Apps & experience D14
At-home service booking mobile app
At-home service booking mobile app
Supplied product screens · sample data
Mobile apps built around your users
Bring accounts, bookings, communities and chat into a coherent mobile experience
Apps & experience D14At-home service booking mobile app
IMPLEMENTATION SCOPE
Apps built for devices and connectivity
Choose native or cross-platform implementation around device and release requirements. Design local persistence, reconnection, session lifetime and push together.
- What we build
- App screens · device integration · APIs · release and operations
- What we validate
- Denied permissions, lost connectivity, sync conflicts and target devices
IN YOUR EVERYDAY WORKA smaller screen.
A smaller screen.
A clearer next action.
Before listing features, we define the inputs, decisions and next actions in a real working situation.
An illustrative scenario. Specific processing rules are agreed for the project.
A customer changes a booking date.
- Input
- Current booking · selected slot
- Review
- Availability and change rules
NEXT ACTION
Show confirmation and the updated booking
When this service helps
When customers return to a service frequently on their phones
- 1
Map the core journey
- 2
Connect the app, backend and notifications
- 3
Test on devices and prepare release
What the project delivers
- Apps for agreed iOS and Android targets
- Backend and authentication integration
- Test results and release handover
Specific features, integrations and operating support are agreed in the project proposal
Related work
See the scope, role and supplied interfaces for each project
Technical design and acceptance criteria
Details for technical reviewers. Architecture and acceptance criteria are agreed for the actual environment and project scope.
- Native / Cross-platform
- SQLite
- Optimistic concurrency
- Keychain / Keystore
Processing flow and exceptions
The interface reads local state while mutations enter a queue with operation IDs. After reconnection, the client checks server versions, applies acknowledged writes, and handles conflicts before overwriting data.
Architecture summary
- Offline mutation — Operation ID, local outbox, server version
- Platform permission — Permission-specific denial and revocation paths
- Version compatibility — Supported clients and API deprecation policy
02Acceptance criteria
Implementation and acceptance criteria
Concrete design decisions and acceptance scenarios to agree for the project.
Offline mutation
ImplementationOperation ID, local outbox, server version
ValidationProcess death, reconnect, replay, and edit conflicts
Platform permission
ImplementationPermission-specific denial and revocation paths
ValidationRevoke camera, BLE, or notification permission mid-flow
Version compatibility
ImplementationSupported clients and API deprecation policy
ValidationAn older app connects to the updated backend
Technology choices and acceptance criteria depend on discovery, integrations, and agreed scope. We define reproducible acceptance scenarios and handover evidence for the operating environment.
03Implementation details
Engineering decisions
in detail
From visible features to failure conditions,
we work through the decisions before launch.
Device requirements drive framework selection
Compare Flutter or React Native with Swift and Kotlin against actual platform requirements, not just code reuse. Review APIs and permission lifetimes for BLE, camera, background work, push, and biometrics. Isolate native bridges from interface logic and validate performance, battery behavior, and denied permissions on the target device set.
Offline writes require a synchronization protocol
Use a local store such as SQLite as the interface read path. Attach an operation ID, record version, and retry state to each mutation. The server detects replay and uses optimistic concurrency to expose conflicting edits. Choose merge, server-authoritative, or user-review behavior by business rule; reconnecting must not silently overwrite a newer record.
Tie authentication, push, and deep links to account lifetime
Keep tokens in platform-backed secure storage and define revocation on sign-out, expiration, and device changes. Model push tokens separately from user identity and device registration. Recheck authentication and resource permissions when a deep link opens a screen. Restrict diagnostic fields so passwords, access tokens, and personal data do not enter logs.
Design for overlapping client versions
Store review and user adoption create a period with multiple live client versions. Define additive API changes, deprecation, and minimum supported versions. Plan local migrations, feature flags, staged rollout, and an emergency disable path. Separate crash, network, and synchronization signals, and test older supported clients against the new backend.
04Handover
Detailed deliverables
- Supported platforms and devices, with core user journeys
- App, integration APIs, scoped admin tools, and synchronization rules
- Device test records and release and update handover
05Before implementation
Questions before implementation
- Customer-facing, internal, or field-operation use
- Work that must continue offline and data to retain locally
- Required devices, OS versions, SDKs, and store-account ownership
How your project moves forward
Discover
Understand your goals, workflows, and operating environment.
Define
Define features, priorities, and integration requirements.
Build
Build the agreed scope and review progress together.
Launch & Operate
Prepare testing, deployment, and operational handover.
Let’s discuss your project
Tell us what you want to build or improve
Our team will review your request and reply by email