Mobile app development for iOS and Android.

An app is a bigger commitment than a responsive site, and the honest first question is whether you need one at all. If your customers buy once a year, a well-built mobile web experience will serve them better than an install prompt they decline. If they buy monthly, the app is where the relationship lives.

When a mobile app earns its place

• Repeat purchase. Groceries, beauty refills, consumables, subscriptions. Anything with a reorder rhythm, where saved carts, saved payment and one-tap reordering remove real friction.
• Push as a channel you own. Not as a broadcast tool — as back-in-stock, order status, delivery windows and price drops on items someone actually watched.
• Field and operational users. Drivers, pickers, merchandisers, technicians. People working away from a desk, often on a poor connection, where a browser tab is genuinely the wrong tool.
• Loyalty that has to be present. A card in a wallet, a scannable code at a till, an account that opens without a login every time.

If none of those apply, we will say so. An app nobody opens is a maintenance obligation with two app store review queues attached.

Cross-platform, and why

We build in Flutter and React Native, which means one codebase produces both an iOS and an Android application. The practical effect is that a feature ships to both platforms together rather than twice, and a bug is fixed once. For commerce apps — where the hard problems are catalogue, pricing, checkout and sync rather than platform-specific rendering — that trade is almost always right.

Cross-platform versus fully native

Approach	Choose it when	What you trade
Flutter or React Native	Commerce, content, accounts, ordering — most business apps	A thin platform layer for anything deeply native
Fully native (Swift / Kotlin)	Heavy device integration, AR, sustained background processing, demanding graphics	Two codebases, two release cycles, roughly twice the ongoing cost

We write Swift and Kotlin too, and we use them where a genuine platform capability calls for it — including inside a cross-platform app, which is a normal and unremarkable thing to do.

Wired to one source of truth

The failure mode that ruins commerce apps is divergence: the app says one price, the website says another, and support gets both. So the app reads the same catalogue, pricing, promotions, inventory and order data as your store, through the platform's own APIs — Shopify's Storefront API, or whatever your custom platform exposes.

Carts survive a lost connection and reconcile when it comes back, because mobile networks are not desk networks. Where offline behaviour genuinely matters — a picking or delivery app, say — we design for it explicitly rather than hoping.

What we build into every app

Authentication including social and biometric sign-in. Native payment sheets, Apple Pay and Google Pay, so checkout is a thumbprint rather than a form. Push notifications with segmentation and deep links that open the right screen rather than the home tab. Analytics wired to the same events as the web store, so the two are comparable. Accessibility — dynamic type, screen reader labels, sufficient contrast — because both stores review for it and because it is right.

Release and the app stores

The part most quotes underestimate. We handle store listings, review submissions, privacy nutrition labels and data-safety declarations, staged rollouts, crash reporting and over-the-air updates where the platform permits them. Review rejections happen to everyone; the difference is whether the team has seen that rejection before and knows the fix.

Apps also decay in a way websites do not: operating system releases, SDK deprecations and store policy changes arrive on someone else's schedule. That maintenance is real and we scope it openly rather than leaving it to be discovered.

What to measure once it is live

Downloads are the metric app projects get judged on and the least useful one available. An install is a cost you have already paid for; what matters is what happens afterwards.

• Repeat purchase rate in the app against the web. The whole thesis of a commerce app is that it makes buying again easier. If that gap does not appear within a couple of months, something in the reorder flow is wrong.
• Retention at day 30 and day 90. Day-one retention flatters everything. Day 30 tells you whether the app earned its place on the home screen.
• Push opt-in rate, and revenue per notification. Opt-in is earned by asking at the right moment for a reason the customer recognises, not on first launch.
• Crash-free session rate. Below about 99.5% you are losing orders you will never see in the funnel, because the session simply ended.

We wire these up as part of the build rather than afterwards, using the same event names as the web store so the two are genuinely comparable.

Who this is for

Retail and grocery brands with a repeat-purchase rhythm. Marketplaces that need a rider, vendor or driver application alongside the customer one — the Fastmart platform is exactly this shape. B2B distributors whose buyers reorder from a warehouse floor. Service businesses whose customers book, track or manage something.

What it costs, and how long it takes

It depends on how much the app does and how much of the backend already exists. An app over a well-documented Shopify store is a different project from one that needs new APIs, new roles and an offline mode designed from scratch — and the second is where most of the effort actually sits.

Tell us what your customers would do in the app and how often. That conversation is free, and it is the one that decides whether the app is worth building at all. Talk to our mobile team.