# Chaos Zero Nightmare vs DIGIMON UP

The clearest difference is review sentiment: Chaos Zero Nightmare at 66% against DIGIMON UP's 35%. Chaos Zero Nightmare also leads on rating (4.9 vs 4.4) and chart position (#50 vs #185). DIGIMON UP's advantage is update cadence (every 6 days vs every 3 weeks). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Chaos Zero Nightmare sells 10 one-off in-app purchases and DIGIMON UP sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Chaos Zero Nightmare holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 16K and 9.8K respectively. Written reviews point the same way: 66% of Chaos Zero Nightmare's written reviews are positive against 35% of DIGIMON UP's.

Chaos Zero Nightmare ships an update every 3 weeks, DIGIMON UP every 6 days. Both last shipped on November 3, 2026.

## The numbers

| Metric | Chaos Zero Nightmare | DIGIMON UP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (16K ratings)](https://appshunter.io/ios/app/chaos-zero-nightmare/id6502326151/reviews)** | [4.4 (9.8K ratings)](https://appshunter.io/ios/app/digimon-up/id6756247787/reviews) |
| Number of ratings | **16K** | 9.8K |
| Positive reviews | **66.3% of reviews** | 34.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#50** | #185 |
| Size | 113 MB | 254 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Smilegate, Inc.](https://appshunter.io/developer/588277915) | [Bandai Namco Entertainment Inc.](https://appshunter.io/developer/352305770) |

## What reviewers say

### Chaos Zero Nightmare

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

**Currently charting:** #50 Top Grossing · Role Playing, #158 Top Free · Role Playing (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 (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coronomicon Monthly Package | $4.99 | one-time |
| Tactical Asset Monthly Supply | $4.99 | one-time |
| Nightmare Carnival Chest I | $14.99 | one-time |
| Crystal ×980 | $14.99 | 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 |
| Crystal ×3280 | $49.99 | one-time |
| Nightmare Carnival Chest II | $49.99 | one-time |
| Crystal ×6480 | $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


### DIGIMON UP

[App page](https://appshunter.io/ios/app/digimon-up/id6756247787)

**Currently charting:** #185 Top Grossing · Role Playing (US App Store)

Embark on a new adventure with Digimon in this mobile game. Train and evolve your digital monsters to become stronger. The game features in-app purchases to enhance gameplay and progression.

**Highlights:** New Digimon adventure game, Train and evolve digital monsters, Enhance gameplay with in-app purchases, Official Bandai Namco Entertainment title

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DigiDiamond A | $0.99 | one-time |
| Sale! DigiEmer. + Gatomon PJs | $0.99 | one-time |
| Sale! DigiEmer. + Agumon PJs | $2.99 | one-time |
| DigiDiamond Pass | $5.99 | one-time |
| Prem. Plan Digital Boost Pass | $5.99 | one-time |
| DigiDiamond B | $5.99 | one-time |
| Ad Skip Pass | $8.99 | one-time |
| DigiDiamond C | $14.99 | one-time |
| DigiDiamond D | $32.99 | one-time |
| DigiDiamond E | $64.99 | one-time |


## Frequently asked questions

### Is Chaos Zero Nightmare free?

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

### Is DIGIMON UP free?

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

### Which has better reviews, Chaos Zero Nightmare or DIGIMON UP?

Chaos Zero Nightmare is rated higher. Chaos Zero Nightmare averages 4.9 out of 5 from 16K ratings, while DIGIMON UP averages 4.4 from 9.8K ratings.

### Do Chaos Zero Nightmare or DIGIMON UP have ads?

Both Chaos Zero Nightmare and DIGIMON UP show ads.

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

Chaos Zero Nightmare ships an update every 3 weeks, and DIGIMON UP every 6 days. Most recently, Chaos Zero Nightmare was updated on November 3, 2026 and DIGIMON UP on November 3, 2026.

### Which is more popular, Chaos Zero Nightmare or DIGIMON UP?

Chaos Zero Nightmare currently peaks at #50 in the App Store charts, and DIGIMON UP at #185. 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.*