Custom software, web and mobile apps, APIs
Custom software and product engineering that ships and scales.
We design, build and run custom web and mobile software: customer portals, internal tools, dashboards, APIs and integrations, engineered for long term stability and growth.
- Web and mobile
- APIs and integrations
- Security first delivery
Why teams call us
When off-the-shelf software stops fitting the business.
Most teams reach us at the same point. Spreadsheets are carrying work they were never meant to carry, two systems hold the same customer and disagree, and a manual handoff between them eats time every week. Buying another tool adds a login without closing the gap.
Custom software closes it. We build the portal, the internal tool or the integration your process actually needs, on an architecture you can grow, documented well enough that your team or ours can keep improving it after launch.
Who it is for
Custom software for small and mid-sized businesses.
We build for growing businesses that have outgrown spreadsheets and off-the-shelf tools but do not have an engineering department of their own, as well as for larger organizations. The work is the same: software shaped around how your business actually runs.
Internal tools that replace spreadsheets
Quoting, scheduling, approvals and tracking moved out of shared files into a system with roles, history and reporting.
Customer portals
Self-service for orders, bookings, documents and support, so customers stop calling and emailing for routine things.
Integrations between the tools you pay for
Your CRM, accounting, e-commerce and operations systems sharing the same data instead of being re-keyed by hand.
Mobile apps for staff and customers
iOS and Android apps for field teams, bookings, loyalty or service, on the same APIs as your web systems.
What we build
Web applications, customer portals and internal tools
Mobile apps for iOS and Android
Dashboards and reporting on your own data
API design, integrations and data modeling
Performance, accessibility and quality engineering
Security first development and deployment pipelines
Operational readiness with monitoring, logging and runbooks
Three ways to start.
Pick the starting point that matches where you are. Scope and success measures are agreed before any build begins.
Discovery and architecture
Requirements, user flows, data model, architecture plan, delivery milestones, and risk review. Best for new builds or major rewrites.
Build and launch
Full stack engineering, QA, release automation, and production launch with monitoring and rollback options. Best for shipping a production MVP or v2.
Modernization
Stabilize performance, refactor architecture, improve security, and reduce maintenance risk while keeping delivery moving. Best for legacy systems with growth pressure.
How delivery works
From discovery to handover.
Discovery
We map users, workflows, data and constraints, then agree what success looks like and what is out of scope. You get a written architecture and delivery plan.
Architecture
Data model, APIs, system boundaries and security design are settled before code, so later features do not mean rewrites.
Build in milestones
Work ships in reviewable increments with automated tests, code review and a staging environment your team can use.
Launch
Release automation, monitoring and a rollback path are in place before production traffic arrives.
Handover and support
Documentation, runbooks and access move to your team. Ongoing support and improvement are available as a managed service.
AI inside the products we build
AI is optional and governed. It can be shipped as a user feature or used behind the scenes to improve efficiency and consistency.
Search assistants and internal copilots
Workflow automation and document intelligence
Personalization and next step suggestions where appropriate
Proof
Built and running in production.
The same team builds Spell's own products and platforms for clients. A few examples.
What you get
Architecture and API documentation
Source control, environments, and CI CD setup
Testing and release processes
Operational dashboards and alerting foundations
Handover and optional managed support
Questions
Custom software questions.
What does custom software development cost?
It depends on scope, integrations and the support you want after launch, so we do not publish prices. After a discovery call we send a scoped proposal with the engagement model that fits. For a first indication, our proposal generator drafts one from a short description of your project.
Do you build mobile apps as well as web?
Yes. We build native and cross-platform apps for iOS and Android alongside web applications, on the same APIs and data model so both stay in step.
Can you work with our existing systems?
Yes. Most builds connect to something already in place, such as a CRM, ERP, payment provider or legacy database. We design the integration first so data stays consistent across systems.
How do you keep a build on track?
Work ships in milestones with weekly status updates, risk tracking and written decisions, so you always know what is done, what is next and what has changed.
What happens after launch?
You get documentation, runbooks and a proper handover. If you want us to keep running and improving the software, managed services cover monitoring, patching, incident response and ongoing development.
Who does the work?
Delivery is managed directly by Spell Solutions, a US-based company, with clear accountability. Specialist support, when a project needs it, works under the same quality and security standards.
Ready to plan a build
Tell us what you are building and your timeline. We will respond with a clear recommended path and delivery plan.