Get a Free Quote

Design & Development · Shopify Apps Development

Shopify App Development Services

Private and public Shopify apps, checkout extensibility, and third-party API integrations, built on Shopify's current app framework, independent of your store's theme.

Private and public app builds
Shopify Plus checkout extensibility

Get a free Shopify app quote

Tell us what the app needs to do. We'll reply within one business day.

Please enter a valid email address.
We default to "not sure yet" so a blank field never blocks you.

By submitting, you agree to be contacted about your request. No spam, ever.

Thanks, your request is in. We'll be in touch within one business day.

Why an app, not a theme customization

Logic wired into a theme's code breaks the moment that theme changes.

Store logic edited directly into theme files works, until a redesign or a theme update quietly undoes it. A proper Shopify app keeps functionality separate from design, running through Shopify's supported app framework instead of a fragile theme edit. Shopify Apps Development is built for logic meant to survive whatever theme your store runs next, whether that's a private tool for your own store or a public app listed for other merchants.

Shopify Apps Development, by the numbers

0

Design & Development services in our catalog, including this one

0

App types: private (your store only) and public (App Store listed)

0

Deprecated checkout customization methods used, Plus extensibility only

What's included

Everything a Shopify app build needs, in one service

Private App Development

Custom functionality built for your store alone, no App Store listing or public review required.

Third-Party API Integration

Connecting your store to ERPs, shipping carriers, loyalty platforms, or any external system your workflow depends on.

Checkout Extensibility (Shopify Plus)

Custom checkout logic built through Shopify's current supported extension points, not deprecated legacy methods.

App Store Listing & Submission

Listing copy, screenshots, and app review materials prepared and submitted, for public apps built for other merchants.

Our Shopify app process

Four steps, from requirements to a working app

Scope

We define exactly what the app needs to do, and whether it's a private or public build.

Build

The app is coded on Shopify's current app framework and API, kept separate from any theme's code.

Test

Real-store testing, plus an App Store review readiness check for public app builds.

Deploy

Installed directly for a private app, or submitted to the Shopify App Store for a public one.

Developer reviewing e-commerce app code and analytics on a laptop screen

Why businesses choose Sivaga

Built on current Shopify standards, not deprecated workarounds.

Theme-independent, future-proof logic

Your next theme change won't quietly break functionality that should never have lived in theme code.

Fast turnaround, no ticket queue

Build progress moves on a predictable schedule, not queued behind unrelated tickets.

Honest technical guidance

If your goal doesn't actually need a custom app, we'll say so before proposing one anyway.

Where we work

Shopify app development, run for stores wherever you're based

Shopify app development is remote-capable work, not tied to a physical location, and we already run a dedicated local page for how we deliver it from Salem.

See our work in Salem
Currently serving

Salem, Tamil Nadu, and remote nationwide

Our team is based in Salem, Tamil Nadu, delivering Shopify app development for clients there and remotely across India via video calls.

See our work in Salem →

Shopify app packages

Three starting shapes, scoped to your app

Every quote is custom to complexity and integration needs, but most projects fall into one of these three shapes.

Private App

For a custom app used by your store alone, no public listing.

  • Single-store private app
  • Basic API integration
  • Real-store testing
Get a custom quote
Most Popular

Checkout Extensibility

For Shopify Plus stores needing custom checkout logic or integrations.

  • Everything in Private App
  • Checkout extensibility (Plus)
  • Extended third-party integrations
Get a custom quote

Public App

For an app built for listing on the Shopify App Store.

  • Everything in Checkout Extensibility
  • App Store listing & submission
  • Weekly strategy video check-ins
Get a custom quote

Proof

The kind of Shopify app work we do

A newer, deliberate focus

Standalone app builds are a newer part of our catalog

Shopify Apps Development is a newer catalog SKU, built on the Shopify theme and storefront development skills we already apply across our other Shopify services. A dedicated app case study library is still building out.

Real, related work

See our Custom Shopify Theme work

Our Custom Shopify Theme service already delivers deep Shopify platform and Liquid development work, the same technical foundation app development builds on.

See Custom Shopify Theme →
Our process, working for you

Every app is tested on a real store before we call it done

Real-store testing plus an App Store review readiness check for public builds, catching issues before Shopify's own review ever does.

Industries we serve this for

Shopify app development works especially well for these industries

3 of 8 industries shown
E-commerce & Retail The core use case: custom logic, integrations, and checkout extensions for Shopify stores. Manufacturing B2B ordering apps that connect a Shopify storefront to ERP or inventory systems. Home Services & Contractors Product-based trade businesses selling parts or supplies through a Shopify storefront.
Browse all industries we serve

Client feedback

What clients say about our Shopify app work

Reviews shown are representative examples pending our live Google review sync.

"Our checkout logic survived a full theme redesign without a single change needed. That alone paid for the build."

Deepak N. · Google

Shopify Plus store owner

"They connected our store to our existing ERP cleanly, no duplicate data entry anymore."

Anitha B. · Google

Manufacturing B2B store operator

"Honest advice upfront that we didn't actually need a custom app for our use case, just a configuration change. Saved us money."

Ramya S. · Google

Retail brand founder

"Fast, clear communication through the whole build. We always knew exactly what stage we were at."

Prasanna K. · Google

Home services supply store owner

"Real-store testing caught an edge case with our discount logic before it ever reached customers."

Harini D. · Google

E-commerce store manager

"They understood the difference between what our old checkout scripts did and what Shopify actually supports now."

Siva Kumar R. · Google

Shopify Plus operations lead

FAQ

Questions we hear before starting app development

Custom Shopify Theme is about the storefront's visual design and layout. Shopify Apps Development is about functionality: private or public apps, checkout logic, and API integrations that work independently of whichever theme your store runs.
A private app is built for your store alone and isn't listed anywhere. A public app is built to be listed on the Shopify App Store or distributed to other merchants, which comes with additional review and packaging requirements. We'll help you decide which fits your goal.
Yes. Shopify Plus checkout extensibility lets merchants customize checkout using Shopify's supported extension points, and we build within those, rather than relying on older, now-deprecated checkout customization methods.
We can, for a public app intended for other merchants. We prepare the listing and required app review materials and submit on your behalf, though the review decision and timeline are Shopify's, not something we can guarantee.
Shopify's API and app platform update periodically, so most apps benefit from occasional maintenance to stay compliant and working. We can scope this as a one-time build or an ongoing arrangement, depending on your app's complexity and how central it is to your store's operation.

Tell us about your app project

The more detail you give us, the more useful your first call will be.

Please enter a valid email address.

We reply within one business day, every time.

Thanks, we've received your details and will be in touch within one business day.

"Our checkout logic survived a full theme redesign without a single change needed. That alone paid for the build."

Deepak N. · Google

Logic buried in a theme is one redesign away from disappearing

A proper app is the difference between rebuilding functionality every theme cycle and never touching it again.

Call our team →

Ready for an app that outlasts your theme?

One conversation is all it takes to get your app scoped and quoted.

Get my free quote

We use privacy-friendly analytics cookies to improve your experience on our site.