# Surprised!ReactionTimeChecker?

> Surprise app that captures photos of users when startled by fear images. (iPhone/iPad app by NSC, K.K..)

- Source: https://appshunter.io/ios/app/surprisedreactiontimechecker/id553393907 (this page in markdown: same URL + `.md`)
- Developer: [NSC, K.K.](https://appshunter.io/developer/501890400)
- Category: Entertainment, Games, Action, Family
- Price: Free
- Age rating: 12+
- Requires: iOS 15.6 · 24 MB
- Languages: English, Japanese
- Released: 2013-04-08
- Data updated: 2026-06-01
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/surprisedreactiontimechecker/id553393907/reviews.md

## What is Surprised!ReactionTimeChecker??

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

## Key features

- Sudden fear image display
- Captures user's surprised photo
- Sound effects in silent mode
- Requires camera permission
- Prank and surprise friends

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/surprisedreactiontimechecker/id553393907/reviews.md

### 5/5 — まなと

*2022-06-21, version 4.0*

ヤンキー
になること
がんばること

じてんしゃ

おもいでずがこうさくずくり

### 5/5 — いい

*2020-08-23, version 3.6*

面白い

### 5/5 — いいね

*2017-11-06, version 3.0*

まほっちゃんから

### 4/5 — まあまあ

*2015-11-06, version 1.2*

マホトさんの動画でやってた‼︎

## Frequently asked questions about Surprised!ReactionTimeChecker?

### Does Surprised!ReactionTimeChecker? have ads?

Yes, Surprised!ReactionTimeChecker? contains advertisements. As it is a free application, ads are used to support its development and maintenance.

### What is the age rating for Surprised!ReactionTimeChecker?

Surprised!ReactionTimeChecker? has an age rating of 12+. This is based on the content and potential for startling reactions.

### What devices does Surprised!ReactionTimeChecker? support?

Surprised!ReactionTimeChecker? is available on iPhone, iPad, and iPod devices. It is designed to function across these Apple platforms.

### How often is Surprised!ReactionTimeChecker? updated?

The latest version of Surprised!ReactionTimeChecker? is 5.4, last updated on September 9, 2025. This indicates regular updates to maintain functionality and potentially add new features.

### Does Surprised!ReactionTimeChecker? work offline?

The description does not explicitly state offline functionality. However, to use the camera function and display fear images, an internet connection may be required.

### What permissions does Surprised!ReactionTimeChecker? require?

Surprised!ReactionTimeChecker? requires 'Camera' permission to take photos and 'Add photos only' permission to save them. Users will also see a tracking permission dialog on iOS 14.5+.

### Can I turn off the sound effects in Surprised!ReactionTimeChecker?

No, the application has sound effects even in silent mode. This is a core feature designed to enhance the surprise element.

### What should I do if I have problems with Surprised!ReactionTimeChecker?

For any problems or requests regarding Surprised!ReactionTimeChecker?, you can check the 'Contact Us' page on the developer's website (https://www.nscnet.jp/inquiry.html) and send an email.

## Version history (last 5 releases)

### 5.4 — 2025-09-09

I've made the following changes:
- Adjusted the layout.
- Fixed bugs.

### 5.3 — 2025-03-31

- Bug fixed.
- From Ver. 5.3, iOS 15.6 or later is supported.

### 5.2 — 2024-12-17

Bug fixed.
Compatible with iOS 14.0 or later from Ver.5.2.

### 5.1 — 2023-10-09

- Renewed some of the scary images.
- Other bug fixed.

### 5.0 — 2022-11-09

-Bug fixed.
-Compatible with iOS 13.1 and above.

## Apps similar to Surprised!ReactionTimeChecker?

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [びっくりアプリ](https://appshunter.io/ios/app/id1508282901) | 1.0 (1) | $1.99 | Entertainment |
| [Mental Dice](https://appshunter.io/ios/app/mental-dice/id1580340447) | — | $3.99 | Entertainment |
| [Anime Scare Challenge](https://appshunter.io/ios/app/anime-scare-challenge/id6753149758) | — | Free | Entertainment |
| [耐久 お母さんの説教](https://appshunter.io/ios/app/id1524819090) | — | Free | Entertainment |
| [Jump Scare Challenge](https://appshunter.io/ios/app/jump-scare-challenge/id6449626567) | — | Free | Entertainment |
| [ルーレットSS](https://appshunter.io/ios/app/ss/id1638657043) | — | Free | Entertainment |

## More apps by NSC, K.K.

- [MilkingLesson](https://appshunter.io/ios/app/milkinglesson/id532479176)
- [ReactionTimeChecker](https://appshunter.io/ios/app/reactiontimechecker/id537191082)
- [DeliveryAgent](https://appshunter.io/ios/app/deliveryagent/id544597789)
- [ToiletPaper.](https://appshunter.io/ios/app/toiletpaper/id566524855)
- [合コン幹事 せきガエる](https://appshunter.io/ios/app/id632405543)

All apps by NSC, K.K.: https://appshunter.io/developer/501890400

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*