Comparison

AI ChatBot vs Open Book AI Chat

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

Head to head
About

AI ChatBot

This AI-powered assistant helps you chat smarter and faster with lifelike conversations. It offers features like automatic replies, image sharing, and brainstorming assistance, all within a private and secure interface.

Highlights
  • Lifelike AI conversations
  • Automatic replies
  • Customized answers
  • Image sharing
  • Brainstorming assistance
  • Private and secure
Features
Read full description

ChatBOT is your intelligent, AI-powered assistant for iOS, designed to help you chat smarter, faster, and more naturally — anytime, anywhere. REAL CONVERSATIONS, POWERED BY ADVANCED AI Enjoy lifelike conversations with your personal AI assistant. ChatBOT uses cutting-edge language technology to provide engaging and helpful responses to your questions and ideas. SMART FEATURES AT YOUR FINGERTIPS From quick automatic replies to customized answers and image sharing, ChatBOT makes every conversation feel personal and dynamic. Whether you need help brainstorming, organizing thoughts, or just chatting, it’s here for you. PRIVATE & SECURE Your privacy matters. ChatBOT uses encryption to help keep your conversations safe and secure. FAST. EASY. FUN. With a sleek, user-friendly design, you can jump right in and start chatting—no learning curve required. ChatBOT Pro is available for $19.99/year (price may vary by region or promotion). Payment is charged to your iTunes Account at confirmation of purchase. Subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Account is charged for renewal within 24 hours prior to the end of the current period. Manage subscriptions and turn off auto-renewal in iTunes Account Settings after purchase. Privacy Policy: https://londonappstudio.co.uk/privacy.html Terms of Use: https://londonappstudio.co.uk/terms.html

About

Open Book AI Chat

This AI chat application leverages advanced natural language processing to enhance communication and productivity. It facilitates efficient interactions with colleagues, clients, and friends for collaboration, business, or personal connections.

Highlights
  • Advanced natural language processing
  • Streamlined communication
  • Team collaboration
  • Client interaction
  • Personal messaging
Features
Read full description

Looking for an AI chat app that can simplify communication and boost productivity? Look no further than our cutting-edge chat app. With our app's advanced natural language processing capabilities, you can easily and efficiently communicate with colleagues, clients, and friends alike. Whether you're looking to collaborate with team members, close a deal with a client, or just catch up with a friend, our AI chat app is the perfect solution. Try it today and see the difference for yourself. Open Book AI comes with a free tier of AI usage that's limited. You may purchase an auto-renewing subscription through an In-App Purchase. (If you do not maintain a subscription you are limited in your features) • Auto-renewable subscription • Weekly ($3.99) duration with an initial 3 day free trial • Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase. Terms of Use: https://openbooktest.net/tos Privacy Policy: https://openbooktest.net/privacypolicy End User License Agreement https://openbooktest.net/eula

Screenshots

AI ChatBot4 screens
Open Book AI Chat4 screens

Verdict

The call

The clearest difference is rating: Open Book AI Chat at 5.0 against AI ChatBot's 4.6. Open Book AI Chat also leads on device support (5 vs 2). AI ChatBot's advantage is ratings volume (387 vs 2). On price, update cadence, 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. AI ChatBot sells 1 in-app purchase, starting at $19.99 per year and Open Book AI Chat sells 1 in-app purchase, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Open Book AI Chat holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: AI ChatBot has 387 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

AI ChatBot ships an update every 6 weeks, Open Book AI Chat every 2 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

Scorecard3 real differences · 7 level
AI ChatBot versus Open Book AI Chat: the parameters behind the verdict, then further details
ParameterAI ChatBotOpen Book AI Chat
PriceFreeFree
Rating4.6 (387 ratings)5.0 (2 ratings) — better
Positive reviews21.4% of reviews—
Number of ratings387 — better2
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, Mac, Apple TV, Apple Watch — better
Requires iOS15.0 — better16.2
Further details — not scored
Size27 MB54 MB
Age rating4+9+
DeveloperLondon App Studio LtdCat Bakery, LLC

Customer experience

AI ChatBot

All ratings387 ratings
Positive90.4%
Neutral2.6%
Negative7.0%
Written reviews14 reviews
Positive21.4%
Neutral7.1%
Negative71.4%

Open Book AI Chat

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

Bugs and requests

AI ChatBot

Reported bugs

6 issues
  • App always crashing
  • App crashes a lot
  • App crashes a lot when asked question
  • Lost chat history first during inline purchase
  • App crashed and the chat was lost again
Show 1 more
  • App crashes so much

Requested features

1 request
  • ChatGPT in Catalan Language

Open Book AI Chat

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

AI ChatBot

Subscriptions1
  • ChatBOT Pro$19.991 Year
1 purchases

Open Book AI Chat

Subscriptions1
  • Open Book AI T13 Days trial$3.997 Days

Questions

Is AI ChatBot free?
AI ChatBot is free to download, with in-app purchases available.
Is Open Book AI Chat free?
Open Book AI Chat is free to download, with in-app purchases available.
Which has better reviews, AI ChatBot or Open Book AI Chat?
Open Book AI Chat is rated higher. AI ChatBot averages 4.6 out of 5 from 387 ratings, while Open Book AI Chat averages 5.0 from 2 ratings.
Do AI ChatBot or Open Book AI Chat have ads?
Neither AI ChatBot nor Open Book AI Chat shows ads.
Which is updated more often, AI ChatBot or Open Book AI Chat?
AI ChatBot ships an update every 6 weeks, and Open Book AI Chat every 2 months. Most recently, AI ChatBot was updated on October 24, 2026 and Open Book AI Chat on October 22, 2026.

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