# Train Loop vs City Fortress

The clearest difference is update cadence: Train Loop at daily against City Fortress's every 4 days. 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.

Train Loop ships an update daily, City Fortress every 4 days. The most recent releases landed on October 25, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Train Loop | City Fortress |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 4 days |
| Monetization | — | Ad-supported |
| Size | 192 MB | 373 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [OkiGen Games](https://appshunter.io/developer/1551346306) | [FutureBright Technology Company Limited](https://appshunter.io/developer/715337595) |

## What reviewers say

### Train Loop

[App page](https://appshunter.io/ios/app/train-loop/id6738042046)

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

**In-app purchases:** none


### City Fortress

[App page](https://appshunter.io/ios/app/city-fortress/id6738672976)

Defend your base against zombie hordes in this fast-paced casual game. Strategically place towers, utilize random skills, and adapt to new challenges with roguelike elements. Experience a blend of tower defense and arcade action across urban-themed levels.

**Highlights:** Tower defense gameplay, Arcade action combat, Roguelike random skills, Zombie path control, Strategic tower placement, Urban map environments

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Train Loop free?

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

### Is City Fortress free?

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

### Do Train Loop or City Fortress have ads?

Both Train Loop and City Fortress show ads.

### Which is updated more often, Train Loop or City Fortress?

Train Loop ships an update daily, and City Fortress every 4 days. Most recently, Train Loop was updated on October 25, 2026 and City Fortress on October 19, 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.*