# Mars Quest vs Line Defense

The clearest difference is rating: Line Defense at 4.6 against Mars Quest's 4.0. Line Defense also leads on ads (none vs shown) and iOS requirement (8.1 vs 13.0). Mars Quest's advantage is ratings volume (91 vs 14). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Both are free to download. Mars Quest sells 5 one-off in-app purchases and Line Defense sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Line Defense holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Mars Quest has 91 ratings behind it against 14, so its average is the more settled of the two. Written reviews complicate that: 68% of Mars Quest's written reviews are positive against 63% of Line Defense's, so the app with the better star average is not the one people write more warmly about.

Mars Quest ships an update fortnightly, Line Defense monthly. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Mars Quest | Line Defense |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (91 ratings)](https://appshunter.io/ios/app/mars-quest-8-bit/id491304485/reviews) | **[4.6 (14 ratings)](https://appshunter.io/ios/app/line-defense/id1059443303/reviews)** |
| Number of ratings | **91** | 14 |
| Positive reviews | **68.5% of reviews** | 63.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 98 MB | 137 MB |
| Requires iOS | 13.0 | **8.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [First Class Media B.V.](https://appshunter.io/developer/1394094946) | [Legal Radiation Team](https://appshunter.io/developer/337265199) |

## What reviewers say

### Mars Quest

[App page](https://appshunter.io/ios/app/mars-quest-8-bit/id491304485)

Embark on a challenging retro adventure guiding an astronaut through alien-infested Martian levels. Experience nostalgic 8-bit graphics and music while avoiding obstacles and increasing speed. Compete with friends via Game Center.

**Highlights:** 8-bit retro music, Guide astronaut through levels, Avoid aliens and obstacles, Smart level progression, Increasing speed challenges, Game Center scores and achievements

**Features:** macOS Compatibility, Game Controller support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove advertising | $0.99 | one-time |
| 1 extra life | $0.99 | one-time |
| 5 extra lives | $1.99 | one-time |
| 10 extra lives | $2.99 | one-time |
| 25 extra lives | $4.99 | one-time |


### Line Defense

[App page](https://appshunter.io/ios/app/line-defense/id1059443303)

Defend Earth from an alien invasion with fast-paced, retro-inspired arcade action. Utilize simple one-finger controls to deploy defenses, collect upgrades, and battle bosses across diverse maps. Enjoy challenging gameplay with a variety of modes and achievements.

**Highlights:** One-finger swipe control, Unique power-ups and bosses, Collect crystals for upgrades, 20 colorful maps and Survival mode, Mini games with rewards, Game Center Leaderboards

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 50 Crystals | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |
| 125 Crystals | $1.99 | one-time |
| 250 Crystals | $2.99 | one-time |


## Frequently asked questions

### Is Mars Quest free?

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

### Is Line Defense free?

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

### Which has better reviews, Mars Quest or Line Defense?

Line Defense is rated higher. Mars Quest averages 4.0 out of 5 from 91 ratings, while Line Defense averages 4.6 from 14 ratings.

### Do Mars Quest or Line Defense have ads?

Mars Quest shows ads; Line Defense does not.

### Which is updated more often, Mars Quest or Line Defense?

Mars Quest ships an update fortnightly, and Line Defense monthly. Most recently, Mars Quest was updated on October 23, 2026 and Line Defense on October 21, 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.*