Comparison

락키보드 vs SFFE

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

Head to head
About

락키보드

Features
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Lockey (Password-generated keyboard) This is a keyboard customized for iOS. Instant keyboard and encryption function are added to the regular keyboard that you can use all the time. Security has been enhanced for the transmission of plain text and images. 1. Supports various Korean keyboards.  -QWERTY, assorted, Cheonjiin, Narrat, Vega keyboard support.  -Korean, English, and special symbols are supported.  -Long click special symbol input function.  -The keyboard in landscape mode is extended to suit the situation. 2. You can select the keyboard touch effect and theme.  -When you touch, you can select the balloon effect or the over effect.  -Keyboard color theme selection  -Select key size (in preparation) 3. You can switch between Korean and English keyboards by swiping the keyboard left or right. 4. Instant web search with the entered string  -After inputting the string you want to search, press the search button to instantly view the web search results with the built-in browser.  -You can easily get various search results through Google, Naver, Daum, and YouTube.  -The searched site address is immediately delivered to the app in use through the share button.  -Full browser functionality. 5. Encryption function  -Encrypted text can be encrypted using the AES encryption technology-based encryption method.  -Compatible with passwords of other platform users' lockkey users.  -Special password can be diversified through private key.  -By using Link Plus, passwords can be transmitted with links.  -You can encrypt and send the album image or the captured image. 6. Product and Glossary  -Super Pack: A product that provides the function to encrypt the long text, image, and link plus functions  -Ultra Pack: Private key setting function + Super Pack  -Link Plus: Lists the latest contents of over 50 selected blogs and provides them as links  -Private key: A function that allows the user to directly specify the key value used when encrypting text to separate the encryption / decryption user environment. Encrypted sentences are normally decrypted only if the same private key is set. * In-app purchase products (Super Pack, Ultra Pack) retain their functions for one year from the date of purchase.

About

SFFE

Customize website fonts in Safari to match your personal style. Import various font file types and apply them to specific sites or by language. Preview changes before applying them for a personalized reading experience.

Highlights
  • Import TTF, OTF, WOFF fonts
  • Apply font groups by website
  • Language-based font settings
  • Preview fonts before applying
  • Light and Dark mode support
Features
Read full description

Make Safari easier to read with your own fonts. SFFE lets you change website fonts in Safari to match your personal style. Register fonts and create groups in the app, then quickly apply them per site in Safari. Key Features - Import TTF, OTF, WOFF, and WOFF2 fonts - Apply font groups by website - Language-based font settings (Korean, English, Japanese, Chinese Simplified/Traditional) - Preview before applying (numbers/symbols, your language first, multilingual paragraph samples) - Light and Dark mode support How to Use - Enable SFFE in Settings > Safari > Extensions. - Open Safari and tap the puzzle icon next to the address bar. - Select the font group you want for each site. Notes - Large font files may take longer on first load. - Support: sffe@blueat.me

Screenshots

락키보드4 screens
SFFE4 screens

Verdict

The call

The clearest difference is price: 락키보드 at Free against SFFE's $1.99. 락키보드 also leads on update cadence (every 9 days vs every 3 weeks) and iOS requirement (15.6 vs 18.4). SFFE's advantage is in-app purchases (none vs 2). On ads 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

락키보드 is free to download; SFFE costs $1.99 up front. 락키보드 sells 2 one-off in-app purchases. SFFE asks for nothing beyond the download.

UpkeepUpdate frequency

락키보드 ships an update every 9 days, SFFE every 3 weeks. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
락키보드 versus SFFE: the parameters behind the verdict, then further details
Parameter락키보드SFFE
PriceFree — better$1.99
Rating—4.0 (4 ratings) — better
Positive reviews—76.2% of reviews
Number of ratings—4 — better
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
Monetization—Paid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.4
Further details — not scored
Size24 MB6 MB
Age rating4+4+
DeveloperUI CHAN HONGBLUEAT

In-app purchases

2 purchases

락키보드

One-time2
  • SuperPack(Text+Image+LinkPlus)$0.99
  • Ultra Pack (Super+Private key)$8.99
None

SFFE

No in-app purchases

Questions

Is 락키보드 free?
락키보드 is free to download, with in-app purchases available.
Is SFFE free?
SFFE costs $1.99, with no in-app purchases.
Do 락키보드 or SFFE have ads?
Neither 락키보드 nor SFFE shows ads.
Which is updated more often, 락키보드 or SFFE?
락키보드 ships an update every 9 days, and SFFE every 3 weeks. Most recently, 락키보드 was updated on November 3, 2026 and SFFE on November 3, 2026.

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