# Pytheos vs Z0 Gravity

The clearest difference is update cadence: Z0 Gravity at monthly against Pytheos's every 2 months. Pytheos's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Pytheos ships an update every 2 months, Z0 Gravity monthly. The most recent releases landed on May 18, 2026 and August 25, 2026 respectively.

## The numbers

| Metric | Pytheos | Z0 Gravity |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free |
| Size | 42 MB | 55 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Quadralogy](https://appshunter.io/developer/1504703412) | [GLOBALSI](https://appshunter.io/developer/1536169914) |

## What reviewers say

### Pytheos

[App page](https://appshunter.io/ios/app/pytheos/id1510720341)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Pytheos free?

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

### Is Z0 Gravity free?

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

### Do Pytheos or Z0 Gravity have ads?

Neither Pytheos nor Z0 Gravity shows ads.

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

Pytheos ships an update every 2 months, and Z0 Gravity monthly. Most recently, Pytheos was updated on May 18, 2026 and Z0 Gravity on August 25, 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.*