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Web · iOS · Android · Portals

Custom Software Development for Web, Mobile and Portals

Custom software development from Seqora means web apps, iOS and Android apps, client portals and internal platforms, set up on your own cloud accounts and built for production from the first release. We also take products that work but aren't ready for real customers and make them launch-ready, with security, tests, guarded deployments, monitoring and performance work, without starting over. AI goes in only where it does a job better than a plain rule. You keep the code, the accounts and the documentation.

Book a free scoping call How it works
  • Built on your own cloud accounts
  • Tests, rollback and monitoring
  • You own the code and the docs
01 Scope and code review Users, data, risks, what exists 02 Your cloud accounts Infrastructure defined as code 03 Build in releases Staging builds you can click through 04 Test and harden Security, load and end-to-end tests 05 Launch and hand over Monitoring, runbooks, documentation
From scope to handover

What is custom software development?

Custom software development is a service that builds software around one business's users, data and workflows, instead of bending the business around a generic tool. At Seqora that means web apps, iOS and Android apps, client portals and internal platforms, with AI only where it earns its place. Each one is set up on your own cloud accounts and handed over with tests, monitoring and documentation.

  • Who it's for: founders with a product to launch or fix, and firms whose work has outgrown spreadsheets and off-the-shelf tools
  • What you get: a working web or mobile app, portal or platform, plus the code, infrastructure definitions, tests and runbooks
  • How it works: a written scope, small releases to a staging site you can click through, and a launch gated by tests and monitoring
  • Proof: a K-12 learning platform whose production stack we rebuilt on the client's own cloud accounts, with 53 defects closed and verified in the first three and a half weeks of the engagement
Why projects stall

Why do working apps still fail with real customers?

Getting a demo to work is the easy part now. AI coding tools can produce screens in an afternoon. A product that a school, a bank or a paying customer can rely on is a different thing.

The gap is mostly invisible: separate data for each customer, checks on the server instead of the browser, automated tests, and backups that actually restore. Then there are deployments that roll back on their own, alerts when something breaks, and infrastructure in an account the business controls. Skip those and the first paying users find the problems for you.

Starting over is rarely the answer. Usually the faster path is to keep what works, fix what's risky, and put a release process around it, so every change after launch is safe to ship.

Ownership is planned from day one. Projects are set up on cloud and code accounts in your name, or inside the ones you already have, so hosting, access and the next developer don't have to depend on us.

~50fps

Camera-game frame rate on a classroom Chromebook, up from about 10, after pose detection moved to a background worker with adaptive resolution

K-12 learning platform · 2026

53

Defects closed and verified in the first three and a half weeks of a launch-readiness rebuild

K-12 learning platform · 2026

391

API tests passing at the release audit of a redesigned iOS and Android travel app

Release audit · Sept 2026

What we build

Apps, portals and the parts nobody sees

Most projects combine several of these. The scoping call decides which ones you need and in what order.

Web apps and platforms

Customer-facing apps, dashboards and multi-user platforms with separate roles for staff, clients and admins, built on Next.js or React with a typed API and a real database behind them.

iOS and Android apps

React Native apps with native social and email login, push notifications, maps and chat, built to App Store requirements like content moderation and full account deletion and delivered through TestFlight.

Client portals and secure uploads

Portals where your customers upload documents through protected links and sign electronically while your team tracks progress, with every file filed where your team already works. When the documents need reading, we add AI document processing.

AI where it does a real job

AI reads, classifies and drafts, and explicit rules make the decisions. Where AI drafts something that goes to a customer or another party, such as a filled form or a report, the workflow is built so a person approves it first. For larger autonomous work, see custom AI agents.

Launch-readiness rebuilds

For products that work but aren't ready for real customers: security hardening, data separation between accounts, performance work and a proper release process, keeping the code that already works.

Infrastructure, tests and monitoring

Infrastructure defined as code on your accounts, automated tests, deployments that roll back on failed health checks, alerts, and backups with a tested restore.

How it works

How a custom software project runs

Scope is written down before work starts, and you can see the product working long before launch.

