# Gravox vs Zero?

The clearest difference is price: Zero? at Free against Gravox's $0.99. Zero? also leads on iOS requirement (8.0 vs 14.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Zero? is free to download; Gravox costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Gravox ships an update every 5 months, Zero? every 3 months. The most recent releases landed on May 16, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Gravox | Zero? |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[3.3 (4 ratings)](https://appshunter.io/ios/app/zero/id1025506040/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 4 MB | 27 MB |
| Requires iOS | 14.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [yukihiro fujita](https://appshunter.io/developer/537078708) | [Greg Sharpe](https://appshunter.io/developer/817544895) |

## What reviewers say

### Gravox

[App page](https://appshunter.io/ios/app/gravox-change-the-gravity/id545827621)

**Features:** macOS Compatibility

**In-app purchases:** none


### Zero?

[App page](https://appshunter.io/ios/app/zero/id1025506040)

A fast-paced number game where players must quickly determine if sums of numbers are multiples of ten. Offers various modes for solo play or head-to-head challenges with friends.

**Highlights:** Sum calculation challenges, Timed gameplay, Relaxed mode without time pressure, Two-player head-to-head mode, Multiplayer on a single device

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gravox free?

Gravox costs $0.99, with no in-app purchases.

### Is Zero? free?

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

### Do Gravox or Zero? have ads?

Neither Gravox nor Zero? shows ads.

### Which is updated more often, Gravox or Zero??

Gravox ships an update every 5 months, and Zero? every 3 months. Most recently, Gravox was updated on May 16, 2026 and Zero? on October 3, 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.*