# Lost Sword vs Chaos Zero Nightmare

The clearest difference is ads: Lost Sword at none against Chaos Zero Nightmare's shown. Lost Sword also leads on update cadence (every 10 days vs every 3 weeks) and review sentiment (76% vs 66%). Chaos Zero Nightmare's advantage is rating (4.9 vs 4.7) and chart position (#168 vs unranked). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Lost Sword sells 19 one-off in-app purchases and Chaos Zero Nightmare sells 45 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 4.7. That said, the two scores are not equally well evidenced: Chaos Zero Nightmare has 15K ratings behind it against 1.9K, so its average is the more settled of the two. Written reviews complicate that: 76% of Lost Sword's written reviews are positive against 66% of Chaos Zero Nightmare's, so the app with the better star average is not the one people write more warmly about.

Lost Sword ships an update every 10 days, Chaos Zero Nightmare every 3 weeks. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Lost Sword | Chaos Zero Nightmare |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.9K ratings)](https://appshunter.io/ios/app/lost-sword/id6482099823/reviews) | **[4.9 (15K ratings)](https://appshunter.io/ios/app/chaos-zero-nightmare/id6502326151/reviews)** |
| Number of ratings | 1.9K | **15K** |
| Positive reviews | **75.7% of reviews** | 66.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | **#168** |
| Size | 2.5 GB | 112 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Wemade Connect Co., Ltd.](https://appshunter.io/developer/454646971) | [Smilegate, Inc.](https://appshunter.io/developer/588277915) |

## What reviewers say

### Lost Sword

[App page](https://appshunter.io/ios/app/lost-sword/id6482099823)

Embark on an anime fantasy adventure in this idle RPG. Engage in action-packed battles, collect charming characters, and experience a compelling story with high-quality 2D illustrations and voice acting. Grow your party through endless AFK battles and explore various dungeons and raids.

**Highlights:** Isekai Adventure RPG, Action X Flirting with Girls, AFK RPG with Real-Time Battles, High-Quality 2D Anime Illustrations, Spectacular Skill Action, Realistic Character Voice Acting

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

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Powerful Duo Pack | $0.99 | one-time |
| Holy Sword Guidance Pack | $0.99 | one-time |
| Leon x240 | $1.99 | one-time |
| Chapter 3 Surpass Pack | $1.99 | one-time |
| Daily Growth Support | $3.99 | one-time |
| Blessing of Stonehenge | $3.99 | one-time |
| Leon x400 | $3.99 | one-time |
| Pendragon’s Legacy | $3.99 | one-time |
| Chapter 5 Surpass Pack | $3.99 | one-time |
| 4 Mysterious Paper | $6.79 | one-time |
| Chapter 8 Surpass Pack | $7.99 | one-time |
| Leon x800 | $7.99 | one-time |
| 6 Luxury Bunny Chips | $8.69 | one-time |
| 6 Mysterious Paper | $8.69 | one-time |
| 6 Leather Handcuffs | $8.69 | one-time |
| 6 Basement Key | $8.69 | one-time |
| Leon x2,400 | $24.99 | one-time |
| Leon x4,000 | $39.99 | one-time |
| Leon x8,000 | $79.99 | one-time |

**What reviewers like**

- 👍 Good looks
- 👍 Fantastic Anime RPG
- 👍 Great game
- 👍 Fun idle

**What reviewers complain about**

- 🔒 Can't play without sign in
- 🐛 You have been disconnected from the server
- 🐛 Connection & crash issues
- 🐛 Crash
- 🐛 It won't let me play it

**Reported bugs**

- You have been disconnected from the server
- Connection & crash issues
- Crash
- It won't let me play it

**Requested features**

- More fan service


### Chaos Zero Nightmare

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

**Currently charting:** #168 Top Grossing · 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 (45)**

| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 Lost Sword free?

Lost Sword 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, Lost Sword or Chaos Zero Nightmare?

Chaos Zero Nightmare is rated higher. Lost Sword averages 4.7 out of 5 from 1.9K ratings, while Chaos Zero Nightmare averages 4.9 from 15K ratings.

### Do Lost Sword or Chaos Zero Nightmare have ads?

Chaos Zero Nightmare shows ads; Lost Sword does not.

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

Lost Sword ships an update every 10 days, and Chaos Zero Nightmare every 3 weeks. Most recently, Lost Sword was updated on September 24, 2026 and Chaos Zero Nightmare on September 25, 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.*