Comparison

Banana Viewer vs TwoUp Split Screen Dual Window

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

Head to head
About

Banana Viewer

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Banana is a fast, private PDF viewer and editor for iPhone and iPad. View, edit, mark up and organise your PDFs — all offline, all on your device. Nothing is uploaded. There is no account to make and no cloud to sign into. Banana works exactly the same with the network off. FREE FOREVER • PDF viewer — smooth scrolling, pinch to zoom, thumbnails and a page grid • Search inside a document, with highlighted results, and Go to Page • Rotate, reorder, delete and extract pages • Merge several PDFs into one, or split one into many • Compress a PDF down to a size you can actually email • Add page numbers, or copy a page out as an image • Sign documents — draw your signature, place it, save it for reuse • Notes — add timestamped notes to any document • Password protection — lock with open and owner passwords • Group share — select several PDFs and send them by AirDrop, Mail or Messages • Open from anywhere — Banana appears in the Open In menu across iOS • Undo and redo any change, from the buttons beside the back arrow • Revert to the original — discard every edit and go back to the file as you imported it • Export the original untouched, whatever you have done to your copy Signatures and notes are written into the PDF itself, so they open the same way in Preview, Acrobat or anything else. ON iPAD AS WELL • Split View with side-by-side PDF comparison • Highlight, underline and strike through text WHAT COSTS MONEY Four things. Everything above stays free. • Document Scanner — camera scanning with edge detection and multi-page capture, $0.99 • Fill Forms — fill in form fields and keep the result, $0.99 • Text to PDF — comes with the unlock • Version history — save a version by name and restore it later; comes with the unlock Open a document and all four are free to try for 30 days. After that, one $2.99 purchase unlocks all of them, forever. It is a Universal Purchase: buy it on your iPhone and it is already unlocked on your iPad and on the Mac app, and the other way round. Already bought the Document Scanner or Fill Forms? You pay only the difference to move up to the full unlock, and you keep what you bought. No subscriptions. Ever. PRIVACY • 100% offline — documents never leave your device • No analytics, no tracking, no cloud uploads • No account required 14 LANGUAGES English, Deutsch, Français, 简体中文, 日本語, Español, 한국어, Português (Portugal), Português (Brasil), Italiano, Nederlands, Türkçe, Polski, Русский Also available on Mac, with more tools, workspaces, and split view with PDF comparison. The unlock covers both.

About

TwoUp Split Screen Dual Window

Features
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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 — 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 — 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 — 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 — 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

Banana Viewer4 screens
TwoUp Split Screen Dual Window4 screens

Verdict

The call

The clearest difference is update cadence: TwoUp Split Screen Dual Window at weekly against Banana Viewer's every 5 weeks. Banana Viewer's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Banana Viewer sells 12 one-off in-app purchases and TwoUp Split Screen Dual Window sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Banana Viewer ships an update every 5 weeks, TwoUp Split Screen Dual Window weekly. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

Scorecard2 real differences · 4 level
Banana Viewer versus TwoUp Split Screen Dual Window: the parameters behind the verdict, then further details
ParameterBanana ViewerTwoUp Split Screen Dual Window
PriceFreeFree
Update frequencyEvery 5 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS17.0 — better18.0
Further details — not scored
Size4 MB4 MB
Age rating4+17+
DeveloperFrank PimentaMikalai Kuts

In-app purchases

12 purchases

Banana Viewer

One-time12
  • Upgrade to Everything$0.99
  • English2 variants$0.99
  • Filling Form Feature$0.99
Show 9 more
  • Upgrade to Everything$1.99
  • Crop and Flatten feature$1.99
  • Annotate Feature$1.99
  • Redact Feature$1.99
  • OCR feature$1.99
  • batch processing feature$1.99
  • Unlock Everything$2.99
  • Password protection feature$4.99
  • Full Version$4.99
2 purchases

TwoUp Split Screen Dual Window

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

Questions

Is Banana Viewer free?
Banana Viewer is free to download, with in-app purchases available.
Is TwoUp Split Screen Dual Window free?
TwoUp Split Screen Dual Window is free to download, with in-app purchases available.
Do Banana Viewer or TwoUp Split Screen Dual Window have ads?
Neither Banana Viewer nor TwoUp Split Screen Dual Window shows ads.
Which is updated more often, Banana Viewer or TwoUp Split Screen Dual Window?
Banana Viewer ships an update every 5 weeks, and TwoUp Split Screen Dual Window weekly. Most recently, Banana Viewer was updated on October 16, 2026 and TwoUp Split Screen Dual Window on October 15, 2026.

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