Comparison

Little Grey Book vs Humanize Studio

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

Head to head
About

Little Grey Book

Enhance your Agatha Christie reading experience with a companion app. Track your progress, take notes with text scanning, and test your detective skills with a "Whodunnit Challenge." Explore the complete novel collection and personalize your reading journey.

Highlights
  • Whodunnit Challenge
  • Text scanning note-taking
  • Home screen widgets
  • Complete novel collection
  • Monthly read notifications
  • Personalization options
  • Book filtering by status
Features
Read full description

Discover the Ultimate Companion for Agatha Christie Enthusiasts! Embark on a thrilling literary adventure with Little Grey Book, the ultimate companion app for fans of Agatha Christie. Whether you're a seasoned sleuth or a newcomer to her captivating mysteries, this app is designed to enhance your reading experience like never before. Key Features: App special - Whodunit Challenge: Unleash your inner detective! As you read, select who you think the culprit is. Once you finish the book, see if you cracked the case. Can you match wits with Agatha Christie herself? Note-Taking Made Easy: Capture your thoughts, theories, favorite quotes, and memorable moments as you read. Use the new text scanning feature to quickly add notes directly from the page. The user-friendly note-taking feature lets you document your detective journey with ease. Handy Widgets: See your latest notes and keep track of your current read with convenient home screen widgets. Complete Novel Collection: Explore Agatha Christie's complete collection of novels, featuring their original covers for an authentic experience. Read Christie Notifications: Enjoy timely alerts for every new Read Christie theme and official monthly read. Personalization: Switch between UK and US book titles or even set your custom title. Choose from the uniquely crafted book icons or add one you prefer. Book Filters: Effortlessly organize your reading list. Filter books by status – unread, in progress, or completed – and maintain a clear overview of your journey through Christie's works. Why Little Grey Book? Little Grey Book is not just an app; it's a gateway into the world of intrigue and suspense. Dive deeper into each story, keep track of your progress, and challenge yourself to solve the mysteries alongside the Queen of Crime. Download Little Grey Book now and turn every reading session into an exciting detective adventure! Special thanks to friend of the app Johanna Draper Carlson for tracking down misidentified villains. ========================================================================== Icon attribution - Question icons created by Freepik - Flaticon (https://www.flaticon.com/free-icons/question)

About

Humanize Studio

This app rewrites AI-generated text to sound more natural and includes a detector to assess its human-like quality. It prioritizes user privacy by not storing any text on its servers. Offers a free tier with daily limits and a Pro version for extended use.

Highlights
  • Rewrites AI text to sound natural
  • Built-in AI detector with human/AI score
  • Privacy-focused, no text storage
  • Preserves facts, quotes, and proper nouns
  • Supports pasting, typing, camera scan, and uploads
  • Offers tone and strength customization
Features
Read full description

Humanize Studio rewrites AI-generated text so it reads naturally — and checks any text with a built-in AI detector, so you always know your score before you share. Private by design: your text is never stored on our servers. Most "humanizer" apps are a thin wrapper around a single model. Humanize Studio runs a 3-round rewrite — each pass takes a different approach and re-checks the result — then shows you a real detector score, not a vague promise. WHY HUMANIZE STUDIO • Reads naturally — turns stiff, robotic AI drafts into clear writing in your tone. • Detector built in — check any text and see a Human/AI score before you share. No guessing. • Private by design — your text is never stored on our servers. We keep only an anonymous metric, never your words. • Honest free tier — real free use every day, no bait-and-switch. • Fast & native — built for iPhone. Paste, scan with the camera, or upload in one tap. • Facts kept — figures, quotes, and proper nouns are preserved, and we warn you if anything drifts. HOW IT WORKS 1. Paste, type, scan, or upload your text. 2. Pick a tone and strength. 3. Get natural, human-sounding writing — plus an AI-detector score. WHO IT'S FOR Writers, students, professionals, marketers, and non-native English speakers who want AI drafts to read like a person wrote them — and want to check before they share. FREE & PRO Free every day, up to 500 characters per rewrite. Pro unlocks up to 50,000 characters, unlimited daily use, and the full detector. • Pro Weekly — $6.99/week, with a 3-day free trial • Pro Yearly — $59.99/year (best value) Subscriptions are billed to your Apple ID. A subscription renews automatically unless cancelled at least 24 hours before the current period ends. Manage or cancel anytime in your Apple ID settings; unused trial time is forfeited on upgrade. Terms: https://humanizestudio.site/terms Privacy: https://humanizestudio.site/privacy Questions? support@humanizestudio.site

Screenshots

Little Grey Book4 screens
Humanize Studio4 screens

Verdict

The call

The clearest difference is in-app purchases: Little Grey Book at none against Humanize Studio's 4. Humanize Studio's advantage is update cadence (weekly vs every 3 months). On price, rating, ratings volume and ads 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. Humanize Studio sells 4 in-app purchases, starting at $5.99 per 7 days. Little Grey Book asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Little Grey Book against 5.0 for Humanize Studio. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

Little Grey Book ships an update every 3 months, Humanize Studio weekly. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 7 level
Little Grey Book versus Humanize Studio: the parameters behind the verdict, then further details
ParameterLittle Grey BookHumanize Studio
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings2 — better1
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhoneiPhone
Requires iOS17.017.0
Further details — not scored
Size13 MB18 MB
Age rating9+4+
Developerniv ben-porath俊峰 罗

Customer experience

Little Grey Book

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Humanize Studio

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

In-app purchases

None

Little Grey Book

No in-app purchases

4 purchases

Humanize Studio

Subscriptions4
  • Humanize Studio Pro$5.997 Days
  • Humanize Studio Pro1 Month trial$6.991 Month
  • Humanize Studio Pro3 Days trial$6.997 Days
Show 1 more
  • Humanize Studio Pro1 Year trial$59.991 Year

Questions

Is Little Grey Book free?
Little Grey Book is free to download, with no in-app purchases.
Is Humanize Studio free?
Humanize Studio is free to download, with in-app purchases available.
Which has better reviews, Little Grey Book or Humanize Studio?
Little Grey Book and Humanize Studio are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do Little Grey Book or Humanize Studio have ads?
Neither Little Grey Book nor Humanize Studio shows ads.
Which is updated more often, Little Grey Book or Humanize Studio?
Little Grey Book ships an update every 3 months, and Humanize Studio weekly. Most recently, Little Grey Book was updated on October 4, 2026 and Humanize Studio on October 7, 2026.

Other comparisons