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CHALLNA: Precise Server Clock icon

CHALLNA: Precise Server Clock

Zero Lag, Perfect Timing
US flag US
1 of 1 storefronts
Content in en-US
Age Rating
4+
Years
Developer
Language
EN
Size
39.9
MB

Information

Apple ID6759583731
Bundle IDcom.rynyul.challna
SellerSeller
Min iOS16.6
Min macOS13.5
Device familiesiphone, ipad
Released2026-02-28
Copyright© RYNYUL
WebsiteLink ↗
Privacy policyLink ↗

Preview 2 platforms

iPhone 6 images

iPhone screenshot
iPhone screenshot
iPhone screenshot
iPhone screenshot
iPhone screenshot
iPhone screenshot

iPad 6 images

iPad screenshot
iPad screenshot
iPad screenshot
iPad screenshot
iPad screenshot
iPad screenshot

What’s New Version 1.0.3

Server time synchronization has been improved. App performance has been stabilized.

Description

■ 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!

Accessibility

ipadiphonemacrealityDevicetvoswatch

Version history 4 versions

Build 883817950v1.0.32026-03-27 16:12:59
Server time synchronization has been improved. App performance has been stabilized.
Build 883374147v1.0.22026-03-15 17:35:44
Seamless Timer: Dynamic Island Support
Build 882939759v1.0.12026-03-02 19:36:43
서버시간 동기화가 더욱 정확해졌습니다. 일정을 서로 공유하는 기능이 추가되었습니다. 타이밍에 집중할수 있도록 UI가 개선되었습니다.
Build 882725041v1.0.02026-02-28 18:39:46

No pricing data captured yet — comparisons appear once the app has paid storefronts or in-app purchases.

Availability 1 of 1 storefronts

RegionLanguagePriceRatingsAvgVersion
US en-USFree01.0.3

Change log 8 changes · US

releaseNotes updated
Server time synchronization has been improved. App performance has been stabilized.
description updated
■ 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? D
subtitle updated
Zero Lag, Perfect Timing
name updated
CHALLNA: Precise Server Clock
Version 1.0.3 released
Server time synchronization has been improved. App performance has been stabilized.
Version 1.0.2 released
Seamless Timer: Dynamic Island Support
Version 1.0.1 released
서버시간 동기화가 더욱 정확해졌습니다. 일정을 서로 공유하는 기능이 추가되었습니다. 타이밍에 집중할수 있도록 UI가 개선되었습니다.
Version 1.0.0 released
expanded screenshot