# RobotVSAlien vs Mine Driller

The clearest difference is in-app purchases: Mine Driller at none against RobotVSAlien's 1. RobotVSAlien's advantage is iOS requirement (7.0 vs 12.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. RobotVSAlien sells 1 one-off in-app purchase. Mine Driller asks for nothing beyond the download.

RobotVSAlien ships an update every 2 weeks, Mine Driller every 9 days. The most recent releases landed on October 21, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | RobotVSAlien | Mine Driller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/robotvsalien/id863067072/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 55 MB | 147 MB |
| Requires iOS | **7.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Akihiro Fujiwara](https://appshunter.io/developer/721031264) | [PIONE](https://appshunter.io/developer/1125428540) |

## What reviewers say

### RobotVSAlien

[App page](https://appshunter.io/ios/app/robotvsalien/id863067072)

Defend against alien invaders using a growing army of robots. This casual defense game allows players to upgrade and promote their units to increase their strength. Design your own giant robot and repel the alien threat.

**Highlights:** Casual defense gameplay, Unit promotion and upgrading, Design giant robots, Repel alien invaders, Unique robot and alien designs

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads and Privilege granting | $0.99 | one-time |


### Mine Driller

[App page](https://appshunter.io/ios/app/mine-driller-merge-drill/id6467621002)

Embark on a mining adventure, forging powerful equipment by extracting minerals. Merge drills to create stronger ones, upgrade your mining power, and discover hidden gifts for enhanced efficiency. Empower your miners with increased power for faster operations.

**Highlights:** Extract minerals, Merge drills for upgrades, Upgrade drill power, Discover hidden gifts, Combine miners and drills, Enhance mining prowess

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

**In-app purchases:** none


## Frequently asked questions

### Is RobotVSAlien free?

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

### Is Mine Driller free?

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

### Do RobotVSAlien or Mine Driller have ads?

Neither RobotVSAlien nor Mine Driller shows ads.

### Which is updated more often, RobotVSAlien or Mine Driller?

RobotVSAlien ships an update every 2 weeks, and Mine Driller every 9 days. Most recently, RobotVSAlien was updated on October 21, 2026 and Mine Driller on October 9, 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.*