Proprietary solutions for complex commerce problems.
We build proprietary Shopify public and custom apps to solve unique business challenges, integrate ERPs, and automate complex workflows.
What this page covers
Avelize builds custom Shopify apps, private integrations, admin tools, and API workflows for merchants that need proprietary logic, ERP or CRM connections, operational automation, or storefront features beyond off-the-shelf apps.
When this matters
Custom app work matters when app subscriptions are creating data gaps, performance problems, manual work, or business rules that cannot be represented cleanly inside the theme.
What Avelize improves
- Private Shopify apps
- ERP, CRM, and inventory integrations
- Admin workflow tools
- API-driven automation
How Avelize works
- Diagnose: We review the current storefront, crawl paths, analytics, customer journey, and business constraints before recommending changes.
- Prioritize: We rank fixes by revenue impact, crawlability, conversion risk, implementation effort, and launch safety.
- Implement: We ship controlled improvements in code, content, UX, schema, internal links, or integrations depending on the page goal.
- Measure: We validate the outcome through Search Console, analytics, QA checks, and follow-up optimization.
Built for Scale
Our custom apps are built using the official Shopify CLI and Polaris design system, ensuring they look and feel exactly like native Shopify features while hiding powerful, custom logic under the hood.
When a custom app beats an app subscription
Most stores should keep using public apps. Building is justified by specific conditions, not by a general preference for owning code.
| Signal | Reading |
|---|---|
| A public app does the job and the fee is not material | Subscribe. Building adds maintenance without adding capability. |
| Two or three apps are chained together with manual steps between them | Build. The manual step is the recurring cost, not the subscriptions. |
| The logic is specific to how your business prices, allocates or fulfils | Build. No vendor will maintain your rules for you. |
| An ERP, WMS or PIM is the system of record | Build. Integration quality determines data accuracy across the whole operation. |
| Public app pricing scales with orders and orders are growing | Model it. Break-even is a calculation, not an instinct. |
What building an app commits you to
An app is a running system with obligations attached, and the ones that catch teams out are the platform’s rather than the code’s.
- API versions are dated and expire. Shopify ships quarterly versions and supports each for a bounded window. An app left alone will eventually call an endpoint that no longer exists.
- Webhooks need to be idempotent. Delivery is at-least-once. A handler that assumes exactly-once will double-write orders under retry.
- Mandatory compliance webhooks are required for customer data requests and redaction, and they have to actually do something.
- Rate limits are real budgets. The Admin GraphQL API is cost-based; a bulk sync written as a loop of single queries will throttle.
- Someone has to be on call. A failed nightly sync is a silent inventory problem until a customer finds it.
We build against these constraints by default: cost-aware GraphQL queries, bulk operations for large reads, idempotency keys on write paths, and alerting on sync failure rather than on error volume.