# Monocular Enemy vs HydrogenGame

The clearest difference is price: Monocular Enemy at Free against HydrogenGame's $2.99. HydrogenGame's advantage is ads (none vs shown) and update cadence (weekly vs every 15 months). On in-app purchases, device support and iOS requirement there is nothing between them.

Monocular Enemy is free to download; HydrogenGame costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Monocular Enemy ships an update every 15 months, HydrogenGame weekly. The most recent releases landed on October 17, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Monocular Enemy | HydrogenGame |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.6 (93 ratings)](https://appshunter.io/ios/app/monocular-enemy/id1452084545/reviews)** | — |
| Number of ratings | **93** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 15 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 44 MB | 89 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [YUSEI MIYOSHI](https://appshunter.io/developer/1086550692) | [Akihiro Kakoi](https://appshunter.io/developer/1738811085) |

## What reviewers say

### Monocular Enemy

[App page](https://appshunter.io/ios/app/monocular-enemy/id1452084545)

Embark on a retro 2D side-scrolling adventure as a robot fighting to save the world from monsters. Navigate traps, defeat enemies, and overcome bosses to restore peace. This free game offers a complete experience without waiting or billing elements, featuring auto-save functionality.

**Highlights:** 2D side-scrolling gameplay, Robot protagonist, Monster and boss battles, Trap avoidance, Auto-save functionality, Free to play

**Features:** macOS Compatibility

**In-app purchases:** none


### HydrogenGame

[App page](https://appshunter.io/ios/app/hydrogengame/id6480367458)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Monocular Enemy free?

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

### Is HydrogenGame free?

HydrogenGame costs $2.99, with no in-app purchases.

### Do Monocular Enemy or HydrogenGame have ads?

Monocular Enemy shows ads; HydrogenGame does not.

### Which is updated more often, Monocular Enemy or HydrogenGame?

Monocular Enemy ships an update every 15 months, and HydrogenGame weekly. Most recently, Monocular Enemy was updated on October 17, 2026 and HydrogenGame on October 5, 2026.

---

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