# Train Invasion vs Gravity Frontline

Train Invasion and Gravity Frontline are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | Train Invasion | Gravity Frontline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (5 ratings)](https://appshunter.io/ios/app/train-invasion/id6751881247/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | — |
| Monetization | Ad-supported | — |
| Size | 201 MB | 109 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Kiwert](https://appshunter.io/developer/1426743821) | [FreeS Games](https://appshunter.io/developer/435365746) |

## What reviewers say

### Train Invasion

[App page](https://appshunter.io/ios/app/train-invasion/id6751881247)

Defend a runaway train from relentless zombie hordes in this action-packed defense game. Upgrade your character with powerful perks and unique builds to survive increasingly challenging waves and deadly boss battles. Every run offers a new roguelite experience with stylized visuals and immersive gameplay.

**Highlights:** Dynamic zombie wave battles, Perk-based upgrade system, Roguelite progression, Stylized visuals, Train defense gameplay, Boss battles

**Features:** macOS Compatibility

**In-app purchases:** none


### Gravity Frontline

[App page](https://appshunter.io/ios/app/gravity-frontline/id6754205461)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Train Invasion free?

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

### Is Gravity Frontline free?

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

### Do Train Invasion or Gravity Frontline have ads?

Both Train Invasion and Gravity Frontline show ads.

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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.*