The one step browser that once you try you can't let go of, made in Japan!
【3 advantages】
★ Gestures adjusted by the millimeter for speed and precision
★ Tabs with lightning fast "Open" "Close" "Switch"
★ Customization to cut your daily browsing into a third
【Characteristic functions】
・ Gestures
Tab switching, refreshing, displaying bookmarks, full-screen, all in 1 step.
・ Hold And Go
Open pages one after another by holding down on links.
・ Custom button / Custom panel
In the freely customizable User Interface, you can arrange your desired functions, settings, bookmarks(bookmarklets too) where you can find it in just 1 step.
・ Autofill forms
(※ From top bar long press menu)
・ Offline viewing
Open tab content is automatically stored so that even after you close the app you can instantly restore data. (※ Disabled by default)
・ Automatically unloading old tabs
Save memory and stable tabs by limiting tab loading
・ Scroll grip
Quickly scroll down to the area of the page you want to view by touching the scroll bar.
・ Tab flicking
Flick tabs downwards to close, up to manage groups, and up and then right to open.
・ View mode
When opening specified pages and sites, you can have them automatically switch user agent and open in another app. (※ From top bar long press menu)
・ Extensions
Layout of pages can be changed, and special functions can be added using extensions. Download from the Extensions Gallery ( http://extensions.fenrir-inc.com/ ). Installing extensions can be completed by simply tapping the install button.
・ Fenrir Pass
This is a free cloud service that can be used to automatically sync bookmarks with Sleipnir on Windows, Mac, iPhone and Windows Phone, and also use a number of Web services.
Supported services: Twitter / Facebook / Google+ / LinkedIn / Tumblr / Flickr / Readability / Instapaper / Pocket / Dropbox / Evernote / SkyDrive / Google Reader
【Other functions】
・ Ad-block
・ Optimized design for smartphone and tablet devices
・ Customize the UI to what you like
・ Protect tabs by double tapping
・ tab groups to manage tabs
・ Various site search engines are available
・ "Usual Sites" for quickly accessing your favorite sites
・ Download and manage files
・ Full-screen mode
・ Sort bookmarks
・ bookmarks editing mode
・ Manage FenrirFS bookmarks with labels
・ Backup tabs, bookmarks, settings
・ Close application by holding down back key
・ Open with other browser (※ From top bar long press menu)
・ Search in pages (※ From top bar long press menu)
・ Copy title, URL (※ From top bar long press menu)
・ Open one level above URL (※ From top bar long press menu)
【About Sleipnir Mobile】
Sleipnir Mobile for Android is the one step browser that once you try you can't let go of, made in Japan! It features gestures adjusted by the millimeter for speed and precision, tabs with lightning fast "Open" "Close" "Switch", and customization to cut your daily browsing into a third. You can use it on your smartphone or tablet device.
・ Product page: http://www.fenrir-inc.com/android/apps/sleipnir-mobile.html (Kindle Fire HD version from here)
Latest Version
3.9.0Uploaded by
Alex Rautu
Requires Android
Android 4.0.3+
Category
Free Communication AppContent Rating
Everyone
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Flag as inappropriateLast updated on Oct 15, 2026
Version 3.9.0
・Improved to display the current domain and how to exit when switching to full-screen mode.
・Minor bug fixes and stability improvements.
[Acknowledgments]
We received a report from security researcher Fanda Dwi Aprilianto regarding a UI Spoofing vulnerability in the full-screen display feature.
We would like to thank Fanda for his significant contribution and responsible disclosure.
