Comparison

Floating Clock vs CHALLNA

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

Head to head
About

Floating Clock

This app provides precise server time, down to the millisecond, for critical events like ticketing and registration. It offers real-time viewing on your lock screen or as an overlay while using other apps, ensuring you never miss an opportunity. Customizable alerts help manage your time efficiently.

Highlights
  • Millisecond-precision server time
  • Lock screen and Dynamic Island display
  • Picture-in-Picture (PIP) mode overlay
  • Customizable audio alerts
  • Event-specific reminders
  • Real-time error correction
Features
Read full description

Keep a floating clock in view while you use other apps. See a website's server time as you browse a booking page, and chat with others while you wait. Keep a floating clock over other apps β€’ Use Picture in Picture (PiP) to keep server time visible while you browse or book tickets in another app. β€’ Choose how often the clock alerts you, with sound and color cues starting 10 seconds beforehand. Check server time and the time difference β€’ When you open a site for the first time, the app measures its server time and shows how it differs from your iPhone's clock. β€’ Time is displayed in hundredths of a second. You can also check the estimated measurement error. See the time on your Lock Screen and Dynamic Island β€’ Use Live Activities to see server time, down to the second, on your Lock Screen. β€’ On compatible iPhones, Dynamic Island shows the site's name and time. Chat while you wait β€’ Share queue numbers and server status in the chat room for your site, and react to messages with emoji. β€’ Join the Lounge to talk with other app users. Schedule reminders by server time β€’ Set a reminder for the top of the next hour or midnight tonight. β€’ Choose 5, 3, or 1 minute before the scheduled time, or at the time itself.

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
Read full description

β–  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. β–  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) β–  Highly Recommended For: β€’ Concert fans tired of losing out in "Blood-keting" (bloody ticketing). β€’ Students desperate to secure popular university courses. β€’ Anyone needing perfect timing for holiday train bookings or limited drops. β€’ Perfectionists who won't settle for even a 0.01-second error. β–  Please Note: β€’ Minor errors may occur depending on network conditions. We recommend using a stable Wi-Fi, 5G, or LTE environment. β€’ 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!

Screenshots

Floating Clock4 screens
CHALLNA4 screens

Verdict

The call

The clearest difference is ads: CHALLNA at none against Floating Clock's shown. On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.

Scorecard1 real difference Β· 7 level
Floating Clock versus CHALLNA: the parameters behind the verdict, then further details
ParameterFloating ClockCHALLNA
PriceFreeFree
Positive reviews93.8% of reviews100.0% of reviews β€” better
Update frequencyEvery 2 weeksEvery 2 weeks
AdsYesNo β€” better
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad β€” better
Requires iOS16.4 β€” better16.6
Further details β€” not scored
Size13 MB38 MB
Age rating4+4+
DeveloperMoongil JeonRYNYUL

Customer experience

Floating Clock

Written reviews16 reviews
Positive93.8%
Neutral0.0%
Negative6.3%

CHALLNA

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Floating Clock

No in-app purchases

None

CHALLNA

No in-app purchases

Questions

Is Floating Clock free?
Floating Clock is free to download, with no in-app purchases.
Is CHALLNA free?
CHALLNA is free to download, with no in-app purchases.
Do Floating Clock or CHALLNA have ads?
Floating Clock shows ads; CHALLNA does not.
Which is updated more often, Floating Clock or CHALLNA?
Floating Clock ships an update every 2 weeks, and CHALLNA every 2 weeks. Most recently, Floating Clock was updated on September 18, 2026 and CHALLNA on September 23, 2026.

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