# ZeroIn vs Timer Challenge

The clearest difference is in-app purchases: Timer Challenge at none against ZeroIn's 3. ZeroIn's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

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

## The numbers

| Metric | ZeroIn | Timer Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zeroin-reaction-time-and-reflex/id6788565326/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 6 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Emre ALTUN](https://appshunter.io/developer/1852335131) | [DOHYUN KIM](https://appshunter.io/developer/6805754957) |

## What reviewers say

### ZeroIn

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

A reflex game where players stop a timer precisely on target, featuring various timing modes and challenges. Compete with others online or test your skills through hundreds of levels. Boosters and daily rewards help you progress.

**Highlights:** Stopwatch timing challenges, Visible, vanishing, and blind timing modes, Math and time estimation targets, Online reflex duels with leaderboards, Monthly seasons with rewards, Boosters for assistance, Daily rewards and streaks

**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 |


### Timer Challenge

[App page](https://appshunter.io/ios/app/timer-challenge-party-game/id6805754955)

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

**In-app purchases:** none


## Frequently asked questions

### Is ZeroIn free?

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

### Is Timer Challenge free?

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

### Do ZeroIn or Timer Challenge have ads?

Both ZeroIn and Timer Challenge show ads.

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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.*