CHALLNA: Precise Server Clock
Not in any tracked top chart right now.
Updated 23 Oct 2026 · rankings refresh through the day
DeveloperRYNYUL
CategoryUtilities
PriceFree
Released
Rating★ 4.7 (3)
Version1.0.3
Age rating4+
First seen by us
24 Oct 2026
24 Oct 2026Rating
4.7 ★
3 ratings
Measured
CHALLNA: Precise Server Clock on the App Store
App details
App ID
6759583731
Publisher
RYNYUL
On the store since
Feb 2026
Under a year
Minimum OS
iOS 16.6+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
40 MB
Also listed in
Lifestyle
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.7 ★
3 ratings
Measured
Ratings
3
Measured
About CHALLNA: Precise Server Clock
■ 0.01 Seconds Make All the Difference.
Have you ever missed out on popular concert tickets, course registrations, or limited-edition drops by a split second? Don’t rely on your phone’s local time. Check the "Real Server Time" of the site itself. 'CHALLNA' will drastically increase your success rate.
■ Why CHALLNA? (Key Features)
1. Millisecond(ms) Precision Synchronization
We do more than just fetch server time. CHALLNA calculates network latency (RTT) and average transmission deviations in real-time to correct any errors. Find the "true" 0.01 second with Korea’s highest level of precision.
2. One-Touch Server Presets
Interpark, YES24, Melon Ticket, and even major university registration sites! No need to type addresses manually. Simply search to instantly register and track your desired server.
3. Intuitive Countdown & Target Setting
Set your goal time and watch the countdown in real-time down to the millisecond. Stay perfectly prepared for that high-pressure moment right before the opening.
4. Click Practice for Real-World Reflexes
Theory is different from practice! Use the built-in 'On-the-Dot Click Practice' to check your reaction speed and master the feeling of clicking at exactly 0.00 seconds.
5. Smart Reminders & Schedule Registration (HOT!)
Register your important ticketing or course registration schedules. We’ll make sure you’re ready with custom notifications before your target time, even in your busy daily life.
6. Direct Site Access
Why check the time and switch apps separately? CHALLNA provides direct outlinks to the sites, shortening your access time to the absolute minimum.
7. Dynamic Island Support
Keep tracking the time via Dynamic Island even while moving to the ticketing site, ensuring you never miss the countdown. (Available on iPhone 14 Pro and later models)
■ Highly Recommended For:
• Concert fans tired of losing out in "Blood-keting" (bloody ticketing).
• Students desperate to secure popular university courses.
• Anyone needing perfect timing for holiday train bookings or limited drops.
• Perfectionists who won't settle for even a 0.01-second error.
■ Please Note:
• Minor errors may occur depending on network conditions. We recommend using a stable Wi-Fi, 5G, or LTE environment.
• For the best results, be sure to use the 'Click Practice' feature in advance!
Download 'CHALLNA' now and experience the miracle of 0.01 seconds!
Have you ever missed out on popular concert tickets, course registrations, or limited-edition drops by a split second? Don’t rely on your phone’s local time. Check the "Real Server Time" of the site itself. 'CHALLNA' will drastically increase your success rate.
■ Why CHALLNA? (Key Features)
1. Millisecond(ms) Precision Synchronization
We do more than just fetch server time. CHALLNA calculates network latency (RTT) and average transmission deviations in real-time to correct any errors. Find the "true" 0.01 second with Korea’s highest level of precision.
2. One-Touch Server Presets
Interpark, YES24, Melon Ticket, and even major university registration sites! No need to type addresses manually. Simply search to instantly register and track your desired server.
3. Intuitive Countdown & Target Setting
Set your goal time and watch the countdown in real-time down to the millisecond. Stay perfectly prepared for that high-pressure moment right before the opening.
4. Click Practice for Real-World Reflexes
Theory is different from practice! Use the built-in 'On-the-Dot Click Practice' to check your reaction speed and master the feeling of clicking at exactly 0.00 seconds.
5. Smart Reminders & Schedule Registration (HOT!)
Register your important ticketing or course registration schedules. We’ll make sure you’re ready with custom notifications before your target time, even in your busy daily life.
6. Direct Site Access
Why check the time and switch apps separately? CHALLNA provides direct outlinks to the sites, shortening your access time to the absolute minimum.
7. Dynamic Island Support
Keep tracking the time via Dynamic Island even while moving to the ticketing site, ensuring you never miss the countdown. (Available on iPhone 14 Pro and later models)
■ Highly Recommended For:
• Concert fans tired of losing out in "Blood-keting" (bloody ticketing).
• Students desperate to secure popular university courses.
• Anyone needing perfect timing for holiday train bookings or limited drops.
• Perfectionists who won't settle for even a 0.01-second error.
■ Please Note:
• Minor errors may occur depending on network conditions. We recommend using a stable Wi-Fi, 5G, or LTE environment.
• For the best results, be sure to use the 'Click Practice' feature in advance!
Download 'CHALLNA' now and experience the miracle of 0.01 seconds!
Latest updates
1.0.3
Server time synchronization has been improved.
App performance has been stabilized.
