Comparison

StarSavior vs Chaos Zero Nightmare

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

StarSavior

Embark on a cosmic journey as a Captain, leading star-powered girls in a turn-based RPG. Train your team, forge bonds, and uncover a new story to inherit the legacy of a legendary hero. Experience visually stunning battles and an anime-inspired world.

Highlights
  • Lead star-powered girls
  • Turn-based combat
  • Cinematic skill animations
  • Deep character bonds
  • New cosmic story
  • Anime-style illustrations
  • 3D graphics
Features
Read full description

Long ago, the legendary Star Savior defeated the Void Star. Now, the Journey—a trial to inherit the great power he left behind—begins once more. Take on the Journey alongside star-powered girls and inherit the legacy of the Star Savior. A training RPG to raise a new shining light to illuminate the cosmos in an age where the stars are fading. StarSavior: Guide your Saviors through the star-kissed Journey. ■ A Journey with girls who wield the power of the stars You become the Captain of the Savior Party, tasked with leading the star-powered girls known as Saviors. Forge bonds with star-powered Saviors and lead them through the Journey—to inherit the legacy of the Star Savior. ■ Turn-based battles with cinematic skill animations Each Savior possesses unique abilities and traits. Combine their distinct skills and attributes with stunning visual effects to build the optimal party, and overcome formidable enemies through turn-based combat guided by your strategy as Captain. ■ The legacy of the Star Savior — and a new story Follow in the footsteps of the Star Savior and uncover a new tale. Experience a story where past and future, fate and bonds, intertwine. ■ Anime-style illustrations and 3D graphics The world of StarSavior comes alive through anime-style illustrations, paired with 3D visuals rendered in a distinct aesthetic. ■ Official Community ▶ Official Hompage: https://starsavior.com/intro ▶ Official YouTube: https://www.youtube.com/@StarSavior_EN ▶ Official X: https://x.com/StarSavior_EN ■ Recommended Specifications iOS 15 / RAM 8GB or higher ■ Optional Permissions - Notifications: Required to receive promotional and informational notifications. - Photos/Media/Files: Required to save screenshots.

About

Chaos Zero Nightmare

Embark on a dark fantasy RPG adventure where your choices shape the narrative and gameplay. Collect unique cards, develop strategies, and experience a visually stunning world with fully voiced characters. Every playthrough offers a distinct journey through a cosmic disaster.

Highlights
  • Dark fantasy narrative
  • Choice-driven RPG mechanics
  • Unique card collection
  • Evolving 'Save Data'
  • Gorgeous 2D illustrations
  • Fully voiced characters
  • Branching story paths
Features
Read full description

Zero Out All Despair Smilegate's new title, "Chaos Zero Nightmare," is now open! Board the SS Nightmare now! Chaos. A cosmic disaster that struck without warning. "Chaos," a black fog that consumes planets, distorting their environment and lifeforms. The beginning, or the end, of every story. [The Blue Pot], a Chaos located on Earth, the birthplace of humanity. There have been reports of unidentifiable creatures being discovered. And for some reason, a strange phenomenon that couldn't—no, shouldn't—be happening to the Captain is occurring. ▶ A World Drenched in Darkness, A Story Etched in Memory Dive into a vast and haunting dark fantasy narrative! Crushing stress, collapsing agents... and yet, the mission continues. Break through the encroaching crisis and immerse yourself in a brutally vivid dark fantasy experience. ▶ A New Kind of RPG, Rewritten with Every Choice Aim through the agents' eyes and feel the weight of combat at your fingertips! Unique cards, branching choices, and evolving "Save Data" shaped by your journey through the Chaos. Every run is unique. Build your own strategy and master the ever-changing battlefield. ▶ Characters That Dazzle the Eyes and Steal the Heart Gorgeous 2D illustrations and striking animations make every moment a visual delight! Fully voiced by top-tier voice actors, each scene draws you deeper into the story. Join a cast of unforgettable characters in battle and beyond, and cherish every moment of your journey together! ※ How to Manage Permissions After allowing access to permissions, you can reset or turn off them as follows. - Device Settings > Privacy & Security > Select the App > Allow or Don't Allow Permissions ⁜⁜Stay up to date with the latest news on Chaos Zero Nightmare! ⁜⁜ Brand Page: https://chaoszeronightmare.onstove.com/ Official Community: https://page.onstove.com/chaoszeronightmare/en Official YouTube: https://www.youtube.com/@ChaosZeroNightmare_EN Official X: https://x.com/CZN_Official_EN

