# MONGIL vs Chaos Zero Nightmare

The clearest difference is ads: MONGIL at none against Chaos Zero Nightmare's shown. Chaos Zero Nightmare's advantage is chart position (#9 vs #183) and ratings volume (15K vs 4K). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. MONGIL sells 21 in-app purchases, starting at $6.99 per month and Chaos Zero Nightmare sells 51 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for MONGIL against 4.9 for Chaos Zero Nightmare. Both are backed by a comparable volume of ratings — 4K and 15K respectively. Written reviews split almost evenly too, at 67% and 66% positive.

MONGIL ships an update monthly, Chaos Zero Nightmare every 3 weeks. Both last shipped on October 23, 2026.

## The numbers

| Metric | MONGIL | Chaos Zero Nightmare |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4K ratings)](https://appshunter.io/ios/app/mongil-star-dive/id6483252725/reviews) | **[4.9 (15K ratings)](https://appshunter.io/ios/app/chaos-zero-nightmare/id6502326151/reviews)** |
| Number of ratings | 4K | **15K** |
| Positive reviews | **66.7% of reviews** | 66.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #183 | **#9** |
| Size | 502 MB | 113 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +12 | 12+ |
| Developer | [Netmarble Corporation](https://appshunter.io/developer/930364579) | [Smilegate, Inc.](https://appshunter.io/developer/588277915) |

## What reviewers say

### MONGIL

[App page](https://appshunter.io/ios/app/mongil-star-dive/id6483252725)

**Currently charting:** #183 Top Grossing · Action (US App Store)

Embark on an enchanting adventure in a world filled with diverse creatures. Collect and train adorable monsters, then engage in exhilarating tag-team battles using their unique skills. Explore a vast world and uncover your destiny at your own pace.

**Highlights:** Monster collecting and taming, Triple tag-team action battles, Real-time character switching, Unique monster abilities, Story-driven exploration, Play at your own pace

**Features:** Game Controller support

**In-app purchases (21)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Morning Star's Pledge | $6.99 | per month |
| Special offer1 | $0.99 | one-time |
| Special offer3 | $2.99 | one-time |
| Special offer4 | $3.99 | one-time |
| Special offer7 | $6.99 | one-time |
| Special offer8 | $7.99 | one-time |
| Special offer10 | $9.99 | one-time |
| Special offer13 | $12.99 | one-time |
| Special offer15 | $14.99 | one-time |
| Special offer17 | $16.99 | one-time |
| Special offer20 | $19.99 | one-time |
| Special offer22 | $21.99 | one-time |
| Special offer24 | $23.99 | one-time |
| Special offer25 | $24.99 | one-time |
| Special offer29 | $28.99 | one-time |
| Special offer30 | $29.99 | one-time |
| Special offer36 | $35.99 | one-time |
| Special offer40 | $39.99 | one-time |
| Special offer42 | $41.99 | one-time |
| Special offer50 | $49.99 | one-time |
| Special offer56 | $79.99 | one-time |


### Chaos Zero Nightmare

[App page](https://appshunter.io/ios/app/chaos-zero-nightmare/id6502326151)

**Currently charting:** #9 Top Grossing · Role Playing, #75 Top Free · Role Playing, #82 Top Grossing · Games (US App Store)

Embark on a dark fantasy RPG adventure where your choices shape the narrative and gameplay. Battle cosmic horrors with unique cards and evolving strategies. Experience a visually stunning world with fully voiced characters.

**Highlights:** Dark fantasy narrative, Choice-driven RPG mechanics, Unique card-based combat, Evolving gameplay with branching choices, Gorgeous 2D illustrations, Fully voiced characters

