Comparison

다 열리는 뷰어 vs KeyCorder

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

Head to head
About

다 열리는 뷰어

Features
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“다 열리는 뷰어” is a file viewer for opening and viewing different documents and files in one place, while making it easy to find and organize what you need. It supports PDF, HWP/HWPX, DOCX, EPUB, HTML, TXT, images, and various Office documents. Open files directly by selecting them in the Files app or from another app’s Share menu. ### Key Features • View PDF documents • View HWP/HWPX Hangul documents • View DOCX documents • View EPUB e-books • View Illustrator (.ai) files • View HTML/HTM documents • View TXT files • View image files • Open Office documents such as XLSX and PPTX supported by iOS system preview • Preview supported audio and video files • Search by file name • Filter and sort by file type • Save frequently viewed files as favorites • Organize files with tags • Save your reading position in PDFs and continue later • View file thumbnails • Reopen recent files • Share files and open them in other apps • Dark mode support Select a file in the Files app or from the Share menu to open it directly with “다 열리는 뷰어”. No login or registration is required. Selected files are displayed read-only on your device and are not uploaded to the developer’s servers. The app focuses on simple file viewing and organization.

About

KeyCorder

Features
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KeyCorder is a free Korean keyboard, redesigned from scratch. One key holds the plain, aspirated and tense consonants, so the whole layout fits in five columns — and the keys get bigger. Nothing you type leaves your device. ■ One key, three sounds · Tap → plain (ㅂ) · Slide → aspirated (ㅍ) · Hold → tense (ㅃ) Tap twice quickly and it picks the right one from context. ■ Same key twice? It works it out On layouts where one key carries several letters, a repeat tap is ambiguous: is ㄱㄱ the single letter ㅋ, or a final ㄱ followed by an initial ㄱ? Usually you have to break it up yourself with a slide or a pause. KeyCorder decides from a dictionary instead. · 5-key, 7-key, full QWERTY — picks between ㅋ and final+initial · Simple-vowel — decides between the tense ㄲ and two separate letters · Cheonjiin — type straight through even when a final and the next initial share a key (장마, 안녕), no slide needed If it read you wrong, one tap on the suggestion bar switches it. ■ Features · 5-key Korean input, repeat-tap auto-resolution tuned per layout · Word suggestions — next-word prediction, initial-consonant search, emoji hints · Emoji, symbols and Hanja conversion · Clipboard history with pinning · Press effects (ripple, bolt, snow, petal, ice) that react to touch · 16 themes, bundled fonts, your photo as keyboard background · Key size, font size, weight and border — all adjustable · Learned-word manager: review and delete what it learned · Typing stats with weekly speed graph · Split keyboard & one-handed mode · Number-only fields open a large number pad automatically · Layouts: 5-key, 7-key, full QWERTY, simple-vowel, Cheonjiin · Korean + English On first launch you pick a layout and a look (calm, vivid, neon, elegant); theme, font and press effect are set together. Reopen it anytime. ■ Privacy by default No data collection, no servers, no ads or trackers. The keyboard sends nothing you type anywhere, and learned data is even excluded from iCloud backup. Full Access is used only for clipboard history, haptic feedback, and sharing settings between the app and the keyboard. Clipboard history stays on-device, is excluded from iCloud backup, and can be disabled or cleared at any time from the keyboard panel. Every feature is free. Feedback: https://corderlabs.com/keycorder/feedback

Screenshots

다 열리는 뷰어4 screens
KeyCorder4 screens

Verdict

The call

The clearest difference is ads: KeyCorder at none against 다 열리는 뷰어's shown. KeyCorder also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

다 열리는 뷰어 ships an update every 3 days, KeyCorder every 2 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 4 level
다 열리는 뷰어 versus KeyCorder: the parameters behind the verdict, then further details
Parameter다 열리는 뷰어KeyCorder
PriceFreeFree
Update frequencyEvery 3 daysEvery 2 days — better
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size14 MB16 MB
Age rating4+4+
DeveloperGEUNHYEONG JUNGYongdae Park

In-app purchases

None

다 열리는 뷰어

No in-app purchases

None

KeyCorder

No in-app purchases

Questions

Is 다 열리는 뷰어 free?
다 열리는 뷰어 is free to download, with no in-app purchases.
Is KeyCorder free?
KeyCorder is free to download, with no in-app purchases.
Do 다 열리는 뷰어 or KeyCorder have ads?
다 열리는 뷰어 shows ads; KeyCorder does not.
Which is updated more often, 다 열리는 뷰어 or KeyCorder?
다 열리는 뷰어 ships an update every 3 days, and KeyCorder every 2 days. Most recently, 다 열리는 뷰어 was updated on October 29, 2026 and KeyCorder on October 24, 2026.

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