  1. 01

    Scoping call and code review

    We map the users, the data and the workflow. If there's existing code, we read it before quoting. You get a written scope with fixed deliverables, what's out of scope, and the risks we see.

    Week 1
  2. 02

    Set up on your accounts

    Cloud, code and database accounts are set up in your name, infrastructure is defined as code, and a staging site is set up early so you can see features as they land. If you already have accounts, we work inside them.

    Weeks 1–2
  3. 03

    Build in short releases

    Work ships to staging in small releases you can click through, each with a short note on what changed. Tests are written alongside each feature, not saved for the end.

    Every 1–2 weeks
  4. 04

    Harden and audit for launch

    Security review, browser and device end-to-end tests, load tests sized to your real usage, and a release audit with the results written down. Mobile builds go through TestFlight before store review.

    Before launch
  5. 05

    Launch, monitor and hand over

    Deployments are designed to roll back on their own if health checks fail, and alerts are routed to the right person. You get runbooks and documentation written for the next developer, whether that's us or your own team.

    Launch and after
Proof

Web, mobile and portal work delivered for real clients

A launch-readiness rebuild, a mobile redesign, a client portal and a new process inside an existing system. Every figure comes from each project's own records.

K-12 learning platformLive at groovit.com

Groovit

A working K-12 learning platform the founder brought us in to make ready for real schools: production rebuilt on the client's own AWS, Vercel and MongoDB Atlas accounts, per-school data isolation, tests, guarded deployments and monitoring. Pose detection moved to a background worker with adaptive resolution, taking the camera game from about 10 to about 50 frames per second on a classroom Chromebook.

Result

The camera game went from about 10 to about 50 frames per second on a classroom Chromebook, and 53 defects were closed in the first three and a half weeks.

Travel community appDelivered to TestFlight

JTravel

An app that was already live on the App Store before we started, redesigned end to end on top of its existing codebase, with native email, Apple and Facebook login, trip matching, a host-and-guest meal marketplace with public RSVP links, a web admin dashboard and App Store hardening. The redesign was delivered to TestFlight.

Result

All six signed pilot deliverables delivered, plus work beyond scope, with the API test suite passing at 391 tests at the release audit.

Commercial real estate financeDeployed · repeat client

AST Defeasance

A secure borrower-onboarding portal with protected upload links, AI that classifies and reads each document, a rule engine for ownership decisions, automatic filling of each partner bank's own forms, analyst approval, e-signature and OneDrive filing.

Result

A second engagement after our first project for them. Six bank-specific document sets went to production after a 216-page audit with all 126 text checks passing.

Medicaid enrollment servicesIn production

100 Boulevard

Not every build is a new app. Inside 100 Boulevard's existing cloud document system, we added an AI validation process that matches proof documents to each application entry and explains anything it can't verify, backed by 452 automated tests.

Result

Zero extraction errors across the first 30 production cases, and 576 cases completed in a single production day.

Why Seqora

What you can check before you hire us

Your accounts from week one

We set production up on accounts in your name from the start. On the K-12 platform, the client's own AWS, Vercel and MongoDB Atlas accounts were serving production about a week after work began.

Releases with numbers attached

391 API tests passing on a travel app, backend checks grown from 116 to 478 on a learning platform, and all 126 text checks passing on a finance portal's bank documents.

Clients come back

AST Defeasance hired us for a second build after the first one shipped: a historical deal-document pipeline first, then their borrower-onboarding portal.

The difference

Off-the-shelf software or a custom build?

Off-the-shelf is often the right call. A custom build makes sense when the tool keeps forcing workarounds.

CompareOff-the-shelf toolSeqora custom software
FitYou change your process to match the toolBuilt around how your team and customers already work
OwnershipPer-seat fees, data in the vendor's cloudCode in your repository, running on your cloud accounts
IntegrationsWhatever connectors the vendor offersDirect connections to your files, e-signature, database and existing systems
AIGeneric features on the vendor's scheduleAI only where it does a job, behind explicit rules, with human approval where it counts
ChangesWait for the vendor's roadmapShip the change when you need it, with tests and rollback
Who we build for

Custom software for practices, firms and product teams

Dental Practices

Patient portals and practice tools

Intake and upload portals for patients, internal tools for the front desk and clinicians, and the connections between them, built for HIPAA workloads with a BAA when the work touches patient data.

