# Stack Invasion vs Train Defence

The clearest difference is update cadence: Stack Invasion at every 3 days against Train Defence's weekly. 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.

Stack Invasion ships an update every 3 days, Train Defence weekly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Stack Invasion | Train Defence |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (9 ratings)](https://appshunter.io/ios/app/train-defence/id6754323589/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 40.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | — | Ad-supported |
| Size | 160 MB | 154 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 9+ |
| Developer | [Dipayon Debnath Dip](https://appshunter.io/developer/1566993708) | [SOZAP](https://appshunter.io/developer/952456051) |

## What reviewers say

### Stack Invasion

[App page](https://appshunter.io/ios/app/stack-invasion/id6753060371)

**Features:** macOS Compatibility

**In-app purchases:** none


### Train Defence

[App page](https://appshunter.io/ios/app/train-defence/id6754323589)

Command an armored train in a post-apocalyptic desert war. Upgrade wagons, mount weapons, and blast through enemy convoys and massive bosses to survive. Rule the wasteland with your rolling fortress.

**Highlights:** Build and upgrade war train, Mount devastating weapons, Face massive boss fights, Smash through barriers, Battle raiders, Rule the wasteland

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

**In-app purchases:** none


## Frequently asked questions

### Is Stack Invasion free?

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

### Is Train Defence free?

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

### Do Stack Invasion or Train Defence have ads?

Both Stack Invasion and Train Defence show ads.

### Which is updated more often, Stack Invasion or Train Defence?

Stack Invasion ships an update every 3 days, and Train Defence weekly. Most recently, Stack Invasion was updated on October 30, 2026 and Train Defence on November 5, 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.*