# StopTime vs ZeroIn

The clearest difference is in-app purchases: StopTime at none against ZeroIn's 3. StopTime also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. ZeroIn sells 3 one-off in-app purchases. StopTime asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on September 20, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | StopTime | ZeroIn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | Every 5 days |
| Size | 130 MB | 53 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Arman Mkhitarian](https://appshunter.io/developer/1860912570) | [Emre ALTUN](https://appshunter.io/developer/1852335131) |

## What reviewers say

### StopTime

[App page](https://appshunter.io/ios/app/stoptime-timer-reaction-game/id6772400704)

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

**In-app purchases:** none


### ZeroIn

[App page](https://appshunter.io/ios/app/zeroin-time-challenge/id6788565326)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Life Refill | $1.99 | one-time |
| Remove Ads | $3.99 | one-time |
| ZeroIn Pro | $9.99 | one-time |


## Frequently asked questions

### Is StopTime free?

StopTime is free to download, with no in-app purchases.

### Is ZeroIn free?

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

### Do StopTime or ZeroIn have ads?

ZeroIn shows ads; StopTime does not.

### Which is updated more often, StopTime or ZeroIn?

StopTime ships an update every 5 days, and ZeroIn every 5 days. Most recently, StopTime was updated on September 20, 2026 and ZeroIn on September 17, 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.*