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Progressify > Settings > Installation Browsers will not install your app on their own. They wait for the site to ask. This tab controls every way Progressify can ask, from an unobtrusive banner to a shareable QR code.
Enable one overlay, not all of them. Each one is a separate interruption, and a visitor who meets three install prompts in one session is more likely to leave than to install.

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Overlays

Overlays appear automatically on the front end. Each has its own message, which you edit with the Edit link next to it. The Feed and Blog overlays reach people already reading, which is a better moment to ask than a first page view. The Checkout overlay is worth enabling on stores, since order tracking is a concrete reason to install.

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Shared settings

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string
default:"Install Web App"
The title on every overlay and the label on the install button. Keep it short and concrete.
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number
default:"2"
Days to wait before showing an overlay again after a visitor dismisses it. Raising this is the single cheapest way to reduce complaints about prompts.

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Other ways to prompt

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Installation page

A dedicated page styled like an app store listing, with your icon, name, description, and screenshots. Progressify gives you its URL on this tab, ready to copy. Use it as a link target from email, social posts, or a “Get the app” item in your menu. It is also the only prompt that works for iOS visitors, because it can show them the Share > Add to Home Screen steps that Safari requires.

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Installation button

A button you can place anywhere with a shortcode.
It triggers the browser install prompt when selected, and uses the Text value above as its label. It appears wherever shortcodes are processed, so posts, pages, and text widgets all work.
On a browser that cannot install, the button has nothing to trigger. Place it somewhere its absence does not break your layout.

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Installation URL

Your homepage with a parameter that fires the install prompt as soon as the visitor arrives. Copy it from this tab and use it in campaigns where you know the person is ready to install.

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Installation QR code

A QR code pointing at the same URL. Copy it, or use Download Image to save a PNG. This is the practical way to move someone from desktop or print to their phone, so it belongs on receipts, packaging, table cards, and event signage.

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Why a prompt might not appear

Browsers suppress install prompts once the app is installed. Uninstall it, or test in a fresh profile.
The Timeout setting is suppressing it. Clear site data to test again.
No service worker means no install prompt. See installation requirements.
An app name and an icon of at least 512 by 512 pixels are required. Check Application > Manifest in developer tools.
Safari does not implement the install prompt event. iOS users have to use Share > Add to Home Screen, which your installation page can walk them through.