Comparison

Lek vs Book Creator

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

Head to head
About

Lek

This AI-powered writing assistant generates various types of content, from emails and essays to ad copy and lyrics. It simplifies writing tasks with an easy-to-use interface, offering a wide range of content generation options in multiple languages.

Highlights
  • AI content generation
  • Email and essay writing
  • Ad copy and SEO meta text creation
  • Grammar correction and rephrasing
  • Content summarization and expansion
  • Idea generation for copywriting
  • Lyrics and tagline creation
Features
Read full description

Lek ai is a writing assistant that writes content for you with artificail intelligence. With its robust features it can write almost anything for you from writing emails to writing lyrics, from writing SEO meta data to writing ad copies, blog sections, product descriptions and the list goes on. Content writers, authors, developers, students, entrepreneurs, artists, and anyone who writes can benefit from using this app to simplify and streamline their daily writing tasks. What's more, lek.ai is accessible to everyone in the world, since it can write in any language and is available in all regions. The user interface is easy-to-use, allowing users to generate high quality, useful, and effective content with just a few clicks. All you have to do is select a use case, enter some input, and hit "generate" to get the content you need. Here is the list of all the features of lek.ai: * Generate ideas for copywriting on various platforms (Twitter, Facebook, YouTube) * Create effective and relevant Google Ads * Stand out with unique Facebook Ads * Make YouTube videos more clickable with catchy titles * Generate YouTube video ideas * Optimize YouTube tags for more views * Improve YouTube descriptions for more engagement * Write SEO-friendly meta texts for websites or blog posts * Fix grammar mistakes and rephrase sentences for impact * Shorten or lengthen paragraphs for a better reading experience * Create outlines for copywriting * Write attention-grabbing headlines for Amazon Ads * Create SEO-friendly and eye-catching titles for Amazon products * Write bullet points that highlight main features of Amazon products * Write persuasive and informative product descriptions for Amazon products * Create a catchy tagline for your business * Organize to-do tasks * Find the best candidates by creating an effective job ad * Raise thought-provoking questions with Lek.ai. * Optimize the app for ASO * Write any formal or informal Emails * Write Emails for Promotion of your service or product * Write Sales Email * Write Welcome Email to your customers or clients * Write lyrics for any topic * Complete any lyrics [:mav: 3.0.3]

About

Book Creator

This AI-powered writing assistant offers comprehensive support for all your writing needs, from generating creative stories to drafting complex articles. It leverages advanced AI chat engines to provide guidance and assistance at every stage of the writing process.

Highlights
  • AI-powered writing engine
  • Assistance in every writing step
  • Handles diverse input types
  • Generates creative stories
  • Drafts articles on complex topics
  • Provides recommendations and advice
Features
Read full description

Writer's AI is a deeply powerful artificial intelligence writing engine. It offers a invaluable tools and processes to fulfill your needs. You can get assistance in every step of your writing. Powered by state-of-the-art artificial intelligence chat engines. This revolutionary app can handle any input you give to it. This can range from cooking recipes to a full fledged article about advanced science topics. Use the power of AI to handle your everyday tasks, ask questions, take recommendations and advices and more... Subscription service is required to use the app. Payment models for Writer's AI Subscription • Writer's AI Weekly: $2.99 per month, • Writer's AI Annually: $34.99 per year • Payment will be charged to iTunes Account at confirmation of purchase. • Account will be charged for renewal within 24-hours prior to the end of the current subscription period. • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. • Any unused portion of a free trial period will be forfeited when the user purchases a subscription to that publication. Terms of Use: https://hiappsco.wordpress.com/2022/05/11/procam-terms-of-use/ Privacy Policy: https://hiappsco.wordpress.com/2022/05/11/procam-privacy-policy%ef%bf%bc/

Screenshots

Lek4 screens
Book Creator4 screens

Verdict

The call

The clearest difference is review sentiment: Lek at 77% against Book Creator's 0%. Lek also leads on rating (4.6 vs 4.0) and monetization model (free with in-app purchases vs subscription). On price, ads and in-app purchases 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. Lek sells 10 in-app purchases, starting at $8.99 per month and Book Creator sells 8 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Lek holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 83 and 27 respectively. Written reviews point the same way: 77% of Lek's written reviews are positive against 0% of Book Creator's.

UpkeepUpdate frequency

Lek ships an update every 3 weeks, Book Creator every 5 weeks. Both last shipped on November 7, 2026.

Scorecard7 real differences · 3 level
Lek versus Book Creator: the parameters behind the verdict, then further details
ParameterLekBook Creator
PriceFreeFree
Rating4.6 (83 ratings) — better4.0 (27 ratings)
Positive reviews76.9% of reviews — better0.0% of reviews
Number of ratings83 — better27
Update frequencyEvery 3 weeks — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPod, Mac — betteriPhone
Requires iOS13.0 — better17.2
Further details — not scored
Size152 MB68 MB
Age rating12+9+
DeveloperAppTech Private LimitedKaan Yildiz

Customer experience

Lek

All ratings83 ratings
Positive92.8%
Neutral2.4%
Negative4.8%
Written reviews13 reviews
Positive76.9%
Neutral0.0%
Negative23.1%

Book Creator

All ratings27 ratings
Positive70.4%
Neutral7.4%
Negative22.2%
Written reviews8 reviews
Positive0.0%
Neutral25.0%
Negative75.0%

In-app purchases

10 purchases

Lek

Subscriptions10
  • AI Writing - Starter Monthly$8.991 Month
  • Pro - Monthly$14.991 Month
  • AI Writing - Pro Monthly$17.991 Month
Show 7 more
  • Max Monthly$24.991 Month
  • AI Writing Max - Monthly$29.991 Month
  • AI Writing - Starter Yearly$79.991 Year
  • Pro Yearly$119.991 Year
  • AI Writing Pro - Yearly$159.991 Year
  • Max Yearly$224.991 Year
  • AI Writing Max - Yearly$299.991 Year
8 purchases

Book Creator

Subscriptions7
  • Writer's AI Weekly$4.997 Days
  • Writer's AI Weekly$6.997 Days
  • Writer's AI Weekly3 Days trial$7.997 Days
Show 4 more
  • AI Writer Annual Final$29.991 Year
  • AI Writer Annual Return$34.991 Year
  • Writer's AI Annually$39.991 Year
  • Writer's AI Annually$44.991 Year
One-time1
  • Writer's AI Lifetime$99.99

Questions

Is Lek free?
Lek is free to download, with in-app purchases available.
Is Book Creator free?
Book Creator is free to download, with in-app purchases available.
Which has better reviews, Lek or Book Creator?
Lek is rated higher. Lek averages 4.6 out of 5 from 83 ratings, while Book Creator averages 4.0 from 27 ratings.
Do Lek or Book Creator have ads?
Neither Lek nor Book Creator shows ads.
Which is updated more often, Lek or Book Creator?
Lek ships an update every 3 weeks, and Book Creator every 5 weeks. Most recently, Lek was updated on November 7, 2026 and Book Creator on November 7, 2026.

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