Comparison

AIノベル vs Kaidan

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

Head to head
About

AIノベル

This app uses AI and natural language processing to generate unique novels based on given themes. Experience surprising plot twists and natural writing styles created by advanced AI, offering a novel reading experience.

Highlights
  • AI-generated novels
  • Natural language processing technology
  • Surprising plot twists
  • Daily updated stories
  • New reading experiences
Features
Read full description

◆人口知能(AI)が織りなす創造の世界◆ 自然言語処理技術(GPT)を用いて、与えられたテーマに沿って生成された小説を多数掲載。 プロの作家が手がけた小説とは異なり、GPTの科学的な手法によって生み出された物語は、自然な文体と意外な展開で読者を驚かせ、心を鷲掴みにすることでしょう。 物語の展開やキャラクターの心情描写に至るまで、圧倒的なクオリティーで作り出された小説の数々。 あなたもGPTノベルの世界に浸り、AIが紡ぎ出す不思議な物語の世界を体験してみてください。 生成されたストーリーは、伝統的な作家が手がけた小説とは異なる、新しい読書体験を提供します。 自然言語処理技術を駆使して、膨大なデータから自動的にストーリーを生成するため、従来の小説では考えられなかったようなアイデアや展開が可能になります。 AIが常に学習を続け、生成される小説も日々改善されています。 つまり、読者はいつでも新しい作品を楽しめるばかりか、それぞれの作品がクオリティの高いものであることを期待できます。 全ての点で、生成された小説は革新的で魅力的です。 そのため、往来の小説に飽き飽きしてしまった方や、新しい読書体験を求める方にもお勧めです。 小説は毎日更新されます。 日々の習慣としてアプリを開き、新しい物語と出会ってください。

About

Kaidan

Experience bite-sized J-Horror stories that fit your smartphone. Each tale unfolds in about a minute, leaving you with lingering questions and a sense of unease. Explore digital horror, urban legends, and more in a variety of immersive reading modes.

Highlights
  • One-minute J-Horror stories
  • Digital horror and urban legends
  • Classic and Cinema reading modes
  • 10 hand-curated languages
  • Daily new story drip
  • Rewarded video for story endings
Features
Read full description

What if your phone started collecting photos you never took? What if a second camera app appeared on your device that nobody installed? What if someone read your messages before you sent them? Kaidan is a short-form J-Horror reading app that reimagines Japan's centuries-old ghost-story tradition for the smartphone generation. Each story can be read in about one minute and ends on an unresolved detail that lingers long after the final line. 【Flagship Series: Everyday Doors】 Tagged — your phone collects photos of you in places you have never been. Camera 2 — a second camera app appears that nobody installed. The Other Mother — the school remembers your second child, but you only have one. The 13th Floor — your building doesn't have one. Seen — someone reads your messages before you send them. 【Five Categories】 • Digital Horror — social media, notifications, and the internet after dark • Everyday Disturbances — reality shifting one degree at a time • Urban Legends — stories the city refuses to forget • Unsolved Mysteries — unanswered questions and missing pieces • Japanese Kaidan — the tradition itself 【The Reading Experience】 • Read in about one minute • Original J-Horror stories • Classic Mode for uninterrupted reading • Cinema Mode for immersive vertical storytelling • Switch modes instantly with a single tap 【The Truth Ritual】 Every story ends with a question. The truth waits behind a single rewarded video. The first few Truths are available without unlocking. 【Daily Drip】 A growing library of original horror stories. New stories arrive regularly, with fresh tales appearing throughout the launch period and beyond. 【10 Hand-Curated Languages】 English, Japanese, Korean, Simplified Chinese, Traditional Chinese, Spanish, French, Portuguese, Vietnamese, and Thai. Every translation is adapted to feel natural within its own language and horror culture. Free to read. No subscriptions. No in-app purchases. Just one minute, one story, and one lingering fear.

Screenshots

AIノベル4 screens
Kaidan4 screens

Verdict

The call

The clearest difference is review sentiment: Kaidan at 100% against AIノベル's 25%. Kaidan also leads on update cadence (every 3 weeks vs every 10 months). AIノベル's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

AIノベル ships an update every 10 months, Kaidan every 3 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
AIノベル versus Kaidan: the parameters behind the verdict, then further details
ParameterAIノベルKaidan
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews25.0% of reviews100.0% of reviews — better
Number of ratings—1 — better
Update frequencyEvery 10 monthsEvery 3 weeks — better
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supportedAd-supported
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size105 MB18 MB
Age rating4+12+
DeveloperRedinC Co.,Ltd.Ito Bussan LLC

Customer experience

AIノベル

Written reviews4 reviews
Positive25.0%
Neutral25.0%
Negative50.0%

Kaidan

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

AIノベル

No in-app purchases

None

Kaidan

No in-app purchases

Questions

Is AIノベル free?
AIノベル is free to download, with no in-app purchases.
Is Kaidan free?
Kaidan is free to download, with no in-app purchases.
Do AIノベル or Kaidan have ads?
Both AIノベル and Kaidan show ads.
Which is updated more often, AIノベル or Kaidan?
AIノベル ships an update every 10 months, and Kaidan every 3 weeks. Most recently, AIノベル was updated on November 3, 2026 and Kaidan on November 5, 2026.

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