Custom mobile apps

Custom mobile app development for iOS and Android

You need a custom mobile app that can pass App Store and Google Play review, survive the next OS release, and get used more than once. CodeLoop Studio designs and builds native and cross-platform apps for startups and companies that want a product team, not a pile of screenshots. Stack choice comes after we see the product — this page is how we engage, staff, and ship.

Get an estimate LipoDIETA

Hands holding a phone while reviewing a custom mobile app — Photo by Tracy Le Blanc on Pexels

An app people install more than once

A custom mobile app is the product your users keep: accounts, notifications, offline edges, payments if you take them, and a backend that does not collapse on launch week. Custom mobile app development at CodeLoop Studio covers iOS and Android as one delivery — Swift and Kotlin when the OS experience must be perfect, Flutter or React Native when one squad should hit both stores without doubling cost.

Store listing, privacy labels, signing, and review cycles sit in the plan, not as a surprise invoice. Typical clients are in the US, UK, and EU. We work in English from Sarajevo, with Eastern Time morning overlap when the buyer is American. You keep product ownership. We own design-to-store quality and the awkward bits: certificates, review rejections, OS updates.

You do not need a 40-page spec. You do need a decision-maker on the calls. A marketing homepage is website development. New York product teams who want the same model with ET mornings start at mobile app development for New York. A scoped estimate lands within 24 hours via the online estimate.

Stores, devices, and a decision-maker — not a screenshot vendor

A custom mobile app is accounts, notifications, offline edges, payments if you take them, and a backend that does not collapse on launch week. We cover iOS and Android as one delivery. Native when deep device APIs and platform-perfect chrome are the product. Flutter or React Native when one squad must hit both stores without doubling cost. Stack choice comes after we see the features — not because we only have one hammer. Store listing, privacy labels, signing, and review cycles sit in the plan, not as a surprise invoice.

This work fits founders with a pitch and a budget, and product teams abroad who need a build partner rather than another contractor spreadsheet. Typical clients are in the US, UK, and EU. We work in English from Sarajevo, with Eastern Time morning overlap when the buyer is American. You keep product ownership. We own design-to-store quality, real-device QA, and the awkward bits: certificates, review rejections, OS updates. You do not need a 40-page spec. You do need someone on the calls who can freeze scope.

LipoDIETA is a health and nutrition product we shipped as a mobile app with the website and dashboard around it — recovery workflows, not a demo reel. That is the bar: something patients and staff can open next week, with store delivery included. Typical custom apps take three to nine months from idea to launch; a thin first version can ship faster when scope is honest. After release we can stay for OS updates and the next version. A marketing homepage is a different brief. New York overlap has its own page.

What you are buying from a studio, not a screenshot vendor

Both stores, one plan

iOS and Android as one delivery. Native when the OS is the product; Flutter or React Native when shared UI is honest.

Real-device QA

Phones, not only simulators. Launch-week bugs are cheaper in staging than in a one-star review.

Backend that survives week one

APIs, admin, notifications, payments. An empty shell that demos well is not an app.

Review is a phase

Privacy nutrition labels, signing, screenshots. We plan them. We do not treat App Store review as a Friday.

Named owner, weekly demos

Written status you can forward. A three-month silence until a big-bang upload is how apps miss the date.

Stay after launch

OS updates and a backlog. We do not hand you a repo and vanish.

From pitch to both stores

01
Discovery that freezes an MVP
What must ship, who uses it, which stores. Stack after features — not because we only have one hammer.
02
Design for the slice
Screens for the loop a user can finish. Not a redesign of email, onboarding, and six roles in v0.
03
Vertical slices you can tap
Build in pieces that work on a device. Typical custom apps take 3–9 months from idea to launch; a thin first version can be faster when scope is honest.
04
QA on phones
Accounts, notifications, offline edges, payments if you take them. Simulators lie about thumbs and radios.
05
Store submission
Listings, privacy copy, signing, review notes. Then the next version if the slice works.

Case study

LipoDIETA

A health and nutrition product shipped as a mobile app with the website and dashboard around it — recovery workflows, not a demo reel. Patients and staff can open it next week. Store delivery included.

Open case →

What we need before we quote a date

The loop a user finishes
One job, measurable. “Platform for wellness” is not a loop.
Who is on the calls
A decision-maker. We cannot freeze scope with a committee that never replies.
Store orgs you control
Apple and Google stay yours. We work inside them. Send the brief through the estimate form.

Frequently asked

Yes. We start with a short discovery to freeze an MVP, then design and build. You do not need a 40-page spec.

Yes. We overlap mornings Eastern Time for stand-ups and keep written updates async so you are not waiting overnight for every answer.

Most of our custom mobile apps take three to nine months from idea to launch. A focused MVP can be faster; a multi-role product with payments and hardware takes longer. We give a timeline after discovery, not a marketing date on the first call.

No. We recommend after we see features, device needs, and budget. Native when the OS experience must be perfect; Flutter or React Native when one team should ship both stores. The commercial engagement is the same: a studio that owns delivery, not a stack sermon.