Improve your existing website or application with one focused custom feature. I review the current setup and agree on behaviour and acceptance criteria before development.

Entry-package examples One extra form field with matching validation and display, a simple configurable calculation rule, or a small frontend interaction. These are examples to scope together; not every requested feature fits the entry price.

Deliverables One agreed small feature, relevant source/code changes, a brief installation or change note, functional checks against the agreed criteria and one small revision round. Development uses a staging copy where available. Typical delivery: up to 3 business days after scope and access are confirmed.

Requirements Your existing project or repository, runtime/platform versions, desired behaviour, example inputs/results and secure access. Keep passwords and API keys out of public messages.

Scope and pricing Starting at $100. A new standalone application, full commercial plugin, substantial API integration, authentication system, payment processing, major compatibility debugging and ongoing support are outside this small-feature package. Larger work is quoted separately. Licenses, API usage and hosting are additional. Ownership and third-party license requirements are clarified before work begins.

Example work TransferCalc demonstrates configurable fare logic, Google integrations, bilingual interfaces and enquiry management. Its full development is a separate project; this service does not recreate TransferCalc for $100. The ready-made product is offered separately.

Deutsch Eine kleine, klar abgegrenzte Erweiterung einer bestehenden Webseite oder Anwendung. Umfang und Abnahmekriterien werden vorab vereinbart. Eine kleine Korrekturrunde; größere Softwareprojekte nach Angebot.