Screenshots

StarSavior4 screens
Chaos Zero Nightmare4 screens

Verdict

The call

The clearest difference is ads: StarSavior at none against Chaos Zero Nightmare's shown. Chaos Zero Nightmare's advantage is rating (4.9 vs 4.6) and ratings volume (16K vs 798). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Chaos Zero Nightmare holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Chaos Zero Nightmare has 16K ratings behind it against 798, so its average is the more settled of the two. Written reviews point the same way: 51% of StarSavior's written reviews are positive against 66% of Chaos Zero Nightmare's.

UpkeepUpdate frequency

StarSavior ships an update fortnightly, Chaos Zero Nightmare every 3 weeks. Both last shipped on November 12, 2026.

Scorecard5 real differences · 6 level
StarSavior versus Chaos Zero Nightmare: the parameters behind the verdict, then further details
ParameterStarSaviorChaos Zero Nightmare
PriceFreeFree
Rating4.6 (798 ratings)4.9 (16K ratings) — better
Positive reviews50.7% of reviews66.5% of reviews — better
Number of ratings79816K — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#56#14 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size440 MB114 MB
Age rating12+12+
DeveloperStudio B Side Co., LtdSmilegate, Inc.

Customer experience

StarSavior

All ratings778 ratings
Positive88.0%
Neutral2.6%
Negative9.4%
Written reviews223 reviews
Positive50.7%
Neutral12.6%
Negative36.8%

Chaos Zero Nightmare

All ratings15,627 ratings
Positive97.2%
Neutral0.7%
Negative2.0%
Written reviews991 reviews
Positive66.5%
Neutral8.0%
Negative25.5%

Bugs and requests

StarSavior

Not enough reviews yet to summarise bugs or requests.

Chaos Zero Nightmare

Reported bugs

2 issues
  • Banned IP Issues
  • Missing Files and Inability to Load

Requested features

3 requests
  • English Dubbed Version
  • More Male Characters
  • Flexible Character Setup

In-app purchases

10 purchases

StarSavior

One-time10
  • [Welcome] Savior Observation Pack$0.99
  • [Welcome] Featured Observation Pack$0.99
  • [Launch] Arcana Observation Pack$0.99
Show 7 more
  • CounterSide Featured Observe Pack I$1.99
  • Daily Starlight Essence Package$3.99
  • 30-Day Stellagem Supply$4.99
  • 30-Day Willpower Supply$4.99
  • Lisette First Buy Special Offer$14.99
  • Operation Breakthrough Pass Vol.1$19.99
  • Scarlet's Super Package$21.99
10 purchases

Chaos Zero Nightmare

One-time10
  • Crystal ×300$4.99
  • Coronomicon Monthly Package$4.99
  • Tactical Asset Monthly Supply$4.99
Show 7 more
  • Special Data$9.99
  • Crystal ×980$14.99
  • Regular Rescue Operation II$14.99
  • Crystal ×1980$29.99
  • Royal Level Up Package$29.99
  • Crystal ×3280$49.99
  • Crystal ×6480$99.99

Questions

Is StarSavior free?
StarSavior 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, StarSavior or Chaos Zero Nightmare?
Chaos Zero Nightmare is rated higher. StarSavior averages 4.6 out of 5 from 798 ratings, while Chaos Zero Nightmare averages 4.9 from 16K ratings.
Do StarSavior or Chaos Zero Nightmare have ads?
Chaos Zero Nightmare shows ads; StarSavior does not.
Which is updated more often, StarSavior or Chaos Zero Nightmare?
StarSavior ships an update fortnightly, and Chaos Zero Nightmare every 3 weeks. Most recently, StarSavior was updated on November 12, 2026 and Chaos Zero Nightmare on November 12, 2026.
Which is more popular, StarSavior or Chaos Zero Nightmare?
StarSavior currently peaks at #56 in the App Store charts, and Chaos Zero Nightmare at #14. Chart position reflects recent download velocity rather than total install base.

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