Custom applications & business systems
Software built around your business
Build an application, internal tool or customer portal around the work your business needs to do. Connect your systems, simplify everyday tasks and give your team software that fits.
For startups building a first product and established teams replacing spreadsheet workarounds, disconnected systems or software that no longer fits.
How it comes together
From user task to owned application
Users and requirements
Agree the real task and useful first release.
Interfaces and permissions
Define records, roles and system boundaries.
Build and acceptance
Review working increments against real tasks.
Release and handover
Transfer the agreed source and operating knowledge.
Build around a real user and a useful release.
Separate discovery, interface work and ongoing operations so that you can choose the next increment with a clear view of its obligations.
A first application or portal
Define who uses it, which task it completes and the data and access it needs. Test the central journey before expanding the product.
Start with: an Implementation Assessment and a bounded first-release brief.
An internal tool or integration
Connect a specific handoff, calculation or approval using the systems already in place. Keep the permitted actions explicit.
Start with: a Focused Integration with interface and acceptance criteria.
An existing system needs work
Inspect the actual source, deployment and known failure paths before estimating a change. Preserve useful behavior and data.
Start with: a scoped system review and a prioritized repair or extension plan.
A prototype tests an idea; a production application also needs agreed access controls, failure behavior, release and operating responsibilities. The proposal distinguishes custom work from existing components, and defect correction from new requirements.
What you get
Built for your business.
Ready for your team.
A clear plan for your application
Agree users, journeys, business rules and the smallest useful release. Record the data model, interfaces, access roles and exclusions, including what can be bought or reused.
Software built around your workflow
Implement the agreed screens and behavior, with authorized connections to existing systems. Define validation, permissions, error handling and the experience when a dependency is unavailable.
The source and guidance to take ownership
Provide the agreed source and configuration, tests, setup instructions and known limitations. Document data movement, deployment and recovery when they are in scope, with an accountable owner for ongoing operation.
How we check the work
Accept the actual behavior, not only the appearance of a screen. Keep material limitations visible at handover.
- The agreed user journeys work at the required screen sizes and with keyboard access.
- Allowed and denied roles, validation, duplicate actions and dependency failures behave as specified.
- Integration data and business rules are checked against approved examples; migration checks apply where data is moved.
- Source, setup instructions, release or rollback notes and outstanding actions have named recipients.
Getting started
What we need from you
Your team owns the business rules and the decisions that make a useful application.
- Intended users, a product or process owner, priority tasks and review availability.
- Approved examples, existing interfaces and data definitions; begin with synthetic records where possible.
- Authorized repository, environment and integration access through an agreed secure method, plus relevant licensing and ownership constraints.
Review the work
Illustrative scope: a shared project workspace
A portal could let a customer submit a request, a staff member review it and an owner approve the next action. Role checks, an unavailable integration and duplicate submissions belong in its acceptance tasks. This is a hypothetical application scope, not a published client outcome.
Review the boundaries of published owned workFrom first conversation to daily use
- Map the people, workflows and systems the application must serve. Turn the agreed first release into inspectable requirements and acceptance tasks.
- Build in reviewable increments, exercise realistic and adverse paths, and review the result with intended users. Record changes against the agreed scope.
- Complete acceptance and the purchased release or handover. Transfer agreed access and documentation, then define maintenance and future work separately.
Ownership and ongoing support
A useful handover makes the software operable by its agreed owner.
- Record custom source and intellectual-property rights, pre-existing components, licenses and account ownership in the agreement.
- Deliver agreed repository access, configuration inventory, setup guidance, data/export arrangements and recovery notes.
- Separate defect correction, maintenance coverage and feature changes. Confirm who handles updates, backups, monitoring and incidents.
Remote collaboration with a usable review process
Butler is based in Detroit. We agree delivery language, working sessions, system access and decision owners for each engagement. A project serving another country also needs a scoped review of content, data handling, payments and support dependencies where relevant.
A clear scope.
An informed investment.
Estimate the work around the required behavior and dependencies rather than a generic application size.
- User journeys, roles, data complexity, integration contracts and the condition of existing source.
- Design and accessibility work, migration, acceptance depth and production requirements.
- Hosting, storage, third-party licenses and optional support are itemized separately. Review timing depends on access and decision availability.
Your first project
Implementation Assessment or Focused Integration
Where the requirements are uncertain, the first paid output is an application and interface brief: users, constraints, build-or-buy options, acceptance and a bounded delivery proposal. Where a connection is already defined, a Focused Integration produces that working increment, its checks and handover. A full product build is separately scoped.
Discuss the right starting pointBefore you commit
Should we build or buy?
Compare existing platforms against the actual workflow, permissions, integration needs and total operating effort. Custom software is justified by a useful gap, not by the existence of requirements that a standard tool already meets.
Who owns the source and accounts?
The agreement sets the rights to custom source, configuration and content and identifies licensed or pre-existing components. Specify repository access, hosting accounts and transfer obligations before work begins; ownership must not depend on an undocumented handover.
Can you improve an application we already use?
A scoped review can assess the repository, dependencies, tests, deployment and data model. We then agree a repair or increment that fits the existing system. Access and condition determine whether reuse is practical.
What happens after launch?
Agree defect handling, updates, backups, monitoring and incident responsibilities. A maintenance arrangement reserves defined work and coverage; a feature request changes scope. Hosting alone is not an ongoing engineering service.
Can a startup begin with a smaller phase?
Yes. Buy the decision or first release you need, then add work as the evidence supports it. Staged payments and selected reduced-upfront revenue-based arrangements are discussed individually; a revenue arrangement is not automatically suitable for an internal tool.
Review scope and payment optionsAdd capabilities when the application needs them
Choose where to start
Compare a decision-focused assessment with a defined integration or delivery phase. Agree what each phase produces before committing to a larger application.
Compare ways to start a software projectWhat should the software make possible?
Tell us who will use it, what they need to accomplish and where the current tools fall short. Bring an idea or an existing application; leave credentials and private customer records out of the inquiry.
Discuss your software project