Comparison

Surprised!ReactionTimeChecker? vs スマッシュ!

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

Head to head
About

Surprised!ReactionTimeChecker?

This app captures photos of users when they are startled by sudden fear images. It's designed for playful pranks to surprise friends and family, documenting their genuine reactions. Note that it utilizes sound effects even in silent mode and requires camera permissions.

Highlights
  • Sudden fear image display
  • Captures user's surprised photo
  • Sound effects in silent mode
  • Requires camera permission
  • Prank and surprise friends
Read full description

This app " Surprised! Reaction Time Checker?” is not an app to measure reflexes. When playing in a game that measures reflexes, it suddenly displays a fear image, and it is a surprise app to take a picture of the player of that moment. Surprise your friends, lovers and family and get their photos! You may get a photo of the surprised look of a yearning person ... *This application has sound effects even in silent mode. *In order to use the camera function to take photos, you need "Camera" and "Add photos only" permission to use this app. *Please check the photos taken with the "Photos" app. *Shaking the device violently can cause photos to be blurred. *Be aware that the player is surprised and may break the device. *Even if the user uses this game, the user or a third party other than the user, equipment, or even if there is a case where damage or a failure has occurred in human relations, we do not have any responsibility. *If you are using iOS 14.5 or later, a dialog asking for tracking permission will be displayed at the first startup. Production: NSC, K.K. If you have any problems or requests, please check the contents of the “Contact Us” page on our website and send us an e-mail. Click here for “Contact Us”: https://www.nscnet.jp/inquiry.html

About

スマッシュ!

Features
Read full description

スマッシュ!は、写真の顔を思いきり変形して遊べる写真加工アプリです。 写真を選んでエフェクトをタップするだけ。顔が伸びる、ふくらむ、ねじれるなど、思わず笑ってしまう加工をすぐに楽しめます。 【できること】 ・写真の顔をユニークに変形 ・10種類のエフェクトを収録 ・加工前に戻せるUndo機能 ・顔の加工をまとめて戻す機能 ・完成した画像を保存 友だちとの写真、家族の写真、思い出の一枚を、ちょっと変な一枚に。 スマッシュ!で、気軽に笑える写真加工を楽しんでください。 無料版では1日5回までスマッシュできます。 「スマッシュ 無制限」(買い切り300円)を購入すると、回数制限なく利用できます。

Screenshots

Surprised!ReactionTimeChecker?3 screens
スマッシュ!4 screens

Verdict

The call

The clearest difference is ads: スマッシュ! at none against Surprised!ReactionTimeChecker?'s shown. スマッシュ! also leads on update cadence (every 11 days vs every 6 months). On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Surprised!ReactionTimeChecker? ships an update every 6 months, スマッシュ! every 11 days. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 6 level
Surprised!ReactionTimeChecker? versus スマッシュ!: the parameters behind the verdict, then further details
ParameterSurprised!ReactionTimeChecker?スマッシュ!
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 6 monthsEvery 11 days — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size24 MB41 MB
Age rating12+12+
DeveloperNSC, K.K.HIDEKI TAMAI

In-app purchases

None

Surprised!ReactionTimeChecker?

No in-app purchases

None

スマッシュ!

No in-app purchases

Questions

Is Surprised!ReactionTimeChecker? free?
Surprised!ReactionTimeChecker? is free to download, with no in-app purchases.
Is スマッシュ! free?
スマッシュ! is free to download, with no in-app purchases.
Do Surprised!ReactionTimeChecker? or スマッシュ! have ads?
Surprised!ReactionTimeChecker? shows ads; スマッシュ! does not.
Which is updated more often, Surprised!ReactionTimeChecker? or スマッシュ!?
Surprised!ReactionTimeChecker? ships an update every 6 months, and スマッシュ! every 11 days. Most recently, Surprised!ReactionTimeChecker? was updated on November 1, 2026 and スマッシュ! on October 25, 2026.

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