Mobile App Development

Apps people keep on their home screen.

Native and cross-platform iOS and Android apps, from fintech and streaming to connected hardware, designed, built and launched to the stores.

Book a free AI auditSee engagement models
iOS + Android
from one senior team
1,000+
organizations on Switch
Store-ready
launch & release support
What you get

Everything to go from idea to production.

01

Native & cross-platform

Swift and Kotlin, or React Native for one codebase, chosen in discovery by what the app touches: Bluetooth, camera, background work or plain screens and forms.

02

Payments & wallets

Card issuing through a partner bank, in-app purchases and subscriptions through RevenueCat or Stripe, and Apple Pay and Google Pay, with the ledger on a backend you own.

03

Hardware, BLE & AR

Pairing, reconnection after dropouts and real-time control of wearables, sensors and IoT devices, within the limits the device firmware sets. We have also delivered AR features for a client under NDA.

04

Live video

Going live from a phone, recording and playback, with free previews and paywalls tied to subscriptions.

05

Offline-first

Local storage and a sync queue, so the app keeps working without signal and resolves conflicts when it reconnects.

06

Launch & growth

Store listings, TestFlight and Play testing tracks, analytics, push notifications and A/B tests, set up before the first public release.

How we deliver

  1. STEP 01

    Design

    Flows and prototype in weeks.

  2. STEP 02

    Build

    Two-week sprints, live demos.

  3. STEP 03

    Test

    Device lab, beta, QA.

  4. STEP 04

    Launch

    Store release and iteration.

From our apps

Three apps, three different hard parts.

Every app has screens and sign-in. What sets the schedule and the price is the one part that touches money, hardware or video. Here is that part in three apps we shipped.

Switch · money

Cards, pools and a partner bank

Group accounts with roles for treasurers and members, Visa debit cards issued in seconds through Thread Bank, and MoneyPools links that collect money on the web without an install. Live on iOS, Android and web.

OHM · hardware

A phone app that drives a 20-electrode suit

Native iOS and Android apps pair with the emPower Suit over Bluetooth LE and change intensity per muscle group during a 25-minute session. All four training modes run inside session limits and intensity guardrails.

DubCam · video and payouts

Live streams that pay creators

Programs go live from a phone, fans watch 10 minutes free before they subscribe, and half of each subscription is credited to the creator they picked. Creators are paid monthly, on the 1st, with no minimum balance.

Paying creators or sellers from the app

Model the app store’s cut and the payout fees before you promise a revenue split. Creator revenue share and payouts

Proof you can check

Switch is used by 1,000+ organizations, from university clubs to national chapters. OHM and DubCam both ship through the App Store and Google Play.

OHM shipped as native iOS and Android apps. For most products we start cross-platform and go native only where hardware or video demands it. Native vs cross-platform

Stack by category

Native

  • Swift
  • Kotlin

Cross-platform

  • React Native

Backend & payments

  • Firebase
  • Stripe
  • RevenueCat

Hardware

  • Bluetooth LE

Industries

FintechHealthcare & WellnessMedia & StreamingIoT
Build or buy

Native, cross-platform or no-code?

The right choice depends on what the app has to touch, not on fashion.

Your situationOur recommendation
A content, booking or simple internal appA no-code builder may be enough
Most consumer and B2B productsCross-platform: React Native
Deep hardware access, heavy video or extreme performanceNative Swift and Kotlin
An existing app that crashes or ships slowlyCode audit first, then stabilize

Our recommendation: cross-platform by default; native where the hardware or performance demands it.

Typical engagement

What a mobile app costs and how long it takes.

  1. 01 · 2 weeks

    Discovery Sprint

    $5,000
    fixed fee · 2 weeks

    Flows, a clickable prototype, the native vs cross-platform decision and a fixed build quote.

  2. 02 · 6–16 weeks

    Fixed-Price Build

    $25k–$120k
    per project · 6–16 weeks

    iOS and Android apps with backend, QA on real devices, and store release.

  3. 03 · Ongoing

    Dedicated Team

    From $12k
    per month · cancel anytime

    OS updates, new features, analytics and A/B tests on a monthly roadmap.

Built by one in-house team, from discovery to launch and support. AI makes us fast; a senior engineer decides what goes live. Meet the team

What moves the price: the number of platforms, payment or banking integrations, hardware pairing, offline sync and the admin tools behind the app. Compare engagement models

Selected work

Shipped with this.

Guides

Read before you build.

FAQ

Common questions.

Native or cross-platform?

Cross-platform for most products; native when you depend on deep hardware access or extreme performance. We help you choose in discovery, before the build is quoted.

Do you handle App Store approval?

Yes. We prepare the store listings and privacy details, check the build against Apple’s App Review Guidelines and Google Play policies, run TestFlight and Play testing tracks, and roll releases out in stages. Apps are published under your own developer accounts.

Can you take over an existing app?

Yes. We start with an audit of the code, crash reports, dependencies and release process, then give you a fixed quote to stabilize it. New features come once crashes and the build pipeline are under control.

How much does it cost to build a mobile app?

Most engagements start with a 2-week Discovery Sprint ($5,000 fixed fee, credited to your build), followed by a fixed-price build ($25k–$120k per project, 6–16 weeks) or a dedicated team (from $12k per month). The build price is fixed after discovery and billed in milestones tied to demoed features. Apple and Google developer accounts, backend hosting and payment or card-issuing provider fees are separate running costs we estimate in discovery.

How long does it take to build a mobile app?

Flows and a clickable prototype come out of the two-week Discovery Sprint. A first store release is a fixed-price build of 6–16 weeks; apps with banking, hardware or live video need the longer end of that range.

Do you build for iOS and Android at the same time?

Yes. One senior team ships both, natively or from one cross-platform codebase. Switch, OHM Fitness and DubCam all launched on iOS and Android.

Can the app connect to hardware, payments and our backend?

Yes. We integrate Bluetooth LE devices (the OHM app controls a 20-electrode EMS suit), card issuing and wallets (Switch issues Visa debit cards), subscriptions and your existing APIs.

Who owns the app, the code and the store listings?

You do. Code is in your repository from day one, the apps are published under your own Apple and Google developer accounts, and the IP is yours.

What happens after launch?

Every build includes 30 days of support for fixes and store updates. After that, a monthly retainer or dedicated team handles OS updates, new features, analytics and A/B tests.

Should we use a no-code app builder instead?

A no-code or template builder is fine for a simple content, booking or internal app. Choose custom development when the app moves money, controls hardware, streams video or needs to scale, because those depend on native APIs and a backend you own.

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