Imagine your customers opening their phone, tapping your app, and buying from you in seconds. GRADAX builds custom mobile apps that make it easy for people to connect with your business — anytime, anywhere.
10,000+
Businesses Served
99.97%
Uptime Guarantee
4.9/5
Client Satisfaction
Simple pricing, no hidden fees. Pick the plan that fits your business.
Get your business on one platform — iPhone or Android.
Reach all customers on both iPhone and Android with more features.
For businesses that need a powerful, full-featured app.
What does monthly hosting include? Your app needs a home on the internet to store data, process requests, and stay online. Our hosting covers: 24/7 availability, data storage, security updates, performance optimization, and server maintenance.
Three simple steps to get started.
What problem does your app solve for your customers? Ordering? Booking? Browsing your products? We'll walk you through the options. No technical knowledge required.
Our team designs how your app looks and feels, then builds it. You'll see previews along the way and can test it on your own phone before it goes live.
We submit your app to the Apple App Store, Google Play, or both. Once approved, your customers can download it and start using it right away.
What problem does your app solve for your customers? Ordering? Booking? Browsing your products? We'll walk you through the options. No technical knowledge required.
Our team designs how your app looks and feels, then builds it. You'll see previews along the way and can test it on your own phone before it goes live.
We submit your app to the Apple App Store, Google Play, or both. Once approved, your customers can download it and start using it right away.
Professional features that make your app stand out.
An app that looks clean, modern, and professional. Your customers will feel confident using it.
Reach customers no matter what phone they use.
Let customers create accounts, save preferences, and come back easily.
Send messages directly to customers' phones. Perfect for sales, reminders, and updates.
Your app connects to your existing systems — product list, booking system, or payment processor.
We handle all the paperwork and technical requirements to get your app approved and listed.
After launch, we're still here. If something needs fixing or updating, you can reach out anytime.
Your customers' data is protected with the same security standards used by major companies.
We keep your app compatible with the latest iOS and Android versions.
Trusted Technology Partners
Custom apps tailored to your industry needs.
Mobile ordering, reservations, loyalty programs, and menu browsing.
Salons, spas, dentists — booking apps that reduce no-shows.
Product browsing, mobile shopping, order tracking, and notifications.
Class schedules, workout tracking, and membership management.
Property browsing, virtual tours, saved searches, and agent messaging.
Patient portals, appointment scheduling, and medication reminders.
Route tracking, delivery status updates, and customer notifications.
Course access, assignment submission, and progress tracking.
Job scheduling, time tracking, and photo documentation for contractors.
Tenant portals, maintenance requests, and rent payments.
Event calendars, donation processing, and volunteer coordination.
Service booking, vehicle tracking, and maintenance reminders.
We build mobile apps for businesses in every state.
Whether you need an app for local customers or a nationwide audience, our team delivers professional results on time and on budget.
Our team builds custom iPhone and Android apps for businesses across Manhattan, Brooklyn, Queens, and the greater New York metro area.
We create custom mobile apps for businesses throughout LA County — from tech-forward companies in Venice to retail stores in the Arts District.
Our team serves businesses across the Chicagoland area, from the Gold Coast and Lincoln Park to Evanston and Aurora.
Houston businesses trust us for professional mobile app development, from Montrose to the Medical Center and the Energy Corridor.
We help businesses across South Florida — from Brickell and South Beach to Coral Springs and Hollywood.
GRADAX also proudly serves businesses in:
No matter where your business is located in the United States, we deliver the same high-quality mobile app development, fast turnaround, and dedicated support. Our entire process is online, so geography is never a limitation.
Mobile apps have fundamentally changed how American consumers interact with businesses. Over 90% of mobile time is spent in apps rather than web browsers, and the average American checks their phone 96 times per day. For business owners, this represents an enormous opportunity to stay connected with customers. A mobile app creates a direct, persistent connection between your business and your customer that no other marketing channel can replicate. Your app icon on their home screen is a constant reminder of your brand, and the convenience of one-tap access makes doing business with you the path of least resistance.
A custom mobile app puts your business directly on your customer's home screen. Unlike a website that requires opening a browser and typing in an address, your app is just one tap away. This instant accessibility creates a level of convenience that drives repeat business and customer loyalty. The psychology of having your app installed is powerful — it moves your business from something customers have to search for to something that is always within reach. This shift from search-based discovery to app-based convenience is why businesses with mobile apps see significantly higher customer retention rates and more frequent transactions than those without.
