Turn a repeated website task into a clearer workflow.

What a custom tool can do

The simplest projects turn agreed inputs into a useful result. A calculator might estimate quantity, cost or time while showing the assumptions behind the answer. A structured quote form can collect the details needed to respond properly. A small dashboard can let authorised users view or update agreed records.

Other work may connect a website to Supabase, Stripe Checkout or an email provider. These integrations are not interchangeable add-ons. Each one needs decisions about data, permissions, success and failure states, account ownership and ongoing provider charges. The written scope records those decisions before development starts.

Who it suits

This service suits a business that already understands the manual process it wants to improve. You should be able to explain who uses the tool, what information goes in, what should happen and what a successful result looks like. A short example using real-world values is often more useful than a long list of feature names.

It is not necessary to arrive with a technical specification. Sitebirch can turn a clear business process into a scoped interface and set of rules. If the process changes every time, depends heavily on staff judgement or has not yet been tested manually, a smaller prototype may be the safer first step.

What is included

• A written definition of users, inputs, rules and outputs.
• A responsive interface for the agreed steps and states.
• Client-side validation and clear error messages where relevant.
• The calculation, form workflow or integration named in the quote.
• Testing with agreed examples, including expected failure cases.
• Basic handover notes for the finished workflow.
• The revision rounds and post-delivery support stated in the quote.

A small custom calculator starts from £195. Current guide prices include contact and quote forms from £125, transactional email from £225, Supabase integration from £345 and Stripe Checkout from £395. Dashboards and multi-step booking journeys require a larger separate scope.

What is not included

The starting price does not cover an unlimited web application, native mobile app, complex account system or every future workflow. Data migration, bulk data cleaning, advanced reporting, regulated compliance work, penetration testing and long-term monitoring are separate unless expressly included.

Provider costs also sit outside the development fee: payment transaction charges, database usage, email sending, SMS, hosting, domains and paid APIs belong to the relevant provider. Live payment activation, identity checks and account approval remain subject to that provider. Sitebirch does not store your payment-card details.

Scope, testing and timing

The first stage maps the smallest useful version of the tool. Together we define sample inputs, calculation rules, required records, permissions and the message shown when something fails. You approve the scope, fee and estimated timing before development. New fields, integrations or workflow branches after approval count as extra work.

A simple calculator or structured form is commonly estimated at 5–7 working days once requirements and content are ready. A database, payment or multi-step workflow may take 10–15 working days or longer depending on testing and third-party setup. No live integration is launched until the agreed test cases pass and the necessary accounts are ready.