# Time Perception Test vs STOP!!TIMER!!!

The clearest difference is update cadence: Time Perception Test at every 2 days against STOP!!TIMER!!!'s every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Time Perception Test ships an update every 2 days, STOP!!TIMER!!! every 4 months. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Time Perception Test | STOP!!TIMER!!! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/time-perception-test/id6449470351/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 4 months |
| Monetization | Ad-supported | — |
| Size | 46 MB | 120 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Osawa Shunsuke](https://appshunter.io/developer/477431394) | [Kyosuke Noguchi](https://appshunter.io/developer/1767325191) |

## What reviewers say

### Time Perception Test

[App page](https://appshunter.io/ios/app/time-perception-test/id6449470351)

Test your ability to accurately judge time intervals from 1 to 30 seconds. Improve your time sense and enhance productivity and decision-making skills in daily life. This app helps you develop a better understanding of time and manage your schedule more effectively.

**Highlights:** Test time intervals (1, 3, 5, 10, 30 seconds), Compare predicted vs. actual reaction time, Improve productivity and efficiency, Hone time management skills, Develop intuitive decision-making

**Features:** macOS Compatibility

**In-app purchases:** none


### STOP!!TIMER!!!

[App page](https://appshunter.io/ios/app/stoptimer/id6736664356)

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

**In-app purchases:** none


## Frequently asked questions

### Is Time Perception Test free?

Time Perception Test is free to download, with no in-app purchases.

### Is STOP!!TIMER!!! free?

STOP!!TIMER!!! is free to download, with no in-app purchases.

### Do Time Perception Test or STOP!!TIMER!!! have ads?

Both Time Perception Test and STOP!!TIMER!!! show ads.

### Which is updated more often, Time Perception Test or STOP!!TIMER!!!?

Time Perception Test ships an update every 2 days, and STOP!!TIMER!!! every 4 months. Most recently, Time Perception Test was updated on October 10, 2026 and STOP!!TIMER!!! on October 8, 2026.

---

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