Comparison

MementoMori vs Aether Gazer

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

Head to head
About

MementoMori

Embark on an epic journey in a world shattered by calamity, where girls with extraordinary powers fight against darkness. Experience a rich story, stunning visuals, and a captivating soundtrack. Utilize strategic battles and an idle system to grow your characters and liberate the land.

Highlights
  • Epic story-driven narrative
  • Stunning Live2D animations
  • Idle System for offline progression
  • Strategic auto-battles
  • High-quality soundtrack and voice acting
  • Guild system for social play
  • Character and gear enhancement
Features
Read full description

“All roads lead to our ‘Goodbye.’” Boasting an epic soundtrack that can turn the world of gaming on its head, and some of the most stunning designs ever seen in a game, Bank of Innovation’s newest title, MementoMori, is finally here! Songs performed by many renowned artists enhance the rich world of MementoMori. *We recommend playing while wearing earphones or headphones. ◆ STORY: A tale of “justice” woven by girls whose fragile hearts verge on shattering... There are girls who many call “witches.” Although they themselves are ordinary, they can wield slightly extraordinary powers. However, when calamity spreads throughout the land, witches begin to be feared and detested. Before long, the Church of Longinus commenced what would be known as “The Witch Hunt.” “Witches are to blame for this calamity. If we kill them, then the calamity will vanish along with them!” Witches are executed one by one. But one day, as madness seizes control of the world, it is suddenly overrun by “Curses.” A country incinerated by hellfire. A kingdom consumed by crystals. An empire purged by the Tree of Life. Such are the woeful desires of those who are called “Witches of Qlipha.” Without any means to defend themselves, nation after nation falls into ruin, until finally— The fractured land is sent adrift high into the sky. Meanwhile, the people have yet to take notice. From within these girls cursed to be witches, there emanates glimmers of hope. In order to save their decimated world, these girls set forth liberating the land from darkness. For they believe that it is the right thing to do... ◆ GAME: ・Play utilizing both easy-to-use full auto-battles and high-level strategy! ・Behold stunning action-packed battles animated using Live2D! ・Harness the “Idle System” to gradually get stronger as the girls fight even while you’re away! ・Unlock tons of content as you advance the story! ・Discover infinite strategic possibilities by combining your wit with the girls’ magical powers! ・Enhance gear to precisely influence how the girls grow stronger! ・Communicate with your friends as you form the most powerful guild in the land! ◆ SOUND: The girls of MementoMori are burdened with cruel pasts and inevitable fates. ・Cry to “Laments,” which sing each girl’s emotions to life. ・Play accompanied with a high-quality soundtrack not bound to the limits of game music. The diversity of high-quality musical compositions heavily intertwines with the perilous world of MementoMori, providing a new and exciting gaming experience. ◆ CV/SONG: Illya (CV Kana Hanazawa) (Song by Daoko) Iris (CV Inori Minase) (Song by Hakubi) Rosalie (CV Sumire Uesaka) (Song by Sayaka Yamamoto) Soltina (CV Yoshino Nanjo) (Song by Koresawa) Amleth (CV Atsumi Tanezaki) (Song by Atarayo) Fenrir (CV Minami Takahashi) (Song by Kano) Freesia (CV Yui Horie) (Song by Sonoko Inoue) Belle (CV Yuu Asakawa) (Song by 96NEKO) Luke (CV Ami Koshimizu) (Song by Ayaka Hirahara) Carol (CV Hina Tachibana) (Song by kurokumo) ...and many more! *The above is the Japanese cast for the game. Voices can be changed from English to Japanese in the game’s settings. ◆ Official Website https://mememori-game.com/en/ ◆ Official Twitter Account (stay updated with the latest info) https://twitter.com/mementomori_EN ◆ Official Facebook Page (stay updated with the latest info) https://www.facebook.com/mementomoriEN ◆ Official YouTube Channel (watch special videos and Laments) https://www.youtube.com/c/MementoMori_global ------ Powered by Live2D

About

Aether Gazer

Engage in fast-paced combat within a sci-fi anime world where humanity's consciousness resides in an AI orbiting Earth. Battle viruses threatening this digital paradise by customizing characters, building combos, and strategically forming squads to save humanity's future.

Highlights
  • Fast-paced action combat
  • Character skill customization
  • Squad building and combos
  • Explore a dystopian world
  • Premium character design
  • Immersive soundtrack
Features
Read full description

In the future, constant war has eroded the livability of Earth, forcing humanity to escape by uploading their consciousnesses to Gaea, an AI orbiting the Earth. Human consciousness is divided into ten sephirah zones, each with its own unique culture and beliefs, that are all working together towards building the perfect civilization called Idealbild. However, underneath the surface and in the Source Layer, evil computer viruses called Visbanes lurk, bent on destroying humanity’s promised paradise. Use your knowledge of each character’s skillset during battle, use power-ups to build combos and customize your squad to unleash the power of Modifiers to save consciousness and reach the promised future of Idealbild. · Action-Packed Combat Requiring Fast-Paced Decision Making · Explore a Dystopia Filled with Lore and Loot · Customize Your Character's Skills and Seamlessly Change Your Fighting Style · Mix and Match Your Squad for Exciting Chained Combos and Stunning Performances · Premium Quality Character Design with Advanced NPR Rendering Technology · Immersive Soundtrack and Unique Voiceover for Every Character Aether Gazer Official Homepage: https://www.aethergazer.com/ Official Twitter Account: https://twitter.com/aethergazerEN Official Instagram Account: https://www.instagram.com/aethergazerofficial/ Official Facebook Page: https://www.facebook.com/AetherGazerOfficial/

Screenshots

MementoMori4 screens
Aether Gazer4 screens

Verdict

The call

The clearest difference is update cadence: MementoMori at fortnightly against Aether Gazer's every 4 months. MementoMori also leads on rating (4.7 vs 4.3) and review sentiment (68% vs 57%). On price, ads, 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. MementoMori sells 15 in-app purchases, starting at $0.99 per 7 days and Aether Gazer sells 11 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

MementoMori holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 4.8K and 1.3K respectively. Written reviews point the same way: 68% of MementoMori's written reviews are positive against 57% of Aether Gazer's.

