How much does it cost to build an e-commerce app in 2026?

A catalog-browse-and-checkout MVP costs $40,000–80,000. Mid-tier apps adding accounts, loyalty programmes, push notifications, and order tracking run $80,000–200,000. Full-featured platforms with real-time inventory sync, AR try-on, personalised recommendations, and multi-warehouse fulfilment reach $200,000–600,000+. Ongoing maintenance typically adds 15–20% of build cost per year.

Should I build a native app or use a Shopify mobile SDK?

Shopify's Storefront API and Hydrogen framework suit merchants whose catalogue already lives in Shopify and who want fast time-to-market. Build a fully native app (Swift/Kotlin) or cross-platform (React Native/Flutter) when you need deep custom UX, offline browsing, AR try-on, or tighter integration with proprietary ERP/WMS systems that Shopify connectors cannot cover.

What payment gateways do e-commerce app agencies typically integrate?

Stripe and Braintree dominate US/EU projects. Apple Pay and Google Pay are now table-stakes for conversion. Klarna, Afterpay, and Affirm (BNPL) are increasingly standard. For physical goods sold through App Store or Play Store, the platform's IAP mandate does not apply—agencies should be clear on this distinction before quoting.

How do agencies handle Black Friday and Cyber Monday traffic spikes?

Experienced e-commerce agencies architect for elastic scaling from day one: auto-scaling groups on AWS/GCP, CDN-cached product assets, read-replicas for catalogue queries, and queue-based order processing so checkout never blocks on inventory writes. Ask prospective agencies for load-test reports from previous retail clients during peak periods.

What is headless commerce and when do I need it?

Headless separates the commerce back-end (Shopify Plus, Commercetools, Elastic Path) from the front-end presentation layer. You need it when your mobile app, web storefront, kiosk, and voice channel must all share a single product/inventory truth but present very differently. The trade-off is higher initial build cost (typically 40–60% more) in exchange for long-term flexibility.

How important is cart and checkout UX to conversion rates?

Industry data consistently shows 65–70% of mobile shopping carts are abandoned. Single-page checkout, biometric autofill (Face ID / Touch ID for saved cards), progress indicators, and guest-checkout options each reduce abandonment by 5–15%. Agencies specialising in e-commerce should present A/B test evidence from past projects, not just design mockups.

Can an e-commerce app include AR try-on features?

Yes. Apple's ARKit (via RealityKit) and Google's ARCore support 3D product placement and virtual try-on for apparel, eyewear, and furniture. Reliable AR requires high-quality 3D assets (USDZ for iOS, glTF for Android) produced separately from development. Budget $500–5,000 per SKU for asset creation plus $20,000–60,000 for the AR integration itself.

How does abandoned-cart recovery work in a mobile app?

Push notifications are the primary channel—sent via APNs (iOS) and FCM (Android) through a CRM or marketing automation layer (Klaviyo, Braze, Iterable). Effective recovery sequences send a first nudge 1 hour after abandonment, a second with a discount at 24 hours, and a third at 72 hours. Agencies should wire push permission prompts into the onboarding flow to maximise opt-in rates.

E-commerce · Retail & marketplace specialists · Updated September 2026

E-commerce app development agencies, compared

74 agencies that ship shopping, marketplace, and retail apps. Average rate $80–$125/hr, typical minimum project $31K.

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Why Do E-commerce Brands Need a Dedicated Mobile App?

Mobile commerce accounted for 60% of global e-commerce sales in 2024, yet conversion rates on native apps run 3–4× higher than on mobile web. The gap comes from persistent login, saved payment methods, biometric checkout, and push notifications—capabilities that browsers still cannot match. For any brand generating more than $2M/year online, a native or cross-platform app is no longer a nice-to-have.

E-commerce apps sit at the intersection of commerce logic, real-time inventory, payment security, and high-stakes UX. A missed edge case in checkout can cost thousands in abandoned orders; a botched payment-gateway integration can expose card data. Agencies that specialise in retail understand PCI-DSS tokenisation, idempotent order APIs, and the physical-goods exemption from App Store IAP rules—details that general-purpose dev shops frequently miss.

The right agency will also plan for traffic asymmetry from day one. Black Friday and Cyber Monday can deliver 10–20× normal load in a matter of hours. Architectures that work fine at steady-state collapse without auto-scaling, CDN caching, and queue-based order processing. Agencies with real retail client references will have load-test reports to show you; those without experience often discover these problems in production.

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E-commerce development agencies (74)

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Acid Labs

Santiago, Chile

Santiago, Chile digital transformation agency founded in 2006. 600+ professionals deliver web and mobile development, e-commerce, AI, and cloud solutions for major Latin American enterprises including Falabella, Latam Airlines, Walmart, and Itaú.

iOSAndroidWeb AWSGoogle Cloud

Hourly rate: $50–99
Min project: $50K
Team size: 250+
IP ownership: Standard

E-commerce app development agencies, compared

Why Do E-commerce Brands Need a Dedicated Mobile App?

E-commerce development agencies (74)

What Does an E-commerce App Cost to Build?

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How Do You Choose Between Shopify, Headless Commerce, and Custom Build?

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