Comparison

Fasoo View Plus vs CHALLNA

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

Head to head
About

Fasoo View Plus

Features
Read full description

Fasoo View Plus allows users to safely and securely view and edit their documents as they do on their PC through their mobile device. ※ Fasoo View Plus can only be used by Fasoo Mobile Solution users. Fasoo Mobile Solution Fasoo Mobile Solution extends work flow on to the mobile environment to allow people to communicate and collaborate through smartphones and tablets. It enables organizations to persistently secure, control and trace confidential documents on mobile devices. Fasoo View Plus is not intended for personal users. Fasoo View Plus allows you to perform these following functions from your mobile device: - All previous functions offered by Fasoo View (Fasoo View functions for iOS) - Based on your predefined policy, you will be able to copy, paste, decrypt and edit. - Set the geographic location of where the document viewed based on the user’s predefined policy - View or transmit the geographic location history of where the document has been accessed ※ Continued use of GPS running in the background can dramatically decrease battery life. Supported File Applications View & Edit - MS Word 97 ~ (*.doc, *.docx) - MS PowerPoint 97 ~ (*.ppt, *.pptx) - MS Excel 97 ~ (*.xls, *.xlsx) - Text file (*.txt) View Only - MS Word 97 ~ (*.dot, *.dotx) - MS PowerPoint 97 ~ (*.pps, *.ppsx. *.pot, *.potx) - MS Excel 97 ~ (*.xltx, *.csv) - Arae-A Hangul 97~3.0, 2002~2014 (*.hwp, *.hwpx) - Adobe PDF 1.2 ~ 1.7 (*.pdf) - Text file (*.asc) - Image file (*.bmp, *.jpg, *.png, *.gif, *.wmf, *.emf, *.jpeg, *.tiff)

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

■ 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!

Screenshots

Fasoo View Plus4 screens
CHALLNA4 screens

Verdict

The call

The clearest difference is update cadence: CHALLNA at every 2 weeks against Fasoo View Plus's monthly. On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fasoo View Plus ships an update monthly, CHALLNA every 2 weeks. The most recent releases landed on September 16, 2026 and August 24, 2026 respectively.

Scorecard1 real difference · 7 level
Fasoo View Plus versus CHALLNA: the parameters behind the verdict, then further details
ParameterFasoo View PlusCHALLNA
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.6
Further details — not scored
Size110 MB38 MB
Age rating4+4+
DeveloperFasoo AI Co., Ltd.RYNYUL

In-app purchases

None

Fasoo View Plus

No in-app purchases

None

CHALLNA

No in-app purchases

Questions

Is Fasoo View Plus free?
Fasoo View Plus is free to download, with no in-app purchases.
Is CHALLNA free?
CHALLNA is free to download, with no in-app purchases.
Do Fasoo View Plus or CHALLNA have ads?
Neither Fasoo View Plus nor CHALLNA shows ads.
Which is updated more often, Fasoo View Plus or CHALLNA?
Fasoo View Plus ships an update monthly, and CHALLNA every 2 weeks. Most recently, Fasoo View Plus was updated on September 16, 2026 and CHALLNA on August 24, 2026.

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