Mobile Apps That Connect to the Systems You Already Run
A booking, a job update or a payment taken on a phone should reach your CRM, ERP and accounts without anyone typing it in again. We build iOS and Android apps from one cross-platform codebase, connected to the systems your business already runs on.
Core stackReact Native · Flutter · .NET MAUI · TypeScript · iOS · Android · ASP.NET Core · Microsoft Azure · SQL Server · REST APIs
When a Mobile App Is Worth Building
Mobile projects usually start with one of these problems, not with an app idea.
If a web app on a phone is enough, we'll tell you.
A progressive web app can cover many field and customer workflows at a lower cost than a store app.
Web application developmentField teams report work by phone, paper or WhatsApp
Job updates, photos and signatures arrive in chat threads and notebooks. Someone types them into the office system at the end of the day.
Customers expect to book, pay or track on their phone
They want to see the status and act on it themselves. Today they call or email and wait for a reply.
The app doesn't talk to your CRM or back office
Orders and customer details entered in the app have to be exported or copied before the rest of the business can use them.
Your current app is slow, dated or built on Xamarin
Updates are painful, reviews are slipping and Microsoft ended Xamarin support in May 2024.
Six Kinds of Mobile Apps We Build
Pick one to see what it usually involves and how we typically build it.
Customer-facing apps
Apps that let customers book, order, pay and track on their own, with every action landing in the systems your team already uses.
- Booking and ordering
- Account and order tracking
- Loyalty and repeat purchases
Field and workforce apps
Apps for technicians, drivers and sales reps to log jobs and capture photos or signatures, with offline use when the signal drops.
- Job sheets and checklists
- Photo, signature and location capture
- Offline sync
Internal business apps
Approvals, stock checks, inspections and reporting on a phone, built around how your staff actually work rather than a desktop screen squeezed onto mobile.
- Approvals and requests
- Inventory and inspections
- Manager dashboards
App backends and APIs
The backend that handles accounts, data and business rules, so the app stays fast and the logic lives in one place.
- User accounts and roles
- Business logic and data APIs
- Admin panels
Payments, notifications and CRM
The integrations that make a sale or update made in the app reach the rest of the business on its own.
- Payments with Stripe or Razorpay
- Push notifications
- CRM and ERP sync
Modernizing an existing app
Upgrading an app that has become slow or hard to update, including Xamarin apps past end of support, in stages so users are not disrupted.
- Xamarin to .NET MAUI or React Native
- UI and performance refresh
- App store compliance updates
Data Flow First. Screens Second.
Every engagement follows the same problem-first Systems Engineering Method we use across AppPotter.
Map the work and the data
We look at who will use the app, what they do in it and where that data needs to go afterwards.
Decide app, web or integration
We check whether a store app, a web app or a simple integration solves it and recommend the lightest option that works.
Design for small screens
Flows are designed for one-handed use, weak signal and the people who will use them daily, then reviewed with you.
Build in increments
You get test builds on your own phone at agreed checkpoints, so priorities can shift before they become expensive.
Test and release
Device, integration, performance and security checks, then App Store and Google Play submission.
Support and update
OS updates, store policy changes and new features are handled by the same team that built the app.
What Changes When the Process Runs on the Right System
We agree on what to measure during discovery, so success is defined before the build starts, not after launch.
Before: Field updates arrive by phone call and WhatsApp
After: Jobs, photos and signatures logged in the app and synced to the office
Before: Office staff re-type what was captured on site
After: Data entered once on the phone reaches your CRM and ERP
Before: Customers call to book or check status
After: Customers book, pay and track on their own phone
Before: Two apps to maintain for iOS and Android
After: One cross-platform codebase for both
Before: An ageing app nobody wants to touch
After: A maintainable app on a supported framework
Chosen for Your Systems, Not Our Preferences
Most of our mobile work is cross-platform, with React Native, Flutter or .NET MAUI serving iOS and Android from one codebase. Backends run on .NET, hosted on Azure or AWS. Where your existing systems or team point elsewhere, we work with that instead.
Where we have the deepest production experience
- React NativeMobile apps
- FlutterCross-platform apps
- .NET MAUICross-platform apps
- TypeScriptLanguage
- iOSPlatform
- AndroidPlatform
- ASP.NET CoreBackend APIs
- Microsoft AzureCloud
- SQL ServerData
- REST APIsIntegration
Also used when the project calls for it
- Mobile
- Backend
- Data
- Cloud & DevOps
- Testing
Senior Engineers, Directly Involved
- Founder-led delivery
Parth and Umesh are personally involved in every engagement.
From scoping the work to standing behind its outcome, backed by Parth's 14+ years of enterprise technology and delivery experience.
Meet our leadership - Current engagement · under NDA
A long-term software engagement with a US-based technology company.
Client identity and project details are undisclosed due to confidentiality obligations. We treat your work the same way.
See our approach
Ways to Work Together
- Advisory & Discovery
Short-term Strategy Engagements
For a focused, short-term engagement - an assessment, an architecture review, or technical due diligence - before any build begins.
- Comprehensive architecture reviews
- Due Diligence of your tech stack
- Roadmap and Estimation
- Fixed Price
Fixed Cost Model
For clearly-scoped integration or build work, where the outcome and boundaries are already well defined.
- Change Management process
- Milestone-based delivery
- Quality & SLA Commitments
- Dedicated Team
Dedicated Product Engineering Team
For long-term product or systems work - a sustained AppPotter engineering team working against your roadmap, not rotated project to project.
- Seamless onboarding and roadmap planning
- Fixed Monthly Retainer
- PO/Tech-lead Collaborations
Whichever structure fits, Parth and Umesh are personally involved, from scoping the engagement to standing behind its outcome.
Meet our leadershipPart of Custom Engineering
We build custom only when an existing platform, integration or standard product can't solve the business problem.
We build cross-platform with React Native, Flutter or .NET MAUI, so one codebase serves both iOS and Android. For most business apps this gives users a native feel at a lower build and maintenance cost.
Yes. That is the core of most of our mobile work. If your system has an API, the app can read from it and write to it, so data entered on a phone does not need to be typed in again.
Yes. Microsoft ended Xamarin support in May 2024. We review the app, then migrate it to .NET MAUI or React Native in stages, reusing business logic where it makes sense.
If your users only need forms, status and simple updates, a progressive web app may be enough and costs less to run. Store apps make sense when you need offline use, device features like the camera or push notifications.
Yes. We prepare the listings, handle review feedback and manage releases. Apps can be published under your own developer accounts so you keep ownership.
Clearly scoped apps can be fixed price with milestones. Evolving products usually suit a dedicated team or time and material. Most engagements start with a short assessment.
Tell Us What Needs to Happen on the Phone
We'll look at how the work runs today and tell you honestly whether a mobile app is the right answer.
Book a GTM Systems Assessment30-minute call · No obligation · No sales pitch