Dental
Personal Injury Law

Client onboarding portals

Protected uploads, AI that reads medical records and intake documents, rules that fill your forms, attorney approval and e-signature, with every file saved to your firm's storage.

PI law
Founders and product teams

Launch-ready products

A working web or mobile app that isn't ready for real users yet: we harden security, add tests and monitoring, speed it up, and prepare it for launch and App Store review.

Pricing

What custom software development costs

Every project is quoted after a free scoping call and, for existing products, a short code review. These are the things that move the number:

  • Platforms: web only, or web plus iOS and Android
  • How many user roles and permission levels the product needs
  • Integrations with your existing systems, file storage and e-signature
  • How much AI the workflow actually needs, and the review steps around it
  • For existing products, how much hardening and testing the code review finds
  • Support, monitoring and feature work after launch

What's fixed before we start: the deliverables, what's out of scope, and how acceptance works. At handover you get the code, infrastructure definitions, tests and documentation, whether or not you keep us on.

Stack

Tools and platforms we build on

  • Next.js
  • React
  • React Native
  • Node.js
  • Python and FastAPI
  • PostgreSQL
  • MongoDB Atlas
  • AWS
  • Google Cloud
  • Vercel
  • GitHub Actions
  • Microsoft Graph and OneDrive
  • TestFlight and App Store Connect
  • Claude API
FAQ

Custom software development: common questions

How much does custom software development cost?

Most projects get a fixed price per defined phase, quoted after a free scoping call and, for existing products, a short code review. The main drivers are the platforms (web, iOS, Android), the number of user roles, the integrations, and how much existing code needs hardening. You see the written deliverables before work starts, so the price and the finish line are both clear.

How long does it take to build an app?

Most projects run from a few weeks to a few months. A launch-readiness rebuild can have production running on your own accounts in the first week or two; on one project it took about a week. Mobile apps take longer because App Store review adds its own cycles. The scope lists every milestone, and staging lets you see progress as it happens.

Do we own the code?

Yes. The code lives in your repository, the infrastructure runs on your cloud accounts, and apps are published under your developer accounts. At handover you get the documentation, runbooks and test suites, so another developer can pick it up. There's no license fee or hosting lock-in from us.

Can you fix an existing app instead of rebuilding it, even one built with AI tools?

Usually, and it's often the faster path. We read the code first, keep what works and fix what's risky: security, data separation, performance, tests and the release process. AI-written code gets the same review as any other. On one K-12 platform, we consolidated and hardened the existing product while new releases kept shipping, so it kept moving while it got safer.

How do you handle security and sensitive data?

Each customer's data is kept separate by design, the checks that matter run on the server, secrets live in an encrypted store, and access is limited to the people who need it. Data is encrypted in transit and at rest, your data is never used to train public models, and we sign a BAA when the work touches patient data. For regulated work, see private AI infrastructure.

What happens if something breaks after launch?

Releases are built to fail safely. Deployments are designed to roll back to the last good version on their own when health checks fail, alerts are routed to your team, and the backup plan includes a tested restore. After handover you can keep us on for support and new features, or give the runbooks to your own developer.

Related services

Often paired with

Custom AI Agent DevelopmentAgents that run, check their own work, retry and escalate.Private AI InfrastructureAI that runs in your cloud. Your data never trains public models.AI Document ProcessingReads PDFs, scans and handwriting. Extracts, checks, drafts.

Further reading: AI agent, workflow, or dashboard: how to decide where AI actually belongs

Free scoping call

Tell us what you need built

Bring the product, the half-built app or the workflow. In one call we'll tell you what it would take, what we'd keep, what we'd change, and what you'd own at the end.

Book a free strategy call gabriel@seqora.io
We reply within one business day.