Mobile App Development · New York

Mobile app development in New York for apps customers keep on their home screen.

Mobile app development is designing and building apps for iPhone and Android devices. Tech Engineers Group builds custom iOS, Android and cross-platform (Flutter) apps for New York businesses, from booking and loyalty apps to internal tools, and supports them after launch.

Get a free quoteCall (914) 774-7931
iOS + AndroidFixed-price quotesApp Store launch included
Best for
Customer & internal apps
Timeline
8–16 weeks
Starting at
$8,000
Built with
Flutter, Swift, Kotlin
Includes
Design, build, launch
The basics

What is mobile app development?

Mobile app development covers planning, UX design, building, testing and publishing an app to the Apple App Store and Google Play, then maintaining it. Cross-platform frameworks like Flutter let one codebase run on both iPhone and Android, which cuts cost and time.

For local businesses, apps work best for repeat customers: bookings, ordering, loyalty rewards, member portals and field-team tools.

Native (two apps) vs Cross-platform (Flutter) at a glance
Native (two apps)Cross-platform (Flutter)
CodebasesTwoOne
CostHigherUp to 40% lower
Time to launchLongerFaster
PerformanceExcellentNear-native
Best forHeavy device featuresMost business apps
Sound familiar?

Problems Mobile apps solves for New York businesses

Customers order once and never come back.

Without a direct channel, repeat business depends on ads.

How we fix it: Loyalty, push notifications and one-tap reordering.

Booking by phone is eating our staff's time.

Phone-only booking limits hours and causes missed calls.

How we fix it: In-app booking, reminders and payments.

Our field team still uses paper and texts.

Manual processes cause errors and slow billing.

How we fix it: Internal apps for jobs, photos, signatures and invoices.
What's included

Our Mobile apps services

Everything you need, handled by one in-house team in New York.

UX/UI design

Screens designed around how your customers actually behave.

iOS & Android

Native or Flutter apps for both platforms.

Push notifications

Bring customers back with timely messages.

Payments & logins

Secure accounts, payments and subscriptions.

Backend & APIs

Cloud backend that connects to your systems.

Launch & support

App Store submission, updates and maintenance.

How it works

Our Mobile apps process, step by step

  1. 1

    Strategy

    Define users, features and success metrics.

    Week 1–2
  2. 2

    Design

    Clickable prototype for your approval.

    Week 2–4
  3. 3

    Build & test

    Development in sprints with test builds.

    Week 4–14
  4. 4

    Launch & support

    App Store release and ongoing updates.

    Week 8–16
Results

What Mobile apps did for a New York business

E-commerce · Brooklyn, NY

We Are Small (Next Gen Brands)

4.8★App Store rating
32%of orders via app
+41%repeat purchases
Source: App analytics · 6 months
★★★★★
"The app works flawlessly on iOS and Android. Clear communication and delivered on time. A partner we can trust."
Michael AndersonCEO

See more client results →

Pricing

Mobile apps pricing in New York

Fixed prices, no hidden fees, no long-term contracts.

MVP

Validate your idea fast
$8,000 starting at
  • Core features
  • One platform or Flutter
  • Basic backend
  • App Store launch
Get started
Most popular

Business app

Full-featured customer app
$18,000 starting at
  • iOS + Android (Flutter)
  • Payments & accounts
  • Push notifications
  • Admin dashboard
Get started

Enterprise

Complex apps & integrations
Custom
  • Custom integrations
  • Advanced security
  • Dedicated team
  • SLA support
Get started

Prices are starting points. You get a fixed written quote within one business day. Read our guide: How much does it cost to build an app in New York? →

Service areas

Mobile apps across New York

Based in Piermont, NY. We provide Mobile apps services to businesses throughout the New York metro area, in person or remotely.

  • Manhattan
  • Brooklyn
  • Queens
  • The Bronx
  • Staten Island
  • Westchester County
  • White Plains
  • Yonkers
  • Rockland County
  • Nyack
  • Hudson Valley
  • Long Island
  • Home servicesHVAC, plumbing, roofing
  • HealthcareDental, clinics, med spas
  • RestaurantsDining, catering, cafés
  • E-commerceOnline stores, D2C brands
  • Professional servicesLaw, accounting, consulting
  • Real estateBrokers, property managers
FAQ

Mobile apps questions, answered

Straight answers to what New York business owners ask us most.

How much does it cost to build an app in New York?+
Most business apps cost between $8,000 and $40,000 depending on features. We provide a fixed quote after a free discovery call.
How long does app development take?+
A focused MVP takes about 8 weeks; a full business app typically takes 12 to 16 weeks.
Should I build native or cross-platform?+
For most business apps, cross-platform (Flutter) is faster and cheaper with near-native performance.
Do you publish the app to the App Store?+
Yes. We handle Apple App Store and Google Play submission.
Who owns the app and code?+
You do. Full source code and accounts are yours.
Do you maintain apps after launch?+
Yes, with monthly support plans for updates, OS changes and new features.
Works well with

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Ready to grow with Mobile apps?

Free 30-minute consultation. Honest advice and a fixed quote, whether you hire us or not.

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