VITON13 / Focused service

Turn your web app into an installable PWA: offline screens, an install prompt and safe updates

PWA development in 3–5 working days, from $53 AI-assisted / $73 human-led: we add a manifest and an icon set, a service worker that keeps up to 10 key screens working without a connection, an offline page, an install prompt and an update notice to your existing web app, and test all of it on Android and iPhone. The price includes 1 revision round on the deliverables.

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In short

What does Progressive web app include?

Progressive web app starts at USD 53 with AI-assisted production or USD 73 with a human-led route; typical delivery is 3–5 working days.

Includes 1 revision round on the deliverables; VITON13 confirms the scope in writing.

Starting price$53AI-assisted$73Human-led
Delivery window3–5 working days1 revision round on the deliverables
Primary deliverable1 web app manifest with an icon set in 6 sizes, including a maskable icon

What you get and on what terms

Progressive web app

AI-assistedfrom $53

Human-ledfrom $73

Timeline
3–5 working days
Revisions
1 round on the deliverables
Included
only the deliverables listed in the agreed package
Not included
external costs and work outside the agreed scope
From you
brief, current materials and any access needed for this scope
You receive
listed deliverables plus a written completion note
Order this service

Prices in USD; other currencies are approximate. Scope, revisions and dates are written into your estimate.

Who it is for

A team with a working web app or customer portal whose users come back on their phones and would open it from the home screen, if it installed and loaded without waiting.

What is included

  • 1 web app manifest with an icon set in 6 sizes, including a maskable icon
  • A service worker that caches up to 10 key screens for use without a connection
  • 1 offline page that says what still works and what needs a connection
  • 2 prompts: install the app, and reload for a new version
  • 2 platforms tested: Android with Chrome and iPhone with Safari

Not included

  • Building the web app itself (see the web app MVP)
  • Publishing in the App Store or Google Play
  • Push notifications and offline editing with sync (estimated separately)
  • Redesigning screens for mobile

How the work runs

  1. 01

    We check the app's routes, data and sign-in and choose up to 10 screens worth keeping offline.

  2. 02

    We add the manifest, the icons and the service worker, with a caching rule for each kind of content.

  3. 03

    We build the install prompt, the update notice and the offline page, and test them on Android and iPhone.

  4. 04

    You try it on your own phones; after the revision round you receive the code and a note on releasing updates.

Example

Pilot / new service — first client cases in progressHow pilots work

No PWA case is published yet. The first client cases are in progress.

Related guides

All guides
Websites and development

How much does a mobile app cost in 2026, and what makes the price move?

An agency-built mobile app usually costs tens of thousands of dollars: Velvetech’s 2026 guide puts simple apps at $40,000–$100,000 and complex ones at $200,000–$400,000…

Read the guide
YOUR NEXT PROJECT · DEVELOPMENT FROM $13

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The HYPERSOLID home page in a desktop browser frame with the phone version beside it: a glass tesseract with rainbow-sheened edges floats in teal haze among particles above the headline “We build worlds you can open in a browser.”, under the name HYPERSOLID in large white type and the line “Solid ideas in more than three dimensions.”
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Concept site · WebGL · English · 2026HYPERSOLID

Hello! Tell us what you need: a website, a logo, ads, video or AI. We reply here and by email.

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Scope and pricingYou can choose later
01 / Scope & estimate

Progressive web app

How we work
Starting budgetFrom $53

Deliver an installable mobile web experience without starting with two native codebases.

Inside this scope
  • 1 web app manifest with an icon set in 6 sizes, including a maskable icon
  • A service worker that caches up to 10 key screens for use without a connection
  • 1 offline page that says what still works and what needs a connection
  • 2 prompts: install the app, and reload for a new version
  • 2 platforms tested: Android with Chrome and iPhone with Safari
  • Timeline: 3–5 working days
  • Revisions: 1 round on the deliverables
  • Included: only the deliverables listed in the agreed package
  • Excluded: external costs and work outside the agreed scope
  • Input required: brief, current materials and any access needed for this scope
  • Handoff: listed deliverables plus a written completion note

A starting estimate for the selected scope. We confirm deliverables, timing and the final price in writing before work starts. External costs are separate.

What you can count on
  • Written estimate within 1 working day, sent to the contact you choose.
  • Scope in writing before work starts: deliverables, revision rounds and what is not included.
  • We work in four languages and show prices in your currency.
  • No account needed. Attachments are encrypted in this browser before upload.
Send a detailed brief or attachments

Request aboutProgressive web app

The goal, what exists now and any deadline. A few sentences are enough.
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We use these details only to answer this request.

Development from $13

AI reduces repetitive production time. VITON13 passes that efficiency back to the client while human review remains part of every delivery.

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Editorial cover: Progressive web app
FAQ / Buyer questions

Questions people ask before buying

01Will the app appear in the App Store?+

No. A PWA installs from the browser to the home screen. If a store listing matters to your buyers, a native or wrapped app is a separate project.

02Does it work on iPhone?+

Yes, installed from Safari with “Add to Home Screen”. Some features behave differently on iOS, so we test on an iPhone as well as on Android and tell you what differs.

03What works without a connection?+

The screens we cache, up to 10, open offline with the data they last showed. Actions that need the server, such as paying or sending a form, wait for the connection and say so.

04How do users get updates?+

When a new version is released, the app shows a notice and reloads when the user taps it, so nobody is left on an old version with broken data.

05Do we need to rebuild our site?+

No, if it already works well on phones and runs over HTTPS. If it does not, we tell you before starting what has to change first.

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