# HM | DC vs SPACE

The clearest difference is review sentiment: SPACE at 100% against HM | DC's 70%. SPACE also leads on update cadence (every 3 weeks vs every 9 months). HM | DC's advantage is iOS requirement (10.0 vs 12.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HM | DC ships an update every 9 months, SPACE every 3 weeks. The most recent releases landed on June 3, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | HM | DC | SPACE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/space/id1636685960/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 70.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 68 MB | 125 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hornby Hobbies Ltd](https://appshunter.io/developer/870599697) | [Oh Baby LLC](https://appshunter.io/developer/1636685962) |

## What reviewers say

### HM | DC

[App page](https://appshunter.io/ios/app/hm-dc/id1561194436)

Control your model train DC layout wirelessly using Bluetooth. Manage multiple circuits, locomotive speed, braking, sounds, and accessories like signals and lights. Plan your track layouts with an integrated builder.

**Highlights:** Bluetooth low energy control, Independent control of 2 circuits, Locomotive speed and braking control, Loco sound and inertia features, Accessory control (signals, lights), Integrated track layout planner

**Features:** macOS Compatibility

**In-app purchases:** none


### SPACE

[App page](https://appshunter.io/ios/app/space/id1636685960)

Manage and monitor your smart safe remotely from anywhere in the world. Track activity, view live camera feeds, control user access, and receive alerts for environmental changes or attempted intrusions.

**Highlights:** Remote activity tracking, Live camera streaming, Customizable user profiles, Temporary access sharing, Remote lockdown mode, Climate sensor monitoring, Two-way talk functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HM | DC free?

HM | DC is free to download, with no in-app purchases.

### Is SPACE free?

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

### Do HM | DC or SPACE have ads?

Neither HM | DC nor SPACE shows ads.

### Which is updated more often, HM | DC or SPACE?

HM | DC ships an update every 9 months, and SPACE every 3 weeks. Most recently, HM | DC was updated on June 3, 2026 and SPACE on June 1, 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.*