# Idle Tokyo Train Loop vs Gravilink

The clearest difference is in-app purchases: Idle Tokyo Train Loop at none against Gravilink's 1. Idle Tokyo Train Loop also leads on update cadence (weekly vs fortnightly) and iOS requirement (15.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Gravilink sells 1 one-off in-app purchase. Idle Tokyo Train Loop asks for nothing beyond the download.

Idle Tokyo Train Loop ships an update weekly, Gravilink fortnightly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Idle Tokyo Train Loop | Gravilink |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (10 ratings)](https://appshunter.io/ios/app/idle-tokyo-train-loop/id6756996267/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Ad-supported | — |
| Size | 177 MB | 25 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [monois Inc.](https://appshunter.io/developer/498398223) | [TN-House](https://appshunter.io/developer/1886995196) |

## What reviewers say

### Idle Tokyo Train Loop

[App page](https://appshunter.io/ios/app/idle-tokyo-train-loop/id6756996267)

Build a circular railway around Tokyo by extending tracks, adding trains, and improving facilities. Watch your city grow and evolve from day to night in this relaxing simulation game.

**Highlights:** Build a circular railway, Add and upgrade trains, Extend tracks and connect stations, Dynamic day-night cycle, Relaxing watch-and-play gameplay, Unlock new train types and routes

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

**In-app purchases:** none


### Gravilink

[App page](https://appshunter.io/ios/app/gravilink-physics-line-puzzle/id6785056516)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium Access | $5.99 | one-time |


## Frequently asked questions

### Is Idle Tokyo Train Loop free?

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

### Is Gravilink free?

Gravilink is free to download, with in-app purchases available.

### Do Idle Tokyo Train Loop or Gravilink have ads?

Both Idle Tokyo Train Loop and Gravilink show ads.

### Which is updated more often, Idle Tokyo Train Loop or Gravilink?

Idle Tokyo Train Loop ships an update weekly, and Gravilink fortnightly. Most recently, Idle Tokyo Train Loop was updated on October 24, 2026 and Gravilink on October 28, 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.*