Shopify apps and theme development that grow your store.
Northstack builds high-performing Shopify apps and delivers fast, reliable theme edits and custom template development.
Featured App
Tools built by merchants, for merchants.
On Sale Discount Blocker
Stop discount stacking on sale items and protect your margins
- Block discounts on sale items automatically
- Works with code and automatic discounts
- No setup or complex rules required
Services
Expert Shopify development, on demand.
Theme Editing
Pixel-perfect changes, fast. Small tasks and quick fixes handled with care and precision.
- Layout adjustments
- CSS & styling fixes
- Section customization
- Bug fixes & QA
Custom Template Development
Custom sections, blocks, and full templates built in Liquid with performance and CRO in mind.
- Custom sections & blocks
- Liquid development
- Performance optimization
- CRO improvements
Why Northstack?
Shopify Expertise
Deep knowledge of Liquid, themes, checkout, and the app ecosystem.
Fast Turnaround
Most theme edits delivered in 24–48 hours. Apps ship on tight timelines.
Clean Code
Maintainable, well-documented code that future developers will thank you for.
Performance-Minded
Every line of code is optimized for speed. Your store stays fast.
Clear Communication
You'll always know what's happening, what's next, and when it's done.
From the Blog
Tips, guides, and insights for Shopify merchants.
Tell us what you're building.
Whether it's a new app idea, a theme tweak, or a full custom build — we're here to help.
Contact Northstack