Comparison

AI 4.0 | Chatbot vs Second Brain

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

Head to head
About

AI 4.0 | Chatbot

This AI-powered assistant simulates human conversation using advanced natural language processing. It can understand and respond to a wide range of inquiries, offering quick and efficient assistance for tasks like information retrieval and customer service. The app is designed for seamless integration into various platforms.

Highlights
  • Simulates human conversation
  • Natural language processing
  • Machine learning techniques
  • Vast text data training
  • Information retrieval
  • Customer service support
  • Language translation
Features
Read full description

AI Assistant 4.0 is a computer program designed to simulate conversation with human users. It uses natural language processing and machine learning techniques to understand and respond to user inquiries in a way that mimics human communication. Chatbot is trained on a vast amount of text data, making it highly proficient in understanding and responding to a wide range of topics. This technology can be integrated into various platforms such as websites, mobile apps, and messaging services to provide users with quick and efficient assistance. It can also be used for tasks such as customer service, information retrieval, and language translation. The use of chatbot AI assistants is becoming increasingly popular as they can handle high volumes of interactions and provide 24/7 availability, making them a valuable tool for businesses and organizations. App requires a subscription to use. Payment will be charged to the account associated with your Apple ID when you confirm your purchase. Your subscription will automatically renew unless you cancel at least 24 hours before the end of the current period. If you don't cancel within that time, your account will be charged for renewal. You can manage your subscription by going to your account settings in the App Store after purchase. Privacy Policy: https://a1assistant.blogspot.com/2023/01/privacy-policy.html Terms: https://a1assistant.blogspot.com/2023/01/terms-of-use.html Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Second Brain

This AI chatbot uses GPT technology to generate creative content like stories and songs, answer questions, and provide entertainment. It offers a premium subscription for enhanced features and a free trial period.

Highlights
  • AI-powered writing assistance
  • Story and song generation
  • Question answering
  • Joke telling
  • GPT technology integration
Features
Read full description

Second Brain is a revolutionary AI chat bot powered by GPT Technology. It can write stories, songs, answer your questions, tell a joke and much more! Privacy Policy: https://sites.google.com/view/ai-app-privacy/home User Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

AI 4.0 | Chatbot4 screens
Second Brain4 screens

Verdict

The call

The clearest difference is monetization model: Second Brain at freemium against AI 4.0 | Chatbot's subscription. AI 4.0 | Chatbot's advantage is update cadence (every 10 days vs every 4 weeks) and device support (4 vs 1). 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. AI 4.0 | Chatbot sells 3 in-app purchases, starting at $6.99 per 7 days and Second Brain sells 3 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Second Brain holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 130 and 61 respectively.

UpkeepUpdate frequency

AI 4.0 | Chatbot ships an update every 10 days, Second Brain every 4 weeks. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
AI 4.0 | Chatbot versus Second Brain: the parameters behind the verdict, then further details
ParameterAI 4.0 | ChatbotSecond Brain
PriceFreeFree
Rating4.6 (130 ratings)4.8 (61 ratings) — better
Positive reviews36.4% of reviews—
Number of ratings130 — better61
Update frequencyEvery 10 days — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone
Requires iOS15 — better16.6
Further details — not scored
Size121 MB78 MB
Age rating17+17+
DeveloperCODEPAD YAZILIM VE DIJITAL HIZMETLER LIMITED SIRKETITairs Rzajevs

Customer experience

AI 4.0 | Chatbot

All ratings130 ratings
Positive89.2%
Neutral2.3%
Negative8.5%
Written reviews11 reviews
Positive36.4%
Neutral0.0%
Negative63.6%

Second Brain

All ratings61 ratings
Positive93.4%
Neutral1.6%
Negative4.9%

In-app purchases

3 purchases

AI 4.0 | Chatbot

Subscriptions3
  • Premium Weekly | Pro3 Days trial$6.997 Days
  • Monthly Premium | Pro$14.991 Month
  • Yearly Premium | Pro$39.991 Year
3 purchases

Second Brain

Subscriptions3
  • Premium for one Week3 Days trial$5.997 Days
  • Premium for one Month3 Days trial$9.991 Month
  • Premium for one Year3 Days trial$39.991 Year

Questions

Is AI 4.0 | Chatbot free?
AI 4.0 | Chatbot is free to download, with in-app purchases available.
Is Second Brain free?
Second Brain is free to download, with in-app purchases available.
Which has better reviews, AI 4.0 | Chatbot or Second Brain?
Second Brain is rated higher. AI 4.0 | Chatbot averages 4.6 out of 5 from 130 ratings, while Second Brain averages 4.8 from 61 ratings.
Do AI 4.0 | Chatbot or Second Brain have ads?
Neither AI 4.0 | Chatbot nor Second Brain shows ads.
Which is updated more often, AI 4.0 | Chatbot or Second Brain?
AI 4.0 | Chatbot ships an update every 10 days, and Second Brain every 4 weeks. Most recently, AI 4.0 | Chatbot was updated on October 21, 2026 and Second Brain on October 24, 2026.

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