UpkeepUpdate frequency

MementoMori ships an update fortnightly, Aether Gazer every 4 months. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
MementoMori versus Aether Gazer: the parameters behind the verdict, then further details
ParameterMementoMoriAether Gazer
PriceFreeFree
Rating4.7 (4.8K ratings) — better4.3 (1.3K ratings)
Positive reviews68.4% of reviews — better56.6% of reviews
Number of ratings4.8K — better1.3K
Update frequencyFortnightly — betterEvery 4 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.6
Further details — not scored
Size3.0 GB3.9 GB
Age rating12+12+
DeveloperBank of Innovation, IncHONG KONG YONGSHI NETWORK TECHNOLOGY CO., LIMITED

Customer experience

MementoMori

All ratings4,843 ratings
Positive93.4%
Neutral2.0%
Negative4.6%
Written reviews734 reviews
Positive68.4%
Neutral8.0%
Negative23.6%

Aether Gazer

All ratings1,263 ratings
Positive82.7%
Neutral4.5%
Negative12.8%
Written reviews343 reviews
Positive56.6%
Neutral13.4%
Negative30.0%

User reviews

MementoMori

From 4.8K App Store ratings

What we love

  • 💎 Beautiful art style and animations
  • 🎶 Excellent music and voice acting
  • 🌟 Unique and engaging character stories
  • 👍 Generous free-to-play model
  • 🕹️ Chill and relaxing gameplay loop

Room to improve

  • 🔒 Paywall for progression and character upgrades
  • 🕹️ Lack of meaningful player interaction
  • 🕰️ Slow progression for free-to-play players
  • 🤔 Confusing or unclear game mechanics
  • 🐛 Occasional crashes and bugs

Aether Gazer

From 1.3K App Store ratings

What we love

  • 🚀 Smooth gameplay
  • 👍 Generous free-to-play model
  • 🎨 Beautiful character designs
  • 🎮 Engaging combat mechanics
  • 💎 Rewarding gacha system

Room to improve

  • 🐛 Frequent crashes and bugs
  • 🔌 Performance issues on some devices
  • 🕹️ Lack of controller support
  • 📚 Confusing tutorial and UI
  • 🌐 Lack of Chinese language support

Bugs and requests

MementoMori

Reported bugs

3 issues
  • Crashes when accessing certain game modes
  • Inability to reply to private messages
  • Inconsistent character level cap increases

Requested features

5 requests
  • More story content and character interactions
  • Improved tutorial and onboarding process
  • Additional gameplay modes and activities
  • Ability to customize or change character outfits
  • Smoother performance and stability improvements

Aether Gazer

Reported bugs

5 issues
  • Game crashes during boss fights
  • Inability to progress past certain story missions
  • Graphical glitches and visual bugs
  • Login and connection issues
  • Gacha and purchase-related bugs

Requested features

5 requests
  • Add Chinese language support
  • Improve controller compatibility
  • Enhance tutorial and onboarding
  • Optimize performance for older devices
  • Introduce more endgame content

In-app purchases

15 purchases

MementoMori

Subscriptions2
  • Right of Covenant (1 Week)3 Days trial$0.997 Days
  • Right of Covenant3 Days trial$2.991 Month
One-time13
  • Daily Pack 1$0.99
  • Limited Weekly Pack 1$0.99
  • Diamond Pack A$0.99
Show 10 more
  • Ultra Sale Pack 72$0.99
  • Diamond Pack B$3.99
  • Daily Pack 2$3.99
  • Monthly Pack 6$5.99
  • Diamond Pack C$5.99
  • Monthly Boost$5.99
  • Diamond Pack D$8.99
  • Diamond Pack E$18.99
  • Achievement Pack 1$18.99
  • Diamond Pack G$74.99
11 purchases

Aether Gazer

One-time11
  • 60 Shifting Flowers$0.99
  • C-Obs$4.99
  • 490 Shifting Flowers$7.99
Show 8 more
  • Advanced Contract$9.99
  • $14.99 Pack$14.99
  • 990 Shifting Flowers$14.99
  • Outfit Voucher2$14.99
  • Acumen Contract$18.99
  • 1990 Shifting Flowers$29.99
  • 2990 Shifting Flowers$44.99
  • 6000 Shifting Flowers$89.99

Questions

Is MementoMori free?
MementoMori is free to download, with in-app purchases available.
Is Aether Gazer free?
Aether Gazer is free to download, with in-app purchases available.
Which has better reviews, MementoMori or Aether Gazer?
MementoMori is rated higher. MementoMori averages 4.7 out of 5 from 4.8K ratings, while Aether Gazer averages 4.3 from 1.3K ratings.
Do MementoMori or Aether Gazer have ads?
Both MementoMori and Aether Gazer show ads.
Which is updated more often, MementoMori or Aether Gazer?
MementoMori ships an update fortnightly, and Aether Gazer every 4 months. Most recently, MementoMori was updated on October 28, 2026 and Aether Gazer on October 25, 2026.

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