# Z0 Gravity vs Rassasy

The clearest difference is iOS requirement: Rassasy at 13.0 against Z0 Gravity's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Z0 Gravity ships an update monthly, Rassasy every 3 weeks. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Z0 Gravity | Rassasy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 55 MB | 69 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [GLOBALSI](https://appshunter.io/developer/1536169914) | [Vikncodes](https://appshunter.io/developer/1605753570) |

## What reviewers say

### Z0 Gravity

[App page](https://appshunter.io/ios/app/z0-gravity/id1536169912)

Manage project schedules, budgets, and resources with this accessible software. It offers real-time project visibility through a dashboard and facilitates team communication. Adaptable to various organizations, it centralizes project tools for success.

**Highlights:** Project scheduling, Budget management, Resource allocation, Team communication, Real-time dashboard, Risk management, Document management

**In-app purchases:** none


### Rassasy

[App page](https://appshunter.io/ios/app/rassasy/id1628057475)

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

**In-app purchases:** none


## Frequently asked questions

### Is Z0 Gravity free?

Z0 Gravity is free to download, with no in-app purchases.

### Is Rassasy free?

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

### Do Z0 Gravity or Rassasy have ads?

Neither Z0 Gravity nor Rassasy shows ads.

### Which is updated more often, Z0 Gravity or Rassasy?

Z0 Gravity ships an update monthly, and Rassasy every 3 weeks. Most recently, Z0 Gravity was updated on November 3, 2026 and Rassasy on November 7, 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.*