# 1D Arcade vs HARM Invaders

The clearest difference is review sentiment: 1D Arcade at 50% against HARM Invaders's 0%. 1D Arcade also leads on rating (5.0 vs 3.0) and update cadence (every 9 months vs every 34 months). HARM Invaders's advantage is ads (none vs shown) and iOS requirement (8.0 vs 12). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. 1D Arcade sells 5 one-off in-app purchases and HARM Invaders sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

1D Arcade holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 50% of 1D Arcade's written reviews are positive against 0% of HARM Invaders's.

1D Arcade ships an update every 9 months, HARM Invaders every 34 months. The most recent releases landed on September 27, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 1D Arcade | HARM Invaders |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/1d-arcade/id638871602/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/harm-invaders/id966535230/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 months** | Every 34 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 55 MB | 158 MB |
| Requires iOS | 12 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Svante Segelson](https://appshunter.io/developer/594153369) | [QED Gaming PTY. Ltd](https://appshunter.io/developer/441029909) |

## What reviewers say

### 1D Arcade

[App page](https://appshunter.io/ios/app/1d-arcade/id638871602)

Engage in a minimalist, one-dimensional action game where you control a paddle. Your goal is to hit beneficial green objects and avoid harmful red ones before they cross the centerline. An interactive tutorial guides you through the mechanics.

**Highlights:** One-dimensional gameplay, Paddle control, Hit green, avoid red, Interactive tutorial, Immersive audio experience

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 Coins | $0.99 | one-time |
| 60 Coins | $1.99 | one-time |
| 60 New Coins | $1.99 | one-time |
| 100 Coins | $2.99 | one-time |
| 100 New Coins | $2.99 | one-time |


### HARM Invaders

[App page](https://appshunter.io/ios/app/harm-invaders/id966535230)

Command Earth's first space fighter to defend humanity from an alien threat originating from Mars. Engage in fast-paced 3D combat across the solar system, researching weapons and battling replicating alien machines.

**Highlights:** Real-time 3D graphics, Diverse enemy types, Dozens of weapons, Space ship 3D combat, Local & Global high-score tables, Rank system

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 500 Research Machine Credits | $0.99 | one-time |
| 500 Brain Power | $1.99 | one-time |
| 2000 Brain Power | $4.99 | one-time |
| 10000 Research Machine Credits | $9.99 | one-time |


## Frequently asked questions

### Is 1D Arcade free?

1D Arcade is free to download, with in-app purchases available.

### Is HARM Invaders free?

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

### Which has better reviews, 1D Arcade or HARM Invaders?

1D Arcade is rated higher. 1D Arcade averages 5.0 out of 5 from 3 ratings, while HARM Invaders averages 3.0 from 2 ratings.

### Do 1D Arcade or HARM Invaders have ads?

1D Arcade shows ads; HARM Invaders does not.

### Which is updated more often, 1D Arcade or HARM Invaders?

1D Arcade ships an update every 9 months, and HARM Invaders every 34 months. Most recently, 1D Arcade was updated on September 27, 2026 and HARM Invaders on October 2, 2026.

---

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