Comparison

TimeSeeker 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

TimeSeeker

Features
Read full description

TimeSeeker is a relative-time timezone app. Unlike standard world clocks that show independent times, TimeSeeker shows time in other cities relative to your chosen base city - with clear offsets like "+7.5h" or "-11.5h" and date labels. FEATURES - Relative Time View β€” Select a base city and instantly see how time compares across all your locations with clear offset labels. - Time Scrubber β€” Drag the ruler-style slider to plan meetings up to 36 hours ahead or behind and see equivalent times everywhere. - Communication Hours β€” Color-coded indicators show whether it's a good, marginal, or poor time to reach someone in another city. - 486 Cities Worldwide β€” Search by city name, country, or common aliases like USA, UK, and UAE. - Reorderable List β€” Drag to rearrange your cities. Your base city stays pinned at the top. - Works Offline β€” All timezone calculations happen on your device. No internet required. - No Ads, No Tracking β€” Zero analytics, no accounts, no data collection. Your data stays on your device. PERFECT FOR - Remote teams coordinating across global offices - Families and friends in different countries - Frequent travellers and expatriates - Anyone scheduling across time zones

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

TimeSeeker4 screens
CHALLNA4 screens

Verdict

The call

TimeSeeker and CHALLNA are too close to call on the numbers: across 5 compared parameters β€” price, ads, in-app purchases and device support among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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.

ScorecardNo meaningful differences
TimeSeeker versus CHALLNA: the parameters behind the verdict, then further details
ParameterTimeSeekerCHALLNA
PriceFreeFree
Positive reviewsβ€”100.0% of reviews
Update frequencyβ€”Every 2 weeks
AdsNoNo
In-app purchasesNoNo
Monetizationβ€”Free
DevicesiPhoneiPhone, iPad β€” better
Requires iOS17.016.6 β€” better
Further details β€” not scored
Size5 MB38 MB
Age rating4+4+
DeveloperPraveen Kumar SrinivasanRYNYUL

In-app purchases

None

TimeSeeker

No in-app purchases

None

CHALLNA

No in-app purchases

Questions

Is TimeSeeker free?
TimeSeeker is free to download, with no in-app purchases.
Is CHALLNA free?
CHALLNA is free to download, with no in-app purchases.
Do TimeSeeker or CHALLNA have ads?
Neither TimeSeeker nor CHALLNA shows ads.

Other comparisons