# Doom Simulator vs Grow Mergemon Masters

The clearest difference is review sentiment: Grow Mergemon Masters at 67% against Doom Simulator's 0%. Doom Simulator's advantage is update cadence (weekly vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Doom Simulator sells 8 one-off in-app purchases and Grow Mergemon Masters sells 12 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Doom Simulator ships an update weekly, Grow Mergemon Masters every 3 months. The most recent releases landed on October 21, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Doom Simulator | Grow Mergemon Masters |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/grow-mergemon-masters/id6453023612/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 150 MB | 171 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 9+ |
| Developer | [ICLOCKWORK PTE. LTD.](https://appshunter.io/developer/1633595140) | [gitae park](https://appshunter.io/developer/752748893) |

## What reviewers say

### Doom Simulator

[App page](https://appshunter.io/ios/app/doom-simulator/id1634328315)

Embark on a post-apocalyptic journey to find your missing sibling. Make choices that shape your story, customize your character, and battle enemies. Discover companions, pets, and mini-games in this adventure.

**Highlights:** Interactive storyline with player choices, Customizable character designs, Exciting boss battles, Diverse collection system, Buddy and pet system, Variety of mini-games

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| First Purchase | $0.99 | one-time |
| 20 Energy Cubes | $1.99 | one-time |
| 100 Energy Cubes | $4.99 | one-time |
| No Ads | $6.99 | one-time |
| Ad-blocking | $6.99 | one-time |
| Battle pass | $9.99 | one-time |
| 200 Energy Cubes | $9.99 | one-time |
| New Battle pass | $9.99 | one-time |


### Grow Mergemon Masters

[App page](https://appshunter.io/ios/app/grow-mergemon-masters/id6453023612)

Embark on an idle merge RPG adventure where you tame and evolve monsters. Strategically use their skills, collect trainer skins, and conquer dungeons and infinite towers. This game offers offline play for continuous monster training and battling.

**Highlights:** Merge and craft stronger monsters, Utilize diverse Mergemon skills strategically, Collect various trainer skins, Explore habitats and tame monsters, Conquer dungeons and collect runes, Challenge the infinite tower

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Beginer Pack | $2.99 | one-time |
| Level Pack | $4.99 | one-time |
| Level Pack 2 | $9.99 | one-time |
| STARTER PACK | $9.99 | one-time |
| ADS PACK | $9.99 | one-time |
| Light Dark Pack | $19.99 | one-time |
| Fire Pack | $19.99 | one-time |
| Leaf Pack | $19.99 | one-time |
| Ice Pack | $19.99 | one-time |
| Skin Pack | $19.99 | one-time |
| Cristal Pack | $19.99 | one-time |
| PREMIUM PACK | $49.99 | one-time |


## Frequently asked questions

### Is Doom Simulator free?

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

### Is Grow Mergemon Masters free?

Grow Mergemon Masters is free to download, with in-app purchases available.

### Do Doom Simulator or Grow Mergemon Masters have ads?

Both Doom Simulator and Grow Mergemon Masters show ads.

### Which is updated more often, Doom Simulator or Grow Mergemon Masters?

Doom Simulator ships an update weekly, and Grow Mergemon Masters every 3 months. Most recently, Doom Simulator was updated on October 21, 2026 and Grow Mergemon Masters on October 17, 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.*