Mobile app development in New York

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 my free quote Call (914) 774-7931

iOS + AndroidFixed-price quotesApp Store launch included

What repeat customers could be worth

+$0extra revenue a year

Extra repeat orders a month40Average order value$35

Example math using your own numbers. Move the sliders to match your business. Not a promise of results.

See prices ↓

Starting at$8,000

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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.

Why it matters to you

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

Get my free audit →

Native (two apps) vs Cross-platform (Flutter)

Both work. This is how they compare for most business apps.

Native (two apps)Two separate apps

•
CodebasesTwo
•
CostHigher
•
Time to launchLonger
•
PerformanceExcellent
•
Best forHeavy device features

Cross-platform (Flutter)Our usual pick

✓
CodebasesOne
✓
CostUp to 40% lower
✓
Time to launchFaster
✓
PerformanceNear-native
✓
Best forMost business apps

Get a fixed app quote

Written quote within one business day.

Problems a mobile app solves for New York businesses

If any of these sound familiar, we can help.

Customers order once and never come back.

Without a direct channel, repeat business depends on ads.

How we fix itLoyalty, 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 itIn-app booking, reminders and payments.

Our field team still uses paper and texts.

Manual processes cause errors and slow billing.

How we fix itInternal apps for jobs, photos, signatures and invoices.

Mobile app development 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 we build your app, step by step

You'll know the price and the timeline before we start.

Strategy

Define users, features and success metrics.

Week 1–2

Design

Clickable prototype for your approval.

Week 2–4

Build & test

Development in sprints with test builds.

Week 4–14

Launch & support

App Store release and ongoing updates.

Week 8–16

What our clients say

5.0

★★★★★on Google, every review verified

★★★★★

Before hiring Tech Engineers Group, our phone barely rang from organic web searches. Michael optimized our site structure and overhauled our SEO from top to bottom. Now we are consistently outranking legacy competitors in our service area and getting a steady stream of qualified inbound leads. Worth every single penny.

ONOmar N.Google review · October 2026 · SEO

★★★★★

"I hired Tech Engineers Group to develop a custom app from scratch for my e-commerce business, and I couldn't be happier with the results. They took the time to understand my specific business needs and built a high-performance app that is both intuitive and reliable."

LSLisa Sterling-NunezGoogle review · March 2026 · Custom app

★★★★★

"Michael, Rana and the entire team know app development and truly have a passion for producing multidimensional apps that showcase all of the customer's needs. Highly recommended. If you seek knowledge and excellence, hire this company!"

JFJoseph FarrellGoogle review · October 2026 · App development

★★★★★

"As an IT consulting partner, Michael has been invaluable to our operations. He streamlined our entire digital infrastructure, secured our networks, and advised us on scalable software solutions. His decades of experience really show in how efficiently he solves complex tech challenges."

DLDorian LippmanGoogle review · October 2026 · IT consulting

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Mobile app development 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 a fixed quote

Business app

Full-featured customer app

$18,000

starting at

iOS + Android (Flutter)
Payments & accounts
Push notifications
Admin dashboard

Get a fixed quote

Enterprise

Complex apps & integrations

Custom

quoted per project

Custom integrations
Advanced security
Dedicated team
SLA support

Get a fixed quote

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? →

Mobile app engineers across New York

Based in Piermont, NY. We build mobile apps for businesses throughout the New York metro area, in person or remotely.

ManhattanBrooklynQueensThe BronxStaten IslandWestchester CountyWhite PlainsYonkersRockland CountyNyackHudson ValleyLong Island All areas →

Industries we work with

Home servicesHVAC, plumbing, roofing, cleaning

HealthcareDental, clinics, med spas, wellness

RestaurantsDining, catering, cafés

E-commerceOnline stores, D2C brands

Professional servicesLaw, accounting, consulting

Real estateBrokers, property managers

Auto servicesRepair shops, oil change, car wash & detailing

Building tradesElectricians, contractors, remodelers, roofers

Get a fixed app quote

Tell us about your app idea. We reply with scope, timeline and a fixed price.

Fixed written quote within 1 business day
No long-term contracts
You own the app, code and accounts

Prefer to talk? Call (914) 774-7931

Get my app quoteTakes 30 seconds

✓ Reply in 1 business day · ✓ No obligation · ✓ No spam

Mobile app questions, answered

Straight answers to what New York business owners ask us most. Or call (914) 774-7931 and talk to an engineer.

App cost in NY Pricing All FAQs

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. See our full app cost guide →

How long does app development take?+

A focused MVP takes about 8 weeks, and a full business app typically takes 12 to 16 weeks. The timeline depends mostly on the number of screens, integrations and user roles, and we confirm it in your fixed quote before work starts.

Should I build native or cross-platform?+

For most business apps, cross-platform (Flutter) is faster and cheaper with near-native performance, because one codebase runs on both iPhone and Android. Separate native apps in Swift and Kotlin make sense when you need heavy device features or maximum performance.

Do you publish the app to the App Store?+

Yes. We handle submission to the Apple App Store and Google Play, including store listings, screenshots and review requirements. The apps are published under your own developer accounts, so you stay in control.

Who owns the app and code?+

You do. Once the project is paid in full, the full source code and the App Store and Google Play accounts are yours. There is no lock-in, so you can work with any developer in the future.

Do you maintain apps after launch?+

Yes. Monthly support plans cover updates for new iOS and Android versions, bug fixes, security patches and new features. Regular updates keep your app working and meeting App Store and Google Play requirements.