Daphnis Labs

Progressive Web App Development

Installable web applications with deliberate caching, offline behavior and update handling, shaped around the browsers your users rely on.

Service request
Offline
DraftSaved locally
SubmissionPending
Add to send queue
Device cache
Server receipt
PWA offline queue illustration

Tools & technologies

  • Service workers
  • Web App Manifest
  • IndexedDB
  • Responsive web UI

Send a form after reconnecting

Capability Example

A user submits a service form while offline.

Illustrative data. Nothing is sent to an external system.

Example workspace1 / 3

Cached application

  • App shell: available
  • Record: locally saved
  • Connection: offline

Store the payload locally and label it as unsent.

Follow the record through the next step

Browser applications that handle lost connections.

Offline fieldwork

Keep selected forms and records available during interrupted connectivity.

Repeat-use portals

Offer an installable entry point for tasks people return to frequently.

Mobile web upgrades

Add resilient loading and installation to an existing responsive application.

An installation and update policy, not just a manifest.

  1. App manifest and install flow
  2. Cache and update strategy
  3. Offline conflict handling
  4. Browser capability test matrix
  • App manifest and install flow
  • Cache and update strategy
  • Offline conflict handling
  • Browser capability test matrix

Define which actions can work offline.

Offline boundary

Specify which records and actions work offline; do not promise the whole product will.

Browser differences

Installation, notifications and background behavior require target-browser checks.

Questions before we start.

Is a responsive website already a PWA?

No. Responsive layout adapts the interface; a PWA adds capabilities such as installation and a defined caching/offline strategy.

Can updates leave users on an old version?

They can. We design cache versioning and update prompts so an open session is not silently broken.

Bring your starting point.

Share the browser/device mix and the exact tasks that must work without a connection.

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