# Surprised!ReactionTimeChecker? vs SpinnerSS

The clearest difference is in-app purchases: Surprised!ReactionTimeChecker? at none against SpinnerSS's 3. Surprised!ReactionTimeChecker? also leads on iOS requirement (15.6 vs 26.0). SpinnerSS's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 6 months). On price and device support there is nothing between them.

Both are free to download. SpinnerSS sells 3 one-off in-app purchases. Surprised!ReactionTimeChecker? asks for nothing beyond the download.

Surprised!ReactionTimeChecker? ships an update every 6 months, SpinnerSS every 3 weeks. The most recent releases landed on October 23, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Surprised!ReactionTimeChecker? | SpinnerSS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Ad-supported | — |
| Size | 24 MB | 32 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [NSC, K.K.](https://appshunter.io/developer/501890400) | [IDEA-RING Inc.](https://appshunter.io/developer/1638657045) |

## What reviewers say

### Surprised!ReactionTimeChecker?

[App page](https://appshunter.io/ios/app/surprisedreactiontimechecker/id553393907)

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

**In-app purchases:** none


### SpinnerSS

[App page](https://appshunter.io/ios/app/spinnerss-spin-magic-wheel/id1638657043)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | one-time |
| 広告非表示 | $0.99 | one-time |
| Unlock All Star Dial Features | $4.99 | one-time |


## Frequently asked questions

### Is Surprised!ReactionTimeChecker? free?

Surprised!ReactionTimeChecker? is free to download, with no in-app purchases.

### Is SpinnerSS free?

SpinnerSS is free to download, with in-app purchases available.

### Do Surprised!ReactionTimeChecker? or SpinnerSS have ads?

Surprised!ReactionTimeChecker? shows ads; SpinnerSS does not.

### Which is updated more often, Surprised!ReactionTimeChecker? or SpinnerSS?

Surprised!ReactionTimeChecker? ships an update every 6 months, and SpinnerSS every 3 weeks. Most recently, Surprised!ReactionTimeChecker? was updated on October 23, 2026 and SpinnerSS on October 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*