Comparison

Crystal Disk vs TKS notice

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

Head to head
About

Crystal Disk

Features
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Crystal Disk is the software designed for V-smart Airdisk wireless portable storage devices. This app allows you to backup, store, transfer, and exchange files easily between Mac/PC, smartphones, tablets, and other iOS mobile devices without any other synchronization software such as iTunes. Crystal Disk allows you to store, view, and manage files on your iOS mobile devices and backing up your music, photos, and documents in the Airdisk storage device. You can also recover the data on any mobile device on all operating systems. Other feature include - Backup of contact information and recovery on a different platform Powerful media player that supports all major media formats Audio: mp3, aac, m4a, aif, aiff, wav, flac, ape, and more

About

TKS notice

Features
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"First in Japan!" A health check application that allows you to monitor the expiration date of your "Domain" and "SSL" with a simple operation! "Up to 145 URLs can be registered at the lowest price !" Have problems missing SMS or email nortifications? TKS notice App will notify you with "device notifications"! -How to use 1.Download app 2.Enter the site name and domain name 3.Set expiration date reminder Once you've registered and set your notifications, just leave the app alone! The app will automatically update twice a day to let you know if there's anything wrong! - forgot to renew the expiration date. - Failed to notice quickly that the site was down Solve these problems with TKS notice! Download now , monitor your Web site on a daily basis and say good bye to these problems ! Notes: -Account registration is required for device transfer. -You can register more URLs by In-App Purchases. Terms of service: https://dokokade.co.jp/terms_tks_notice Privacy Policy https://dokokade.co.jp/privacypolicy_apps_tks_notice

Screenshots

Crystal Disk4 screens
TKS notice4 screens

Verdict

The call

The clearest difference is in-app purchases: Crystal Disk at none against TKS notice's 5. Crystal Disk also leads on iOS requirement (8.0 vs 14.0). TKS notice's advantage is update cadence (fortnightly vs every 6 weeks). On price, ads and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. TKS notice sells 5 in-app purchases, starting at $4.49 per month. Crystal Disk asks for nothing beyond the download.

UpkeepUpdate frequency

Crystal Disk ships an update every 6 weeks, TKS notice fortnightly. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

Scorecard3 real differences ยท 3 level
Crystal Disk versus TKS notice: the parameters behind the verdict, then further details
ParameterCrystal DiskTKS notice
PriceFreeFree
Update frequencyEvery 6 weeksFortnightly โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPod
Requires iOS8.0 โ€” better14.0
Further details โ€” not scored
Size86 MB69 MB
Age rating4+4+
DeveloperSunita Telecom Co.,Ltd.Dokokade Inc.

In-app purchases

None

Crystal Disk

No in-app purchases

5 purchases

TKS notice

Subscriptions5
  • Plan 5$4.491 Month
  • Plan 12$9.491 Month
  • Plan 25$18.991 Month
Show 2 more
  • Plan 65$38.991 Month
  • Plan 140$76.991 Month

Questions

Is Crystal Disk free?
Crystal Disk is free to download, with no in-app purchases.
Is TKS notice free?
TKS notice is free to download, with in-app purchases available.
Do Crystal Disk or TKS notice have ads?
Neither Crystal Disk nor TKS notice shows ads.
Which is updated more often, Crystal Disk or TKS notice?
Crystal Disk ships an update every 6 weeks, and TKS notice fortnightly. Most recently, Crystal Disk was updated on October 26, 2026 and TKS notice on November 3, 2026.

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