SFFE Downloads & RevenueSFFE · App Store
SFFE is #29 in Productivity Paid in South Korea and charting in 1 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperBLUEAT
CategoryProductivity
Price3,300 KRW
Released
Rating★ 3.6 (149)
Version3.3
Age rating4+
First seen by us
25 Sep 2026
25 Sep 2026Installs (est.)10k+ worldwide
📈Entered the top 100📈Charting in a new country🆕First spotted by AppInsider📦Version 3.3🆕Released on the App Store
Full timeline · 8 events
- 📈SFFE entered the top 100Top Paid · Productivity · JP
- 📈SFFE charting in a new countryJapan
- 📈SFFE new best rank in the overall chart: #94Top Paid · All Apps · KR
- 📈SFFE entered the top 100Top Paid · All Apps · KR
- 📈SFFE new best rank in the overall chart: #106Top Paid · All Apps · KR
- 🆕SFFE first spotted by AppInsider#10 in Top Paid · Productivity · South Korea
- 📦SFFE version 3.3Improved font application and update reliability in Safari.
- More reliable preservation of saved fonts, groups, and site settings during updates.
- Improved font application in new tabs and pages that are already open.
- Font group changes and site/global switches now update pages without reloading.
- More consistent language and font-weight mappings and previews.
- Improved large font imports, progress reporting, and cancellation, along with other bug fixes.… more - 🆕SFFE released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
3.6 ★
149 ratings
Measured
Best rank now
#29
Productivity PaidMeasured
SFFE on the App Store
App details
App ID
1588740825
Publisher
BLUEAT
On the store since
Oct 2021
5 years on the store
Minimum OS
iOS 18.4+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
2
EN KO
Size
6 MB
Also listed in
Utilities
SFFE downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where SFFE's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| South Korea | ProductivityPaid | #29 |
Apps near SFFE on the chart
Productivity Paid, around #29.
Ratings
App Store, worldwide.
Rating
3.6 ★
149 ratings
Measured
Ratings
149
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
3.6★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
45/100
faster than 42% of Productivity apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about SFFE
From recent reviews.
About SFFE
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: [email protected]
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: [email protected]
Latest updates
3.3
Improved font application and update reliability in Safari.
- More reliable preservation of saved fonts, groups, and site settings during updates.
- Improved font application in new tabs and pages that are already open.
- Font group changes and site/global switches now update pages without reloading.
- More consistent language and font-weight mappings and previews.
- Improved large font imports, progress reporting, and cancellation, along with other bug fixes.