Comparison

CHALLNA vs 카드피커

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

Head to head
About

CHALLNA

This app helps you achieve precise timing for critical online events by displaying accurate server time, accounting for network latency. It offers one-touch presets for popular sites, countdown timers, and practice modes to improve your reaction speed for ticket sales, course registrations, and limited drops.

Highlights
  • Millisecond precision synchronization
  • One-touch server presets
  • Intuitive countdown timers
  • Click practice mode
  • Smart reminders and schedule registration
  • Direct site access
  • Dynamic Island support
Features
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■ 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!

About

카드피커

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"결제 전, 어떤 카드가 가장 이득일까?" 이제 카드피커가 알려드릴게요! 편의점, 카페, 주유소... 매번 결제할 때마다 어떤 카드를 써야 할지 고민되셨나요? 보유한 카드를 등록하고 업종과 금액만 입력하면 AI가 혜택이 가장 큰 카드를 순위별로 추천해드려요. 핵심 기능: • AI 혜택 분석: 업종과 결제 금액에 따라 내 카드 중 가장 유리한 카드를 즉시 추천합니다. • 순위별 비교: 할인, 포인트, 마일리지 혜택을 한눈에 비교하고 최적의 카드를 선택하세요. • 간편한 카드 등록: 카드사와 상품명을 선택하면 바로 등록 완료. 여러 장도 한 번에 관리합니다. • 조회 히스토리: 이전에 확인한 혜택 결과를 언제든지 다시 확인할 수 있습니다. • 프리미엄 서비스: 광고 없이 더 많은 혜택 조회로 스마트한 소비 습관을 만들어보세요. ※ AI 기반 추정 결과로 실제 혜택과 다를 수 있습니다. 정확한 혜택은 카드사에서 확인해 주세요. 이용약관: https://ai-itda.notion.site/33a657a5888d807bb53be3480722a81d 개인정보 처리방침: https://ai-itda.notion.site/33a657a5888d8000809edd4d991dcfaa

Screenshots

CHALLNA4 screens
카드피커4 screens

Verdict

The call

The clearest difference is in-app purchases: CHALLNA at none against 카드피커's 3. CHALLNA also leads on ads (none vs shown). 카드피커's advantage is update cadence (every 4 days vs every 2 weeks). On price, device support and iOS requirement 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

Both are free to download. 카드피커 sells 3 in-app purchases, starting at $1.99 per month. CHALLNA asks for nothing beyond the download.

UpkeepUpdate frequency

CHALLNA ships an update every 2 weeks, 카드피커 every 4 days. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 5 level
CHALLNA versus 카드피커: the parameters behind the verdict, then further details
ParameterCHALLNA카드피커
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 2 weeksEvery 4 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.615.0 — better
Further details — not scored
Size38 MB94 MB
Age rating4+4+
DeveloperRYNYULDONGWOO KIM

In-app purchases

None

CHALLNA

No in-app purchases

3 purchases

카드피커

Subscriptions2
  • 카드피커 프리미엄7 Days trial$1.991 Month
  • 카드피커 VIP7 Days trial$19.991 Month
One-time1
  • 카드피커 프리미엄 초기화$0.49

Questions

Is CHALLNA free?
CHALLNA is free to download, with no in-app purchases.
Is 카드피커 free?
카드피커 is free to download, with in-app purchases available.
Do CHALLNA or 카드피커 have ads?
카드피커 shows ads; CHALLNA does not.
Which is updated more often, CHALLNA or 카드피커?
CHALLNA ships an update every 2 weeks, and 카드피커 every 4 days. Most recently, CHALLNA was updated on October 12, 2026 and 카드피커 on October 8, 2026.

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