# One Second Challenge vs Stop the Timer

The clearest difference is in-app purchases: One Second Challenge at none against Stop the Timer's 1. One Second Challenge also leads on ads (none vs shown). Stop the Timer's advantage is update cadence (every 3 days vs every 6 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Stop the Timer sells 1 one-off in-app purchase. One Second Challenge asks for nothing beyond the download.

One Second Challenge ships an update every 6 weeks, Stop the Timer every 3 days. The most recent releases landed on September 29, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | One Second Challenge | Stop the Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Size | 1 MB | 57 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [THEJ KUMAR SIDDHOTAM ARULRAJ](https://appshunter.io/developer/1781177167) | [Noam Sela](https://appshunter.io/developer/1708589672) |

## What reviewers say

### One Second Challenge

[App page](https://appshunter.io/ios/app/one-second-challenge/id6768998129)

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

**In-app purchases:** none


### Stop the Timer

[App page](https://appshunter.io/ios/app/stop-the-timer/id6778865340)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is One Second Challenge free?

One Second Challenge is free to download, with no in-app purchases.

### Is Stop the Timer free?

Stop the Timer is free to download, with in-app purchases available.

### Do One Second Challenge or Stop the Timer have ads?

Stop the Timer shows ads; One Second Challenge does not.

### Which is updated more often, One Second Challenge or Stop the Timer?

One Second Challenge ships an update every 6 weeks, and Stop the Timer every 3 days. Most recently, One Second Challenge was updated on September 29, 2026 and Stop the Timer on September 30, 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.*