Comparison

King Sejong Keyboard vs keyPlex

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

Head to head
About

King Sejong Keyboard

Experience a faster, more accurate typing experience with a customizable keyboard. Design your layout, choose colors and fonts, and utilize quick-type features for increased productivity. It prioritizes user privacy and offers a smart typing solution.

Highlights
  • Shift-less keyboard layout
  • Customizable key layouts and screen settings
  • Personalized colors and fonts
  • QuickType settings for rapid access
  • Save favorite texts and images
  • Multi-language support with Korean layouts
Read full description

King Sejong Keyboard never collects your personal or sensitive information. Experience a new, faster way to type on your mobile keyboard without the need for the shift key with the King Sejong Keyboard! It offers professional-grade typing, accurate input, fast typing, and the freedom to design according to your personality. King Sejong Keyboard offers a variety of keyboard arrangements, customizable key layouts, screen layout settings, favorite images, favorite texts, and more to customize your typing experience for different environments and personalities. Common problems with traditional mobile keyboards include typing errors and double entries, slow typing, keyboard freezes, and some mobile keyboards auto-correct typing errors and convert them into unintended words. These issues often slowed down productivity and caused stress when typing. However, King Sejong Keyboard has researched and reflected the latest technologies, trends, and cognitive engineering techniques to ensure accurate input, and it can increase productivity by providing a customized experience with fast input speed and various functions. In addition, it can be used as a keyboard that meets the user's preferences through various designs and optional features. Experience a smart typing experience in the age of AI with King Sejong Keyboard. [Key Features] - King Sejong Keyboard Layout King Sejong Keyboard is a shift-less keyboard. It provides a more intuitive and faster keyboard layout and a variety of keyboard layouts that can be easily used in various cognitive structures and environments, providing users with a new, future-proof keyboard. - Language settings You can set the primary and secondary language to customize your experience. We offer 5 different keyboard layouts in Korean, so you can choose the one that suits your needs. - Screen layout - You can set the position of the primary language on the right or left when using landscape mode, making it convenient for both right and left-handed users. - Colors and fonts The keyboard color offers eight default colors, and you can customize the background color of the keyboard and button colors to suit your mood. You can also specify a bold font weight to give your keyboard a sharper look. - QuickType settings The quick keyboard setting function provides a convenient patented technology that allows you to easily access frequently used characters through the left and right sliding function by adding numbers + desired symbols, emoji, and diacritic in the place of the default number for quick typing. - Favorite text and images - This is an innovative feature that allows you to pre-register frequently used addresses, account numbers, phone numbers, and images to enter sentences with just one touch when typing. This is a very useful feature that is perfect for a lifestyle that involves various deliveries, transfers, and contact exchanges these days. [Official website] http://www.kingsejong.net

About

keyPlex

Features
Read full description

keyPlex is your personal password vault on iPhone. All data stays encrypted on your device – no third-party servers, no tracking. Six smart categories – not every password is the same. keyPlex offers optimized fields for web logins, email accounts, banking, credit cards, WiFi networks and other credentials. Card scanning – Capture bank and credit cards using your camera. Card number, expiry date and cardholder name are recognized automatically. Password groups – Organize your entries into custom groups like Personal, Work or Family for even better overview. Encrypted backup – Save all data as an encrypted file. Only recoverable with your backup password. Double protection – Unlock the app with Face ID, Touch ID or your own app passcode. You decide. Your data, your control – iCloud Sync is optional. Export your data anytime as CSV. No vendor lock-in. Custom categories – Create your own categories with individual icons and colors. Made in Germany – Built with a focus on privacy and usability. Available in German, English and Spanish. FREE: - Up to 5 entries - All 6 standard categories - Face ID & app passcode - Password generator - CSV export PREMIUM: - Unlimited entries - iCloud Sync across devices - Custom categories - Card scanner - Encrypted backup - Password groups Choose your plan: Yearly subscription (4.99 €/year) or one-time Lifetime (17.99 €). Privacy Policy: https://www.euplex.com/datenschutz.html?lang=en Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

King Sejong Keyboard4 screens
keyPlex4 screens

Verdict

The call

The clearest difference is price: keyPlex at Free against King Sejong Keyboard's $27.00. King Sejong Keyboard's advantage is in-app purchases (none vs 2) and iOS requirement (15.6 vs 17.6). On update cadence, ads and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

keyPlex is free to download; King Sejong Keyboard costs $27.00 up front. keyPlex sells 2 in-app purchases, starting at $3.99 per year. King Sejong Keyboard asks for nothing beyond the download.

UpkeepUpdate frequency

King Sejong Keyboard ships an update fortnightly, keyPlex every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard3 real differences Β· 5 level
King Sejong Keyboard versus keyPlex: the parameters behind the verdict, then further details
ParameterKing Sejong KeyboardkeyPlex
Price$27.00Free β€” better
Positive reviews100.0% of reviewsβ€”
Update frequencyFortnightly β€” betterEvery 3 weeks
AdsNoNo
In-app purchasesNo β€” betterYes
MonetizationPaidβ€”
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 β€” better17.6
Further details β€” not scored
Size67 MB4 MB
Age rating4+4+
DeveloperTeraBaTek Co., LtdEugen Gabriel

In-app purchases

None

King Sejong Keyboard

No in-app purchases

2 purchases

keyPlex

Subscriptions1
  • keyPlex Premium$3.991 Year
One-time1
  • keyPlex Premium (Lifetime)$14.99

Questions

Is King Sejong Keyboard free?
King Sejong Keyboard costs $27.00, with no in-app purchases.
Is keyPlex free?
keyPlex is free to download, with in-app purchases available.
Do King Sejong Keyboard or keyPlex have ads?
Neither King Sejong Keyboard nor keyPlex shows ads.
Which is updated more often, King Sejong Keyboard or keyPlex?
King Sejong Keyboard ships an update fortnightly, and keyPlex every 3 weeks. Most recently, King Sejong Keyboard was updated on October 24, 2026 and keyPlex on October 25, 2026.

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