# Gravity Zen vs Party VU meter

The clearest difference is price: Party VU meter at Free against Gravity Zen's $0.99. Party VU meter also leads on in-app purchases (none vs 2). Gravity Zen's advantage is ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

Party VU meter is free to download; Gravity Zen costs $0.99 up front. Gravity Zen sells 2 one-off in-app purchases. Party VU meter asks for nothing beyond the download.

Gravity Zen ships an update every 9 days, Party VU meter every 2 weeks. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Gravity Zen | Party VU meter |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.8 (70 ratings)](https://appshunter.io/ios/app/gravity-zen/id1602081846/reviews)** | — |
| Number of ratings | **70** | — |
| Positive reviews | 93.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | Paid | — |
| Size | 13 MB | 9 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +17 |
| Developer | [Dominik Hauser](https://appshunter.io/developer/325836858) | [Srecko Levacic](https://appshunter.io/developer/1723028917) |

## What reviewers say

### Gravity Zen

[App page](https://appshunter.io/ios/app/gravity-zen/id1602081846)

Observe small circles interacting with a central gravity field. Add numerous boxes to explore how they naturally settle into a stable arrangement. It's a simple yet captivating simulation.

**Highlights:** Gravity field simulation, Add multiple objects, Observe stable configurations, Interactive physics, Minimalist design

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Large tip | $2.99 | one-time |


### Party VU meter

[App page](https://appshunter.io/ios/app/party-vu-meter/id6475290015)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gravity Zen free?

Gravity Zen costs $0.99, and also offers in-app purchases.

### Is Party VU meter free?

Party VU meter is free to download, with no in-app purchases.

### Do Gravity Zen or Party VU meter have ads?

Party VU meter shows ads; Gravity Zen does not.

### Which is updated more often, Gravity Zen or Party VU meter?

Gravity Zen ships an update every 9 days, and Party VU meter every 2 weeks. Most recently, Gravity Zen was updated on November 7, 2026 and Party VU meter on November 8, 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.*