Comparison

Multi Browser vs Duo

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Multi Browser

Browse up to four websites simultaneously on a single screen, eliminating the need to constantly switch tabs. This app is ideal for comparing products, multitasking between content, or monitoring live information without interruption.

Highlights
  • Display up to 4 websites at once
  • Resizable panes for custom layouts
  • Auto-reload timer for live content
  • Full-screen mode with address bar
  • Find in page functionality
  • Bookmarks and session restore
  • Tab presets
Features
Read full description

Tired of constantly switching tabs? Multi Browser shows up to 4 websites at the same time โ€” on one screen. Watch a video while you chat. Compare prices side by side. Keep an eye on live scores, feeds and dashboards. No more tapping back and forth. UP TO 4 SITES, ONE SCREEN Split your screen into 2, 3 or 4 live web views, and drag to resize each pane exactly how you like. BUILT FOR MULTITASKING - Compare products and prices side by side - Watch and browse at the same time - Monitor live scores, streams and feeds - Research across several sources at once POWER FEATURES - Auto-reload timer (5s-3min), per pane or all panes at once - Tap any pane to go full screen, with an address bar and desktop-site switch - Find in page - Bookmarks, tab presets and automatic session restore - Drag to rearrange your tabs Free. Turn one screen into four. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://fillapps.com/privacy/

About

Duo

Features
Read full description

TwoUp puts two things on one iPhone screen at the same time: a web page, a PDF and a plain-text note, in any combination you need. Read a PDF above and write your notes below. Keep a reference page open beside the document you are working through. Both panes stay live โ€” scroll one and the other keeps its place. SAVE THE PAIR A pair of panes is a workspace. Name it, and it reopens exactly as you left it: the same document, the same page, the same note text, the same divider position. MADE FOR READING Drag the divider to give either pane more room, or send one pane full screen and back. Turn the phone sideways and a PDF opens as a two-page spread, like a book, with your note still beside it. YOUR OWN SITES โ€” WITH PRO Save the pages you keep coming back to, with their titles and icons, and open one into a pane without typing an address. IT ALL STAYS ON YOUR PHONE No account, no sign-in, and no server of ours. Your notes, your documents and your saved sites never leave the device โ€” there is nowhere for them to go. The app asks for no permissions at all: no camera, no photos, no contacts, no location. The app sends anonymous usage statistics so we can see which screens people reach and where they get stuck. None of your content is ever included โ€” not your notes, not the addresses you open. You can switch it off in Menu > App > Share usage data. TwoUp Pro adds two things: keeping more than one saved workspace, and saving your own sites as shortcuts. Terms of Use: https://nikolaykutsbr.github.io/twoup-support/terms.html Privacy Policy: https://nikolaykutsbr.github.io/twoup-support/privacy-policy.html

Screenshots

Multi Browser4 screens
Duo4 screens

Verdict

The call

The clearest difference is in-app purchases: Multi Browser at none against Duo's 2. Multi Browser also leads on device support (3 vs 1) and iOS requirement (15.6 vs 18.0). Duo's advantage is ads (none vs shown) and update cadence (every 2 days vs every 5 days). On price there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Duo sells 2 in-app purchases, starting at $6.99 per 7 days. Multi Browser asks for nothing beyond the download.

UpkeepUpdate frequency

Multi Browser ships an update every 5 days, Duo every 2 days. The most recent releases landed on September 21, 2026 and September 30, 2026 respectively.

Scorecard5 real differences ยท 3 level
Multi Browser versus Duo: the parameters behind the verdict, then further details
ParameterMulti BrowserDuo
PriceFreeFree
Positive reviews0.0% of reviewsโ€”
Update frequencyEvery 5 daysEvery 2 days โ€” better
AdsYesNo โ€” better
In-app purchasesNo โ€” betterYes
MonetizationFree with in-app purchasesโ€”
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS15.6 โ€” better18.0
Further details โ€” not scored
Size42 MB4 MB
Age rating17+17+
DeveloperSeiya.kMikalai Kuts

In-app purchases

None

Multi Browser

No in-app purchases

2 purchases

Duo

Subscriptions2
  • TwoUp Plus Week3 Days trial$6.997 Days
  • TwoUP Plus Year$59.991 Year

Questions

Is Multi Browser free?
Multi Browser is free to download, with no in-app purchases.
Is Duo free?
Duo is free to download, with in-app purchases available.
Do Multi Browser or Duo have ads?
Multi Browser shows ads; Duo does not.
Which is updated more often, Multi Browser or Duo?
Multi Browser ships an update every 5 days, and Duo every 2 days. Most recently, Multi Browser was updated on September 21, 2026 and Duo on September 30, 2026.

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