal tools cost?
Custom internal tools and ecommerce automation start at €2,000 to €5,000 for a simple workflow such as order tagging or routing. A CRM integration runs €3,000 to €8,000, multi-warehouse inventory sync €5,000 to €15,000, a custom reporting dashboard €4,000 to €12,000, and a full custom Shopify app €8,000 to €25,000 and up.
When should a Shopify Plus brand invest in custom internal tools?
You need custom internal tools when your Shopify apps stop fitting the way you actually work: when someone is copying data between systems by hand, when an app does eighty per cent of what you need and you have built a process around the missing twenty, or when the app stack has grown enough to slow the store down. Most brands start with one high-impact automation and expand from there.
Can you integrate my existing CRM with Shopify Plus?
Yes. We build custom CRM integrations for Shopify Plus with HubSpot, Salesforce, Pipedrive and custom systems, from €3,000 to €8,000 and typically two to four weeks. Data syncs both ways, and workflows are triggered by Shopify order events rather than run on a nightly batch.
Do you build custom Shopify apps?
Yes. When off-the-shelf Shopify apps do not fit your business logic, we build one that does, from €8,000 and typically four to eight weeks. That is usually the right call when you are paying for several apps to approximate one process, or when the process is specific enough that no app models it properly.
How do internal tools connect to conversion optimization?
Internal tools directly impact your Shopify store in two ways. Every app you remove is a script that no longer loads ahead of the buy button, which shows up in PageSpeed and in mobile conversion. And accurate data in one place is what makes CRO decisions possible: you cannot test against revenue if the numbers live in four systems that disagree.
(10) RELATED SERVICES
Services that pair with custom internal tools
Shopify Plus Store Design & Development
Conversion-designed Shopify stores, built for speed and measured before and after. Projects from €5,600.
Learn more →Ecommerce CRO
Our 4-step CRO process built into every Shopify store: product page design, checkout optimization and A/B testing.
Learn more →White label Shopify development
Custom Shopify and tooling work delivered under an agency's name.
Learn more →