# ZEROED vs One Second Challenge

The clearest difference is in-app purchases: One Second Challenge at none against ZEROED's 2. One Second Challenge also leads on ads (none vs shown). ZEROED'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. ZEROED sells 2 in-app purchases, starting at $0.99 per month. One Second Challenge asks for nothing beyond the download.

ZEROED ships an update every 3 days, One Second Challenge every 6 weeks. The most recent releases landed on September 18, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | ZEROED | One Second Challenge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 6 weeks |
| Size | 46 MB | 1 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Mert Tuna Ozerdem](https://appshunter.io/developer/1808839292) | [THEJ KUMAR SIDDHOTAM ARULRAJ](https://appshunter.io/developer/1781177167) |

## What reviewers say

### ZEROED

[App page](https://appshunter.io/ios/app/zeroed-stop-the-clock/id6768099148)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZEROED Pro Monthly | $0.99 | per month |
| ZEROED Pro Lifetime | $9.99 | one-time |


### One Second Challenge

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

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

**In-app purchases:** none


## Frequently asked questions

### Is ZEROED free?

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

### Is One Second Challenge free?

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

### Do ZEROED or One Second Challenge have ads?

ZEROED shows ads; One Second Challenge does not.

### Which is updated more often, ZEROED or One Second Challenge?

ZEROED ships an update every 3 days, and One Second Challenge every 6 weeks. Most recently, ZEROED was updated on September 18, 2026 and One Second Challenge on September 10, 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.*