# SkyShield Operator vs PPO

The clearest difference is ratings volume: PPO at 3 against SkyShield Operator's 1. On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for SkyShield Operator against 5.0 for PPO. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

## The numbers

| Metric | SkyShield Operator | PPO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/skyshield-operator/id6775012428/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/ppo-defend-your-city/id6815021030/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 4 weeks |
| Monetization | Free | Free |
| Size | 4 MB | 117 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 12+ |
| Developer | [Patrick DeCarlo](https://appshunter.io/developer/6775012430) | [Tymur Horban](https://appshunter.io/developer/6795988337) |

## What reviewers say

### SkyShield Operator

[App page](https://appshunter.io/ios/app/skyshield-operator/id6775012428)

Command a fictional base-defense system, tracking drone waves and managing a powerful beam. Aim strategically, manage heat levels, and defend your base for as long as possible. Offers escalating challenges and adjustable difficulty.

**Highlights:** Drone wave tracking, SkyShield beam aiming, Heat management, Radar-style command map, Escalating difficulty, Multiple game modes

**In-app purchases:** none


### PPO

[App page](https://appshunter.io/ios/app/ppo-defend-your-city/id6815021030)

Defend a living city from aerial threats by strategically deploying air defense systems, managing resources, and rebuilding damaged areas. Adapt your strategy with time controls and dynamic environmental conditions for a unique challenge each game.

**Highlights:** Deploy and upgrade air defense systems, Manage city resources and repairs, Pause and control game speed, Procedurally generated city layouts, Day/night cycle and weather effects, Touch and mouse/trackpad controls

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SkyShield Operator free?

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

### Is PPO free?

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

### Which has better reviews, SkyShield Operator or PPO?

SkyShield Operator and PPO are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do SkyShield Operator or PPO have ads?

Neither SkyShield Operator nor PPO shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*