Push notifications are one of the most powerful features of a mobile app. When you have a sale, a new product, or a special announcement, you can send a message directly to every customer who has your app installed. Unlike email, push notifications appear on the lock screen and have open rates as high as 40%. Used strategically — not spamming, but delivering genuinely valuable messages — push notifications drive immediate action. A restaurant can send a lunch special at 11 AM. A gym can remind members about a class starting in an hour. A retailer can announce a flash sale. The immediacy and visibility of push notifications make them one of the highest-ROI features of any business app.
For businesses that rely on appointments — salons, medical practices, fitness studios — a mobile app with booking capabilities can dramatically reduce no-shows and fill empty slots. Customers can book, reschedule, and manage appointments right from their phone. Automated reminders sent through the app reduce no-show rates by up to 50% compared to phone-based booking systems. Self-service rescheduling means canceled appointments can be filled quickly without requiring your staff to make calls. For appointment-based businesses, these efficiency gains alone often justify the investment in a mobile app.
One of the biggest misconceptions about mobile app development is that it's only for large corporations with massive budgets. Modern development frameworks allow experienced teams to build high-quality apps at a fraction of what it cost just five years ago. Our Starter plan begins at $2,999. Cross-platform development tools mean we can build for both iPhone and Android simultaneously, cutting development time and cost in half compared to building two separate native apps. The democratization of mobile app development has made custom apps accessible to businesses of every size, from single-location restaurants to growing e-commerce brands.
The most successful business apps share critical qualities: they solve a real problem, they are simple and intuitive, they use push notifications strategically, and they look and feel professional. We design every app with clarity and ease of use as top priorities. The app design process starts with understanding the primary actions your customers need to take — ordering food, booking a class, browsing products, tracking an order — and designing the shortest possible path from opening the app to completing that action. Every unnecessary screen, form field, or navigation step is a point where customers drop off. Simplicity is not just a design preference — it is a business requirement.
We use modern cross-platform frameworks that allow us to build your app for both iPhone and Android from a single codebase. This means faster development, lower costs, and easier maintenance. Your app's backend runs on enterprise-grade cloud infrastructure with automatic scaling, daily backups, and 24/7 monitoring. When your app gains traction and usage grows, the infrastructure scales automatically to handle the load without performance degradation. This cloud-native approach means you never have to worry about server capacity — your app performs reliably whether you have 100 users or 10,000.
All data transmitted between your app and our servers is encrypted. User passwords are securely hashed. Payment processing goes through PCI-compliant providers. Your customers' personal and financial information is protected at every level. We follow industry best practices for mobile security, including certificate pinning, secure token storage, and regular security audits. For businesses in regulated industries like healthcare and finance, we can implement additional compliance measures to meet HIPAA, PCI, and other regulatory requirements.
App Store submission and approval is a process that many business owners underestimate. Apple and Google have specific requirements for app functionality, design, content, and privacy policies. Rejection during the review process can delay your launch by weeks. GRADAX handles the entire submission process — preparing your App Store listing with optimized descriptions and screenshots, configuring certificates and provisioning profiles, and managing the review process through approval. We have successfully launched hundreds of apps and know exactly what the review teams are looking for, which means fewer rejections and faster launches.
After your app launches, the work is not over. iOS and Android release major operating system updates annually, and these updates can affect your app's functionality, appearance, and compatibility. GRADAX's ongoing support plans ensure that your app stays compatible with the latest OS versions, receives security patches, and continues to perform as expected. When you want to add new features, we scope and build them as separate projects with clear timelines and pricing. Your app is a living product that evolves with your business, and we are here for the long term.

Guides and insights to help you make informed decisions.
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Everything you need to know. Can't find an answer? Contact us.
GRADAX offers a full range of build and design services for your business.
Beautiful, mobile-friendly websites that bring you customers. Starting at $499.
Professional logo, brand colors, and complete visual identity. Starting at $299.
SaaS, portals, dashboards — we build your app or you hire our developers. Starting at $1,999.
Professional online stores with payments, shipping, and inventory. Starting at $899.
An app makes it easy for people to find you, buy from you, and come back again and again. GRADAX will build it. You'll own it. Your customers will love it.