**Features:** macOS Compatibility

**In-app purchases (51)**

| Purchase | Price | Billing |
| --- | --- | --- |
| New Captain Support Kit I | $0.99 | one-time |
| New Captain Support Kit II | $4.99 | one-time |
| Coronomicon Monthly Package | $4.99 | one-time |
| Half-Anniversary Ticket | $4.99 | one-time |
| Tactical Asset Monthly Supply | $4.99 | one-time |
| Agent Growth Kit | $4.99 | one-time |
| Aether Supply Kit | $4.99 | one-time |
| Angel on the White Sands | $7.99 | one-time |
| Gentle Ripples on the Night Sea | $7.99 | one-time |
| Crimson Yearning Within the Waves | $7.99 | one-time |
| Youth Under the Sun | $7.99 | one-time |
| Special Data | $9.99 | one-time |
| Partner Promotion Kit | $9.99 | one-time |
| Nightmare Carnival Chest I | $14.99 | one-time |
| Imp's Mischief I | $14.99 | one-time |
| Covert Exchange I | $14.99 | one-time |
| Scent of Summer I | $14.99 | one-time |
| Legacy of Will I | $14.99 | one-time |
| Galaxy Melody I | $14.99 | one-time |
| Emergency Rescue Operation II | $14.99 | one-time |
| Crystal ×980 | $14.99 | one-time |
| Regular Rescue Operation II | $14.99 | one-time |
| Golden Nebula Package I | $14.99 | one-time |
| SS Nightmare Security Upgrade I | $14.99 | one-time |
| Budding Seed of Karmic Fire I | $14.99 | one-time |
| Zero Data | $19.99 | one-time |
| Golden Glow Beneath the Night Sky | $29.99 | one-time |
| Crystal ×1980 | $29.99 | one-time |
| Royal Level Up Package | $29.99 | one-time |
| Golden Nebula Package II | $29.99 | one-time |
| Sweet Confession Gift | $29.99 | one-time |
| Galactic Disaster 3rd Supply Kit II | $29.99 | one-time |
| Emergency Rescue Operation III | $29.99 | one-time |
| Crystal ×3280 | $49.99 | one-time |
| Nightmare Carnival Chest II | $49.99 | one-time |
| Imp's Mischief II | $49.99 | one-time |
| Covert Exchange II | $49.99 | one-time |
| Scent of Summer II | $49.99 | one-time |
| Legacy of Will II | $49.99 | one-time |
| Galaxy Melody Ⅱ | $49.99 | one-time |
| SS Nightmare Security Upgrade II | $49.99 | one-time |
| Silver Winter Star Package I | $49.99 | one-time |
| Galactic Disaster Support Kit I | $49.99 | one-time |
| Large Scale Rescue Operation I | $49.99 | one-time |
| Nightmare Carnival Chest III | $99.99 | one-time |
| Imp's Mischief III | $99.99 | one-time |
| Covert Exchange Ⅲ | $99.99 | one-time |
| Scent of Summer III | $99.99 | one-time |
| Galaxy Melody Ⅲ | $99.99 | one-time |
| Crystal ×6480 | $99.99 | one-time |
| Golden Nebula Package Ⅳ | $99.99 | one-time |

**What reviewers like**

- 🚀 Amazing, Incredible, Gorgeous, Uniquely Compelling
- 👍 Fun, Refreshing, Engaging Gameplay
- 💎 Solid Story, Animation, and Voice Acting
- 🎨 Beautiful Character Designs and Visuals

**What reviewers complain about**

- 🐛 Connection Issues, Login Problems, and Crashes
- 💰 Gacha Rates are Low, Grindy Progression
- ⏱️ Lengthy, Tedious, and Time-Consuming Runs

**Reported bugs**

- Banned IP Issues
- Missing Files and Inability to Load

**Requested features**

- English Dubbed Version
- More Male Characters
- Flexible Character Setup


## Frequently asked questions

### Is MONGIL free?

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

### Is Chaos Zero Nightmare free?

Chaos Zero Nightmare is free to download, with in-app purchases available.

### Which has better reviews, MONGIL or Chaos Zero Nightmare?

Chaos Zero Nightmare is rated higher. MONGIL averages 4.8 out of 5 from 4K ratings, while Chaos Zero Nightmare averages 4.9 from 15K ratings.

### Do MONGIL or Chaos Zero Nightmare have ads?

Chaos Zero Nightmare shows ads; MONGIL does not.

### Which is updated more often, MONGIL or Chaos Zero Nightmare?

MONGIL ships an update monthly, and Chaos Zero Nightmare every 3 weeks. Most recently, MONGIL was updated on October 23, 2026 and Chaos Zero Nightmare on October 23, 2026.

### Which is more popular, MONGIL or Chaos Zero Nightmare?

MONGIL currently peaks at #183 in the App Store charts, and Chaos Zero Nightmare at #9. Chart position reflects recent download velocity rather than total install base.

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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.*