# Topo Maps 2 vs Catch SG Buses

The clearest difference is in-app purchases: Catch SG Buses at none against Topo Maps 2's 1. Topo Maps 2's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Topo Maps 2 sells 1 in-app purchase, starting at $4.99 per year. Catch SG Buses asks for nothing beyond the download.

Topo Maps 2 ships an update every 5 weeks, Catch SG Buses every 2 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Topo Maps 2 | Catch SG Buses |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (39 ratings)](https://appshunter.io/ios/app/topo-maps-2/id6453889012/reviews)** | — |
| Number of ratings | **39** | — |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 223 MB | 23 MB |
| Requires iOS | **17.2** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mappendix Limited](https://appshunter.io/developer/298854054) | [Aditya Arya](https://appshunter.io/developer/6777373132) |

## What reviewers say

### Topo Maps 2

[App page](https://appshunter.io/ios/app/topo-maps-2/id6453889012)

Access detailed topographic maps and satellite imagery for the US and Canada, usable offline. Record and share tracks, plan routes with 2D/3D visualization, and view geolocated photos. Offers hybrid map modes and offline search capabilities.

**Highlights:** Offline topographic maps, 2D and 3D map views, Track recording and sharing, Route planning and visualization, Hybrid map mode, Offline search, Geolocated photo display

**Features:** macOS Compatibility, Safari Extension, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Detailed Maps - 1 year | $4.99 | per year |


### Catch SG Buses

[App page](https://appshunter.io/ios/app/catch-sg-buses/id6777373130)

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

**In-app purchases:** none


## Frequently asked questions

### Is Topo Maps 2 free?

Topo Maps 2 is free to download, with in-app purchases available.

### Is Catch SG Buses free?

Catch SG Buses is free to download, with no in-app purchases.

### Do Topo Maps 2 or Catch SG Buses have ads?

Neither Topo Maps 2 nor Catch SG Buses shows ads.

### Which is updated more often, Topo Maps 2 or Catch SG Buses?

Topo Maps 2 ships an update every 5 weeks, and Catch SG Buses every 2 months. Most recently, Topo Maps 2 was updated on October 24, 2026 and Catch SG Buses on October 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*