Wearable software & integration

Define the software you are actually buying

Choose the software route before requesting a build: an existing companion app, a branded version, integration into your own app, a new application, or standalone software without a device connection. For device integration, provide the protocol or SDK documentation, supported model/firmware versions and evidence that the required interfaces can be used. For standalone work, describe the users, roles, key workflows, existing APIs and acceptance examples. Mark missing interfaces or decisions for discovery rather than assuming they are available.

Separate firmware, mobile app, backend/API and third-party service responsibilities in the scope. For each interface, specify inputs, outputs, versions, error behavior and who can change it. Distinguish work on customer-provided components from newly commissioned development, and identify who supplies licenses, developer accounts and hosting. Access to an app or a demonstration does not automatically provide raw device data, reusable SDK rights or ownership of all underlying code.

Build an understandable data journey

Define a traceable data journey from the device or source system to the app and any backend. Record the source of truth, timestamps, units, timezone rules, missing-data states and permitted data destinations. A missing value should not silently become zero, and a cached record should not appear to be live. Requested data access, export, deletion and retention behavior should be scoped explicitly; these requirements are not evidence that every catalog device exposes the same data.

Agree a test matrix for supported device/firmware, phone/OS and API versions where applicable. Device projects should cover pairing, denied permissions, disconnection, synchronization, replacement and updates. Standalone software should cover the agreed user roles, core workflows, invalid inputs and integration failures. For both, define test data, expected results, how defects are recorded and who approves acceptance; a working demo is not a substitute for the agreed release tests.

Plan release and maintenance before launch

List acceptance and handover items in the agreement: versioned builds, interface documentation, test results, deployment instructions, account access and source code only where those items are included. Define who signs releases and handles store submission or hosting, with third-party review outside the development team's control. Maintenance should distinguish defect correction, dependency or OS updates, monitoring and new features, including the covered period and any separately quoted work; none is automatically unlimited.

For a useful first inquiry, send the software route, required screens or workflows, integrations, available documentation, supported languages and target platforms. State who owns the existing systems and accounts, the desired handover and any target launch window. Request separate estimates for discovery, implementation, integration/testing and ongoing services. Unresolved interfaces, changed requirements and external approvals can affect the scope and schedule, so confirm assumptions before committing to a full build.

Before we start