# GoSG vs MRT Map

The clearest difference is ads: MRT Map at none against GoSG's shown. GoSG's advantage is update cadence (weekly vs monthly) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. GoSG sells 1 one-off in-app purchase and MRT Map sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

GoSG ships an update weekly, MRT Map monthly. The most recent releases landed on October 10, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | GoSG | MRT Map |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Monthly |
| Size | 75 MB | 10 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DOITECH INTERNATIONAL](https://appshunter.io/developer/427535859) | [33 YAGA PTE. LTD.](https://appshunter.io/developer/1536277523) |

## What reviewers say

### GoSG

[App page](https://appshunter.io/ios/app/gosg/id1669051305)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ad | $1.99 | one-time |


### MRT Map

[App page](https://appshunter.io/ios/app/mrt-map/id6479568532)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sponsor | $0.99 | one-time |
| Sponsor a bit of tidy sum | $2.99 | one-time |
| Sponsor a lot | $6.99 | one-time |
| Sponsor VIP | $12.99 | one-time |


## Frequently asked questions

### Is GoSG free?

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

### Is MRT Map free?

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

### Do GoSG or MRT Map have ads?

GoSG shows ads; MRT Map does not.

### Which is updated more often, GoSG or MRT Map?

GoSG ships an update weekly, and MRT Map monthly. Most recently, GoSG was updated on October 10, 2026 and MRT Map on October 4, 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.*