# ChatBot Smart Assistant vs Knowledge Robo

The clearest difference is review sentiment: Knowledge Robo at 100% against ChatBot Smart Assistant's 0%. Knowledge Robo also leads on monetization model (free vs free with in-app purchases) and update cadence (weekly vs fortnightly). ChatBot Smart Assistant's advantage is rating (4.0 vs 3.0) and ratings volume (9 vs 2). On price, ads and in-app purchases there is nothing between them.

Both are free to download. ChatBot Smart Assistant sells 3 in-app purchases, starting at $1.99 per 7 days and Knowledge Robo sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ChatBot Smart Assistant holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 9 and 2 respectively. Written reviews complicate that: 0% of ChatBot Smart Assistant's written reviews are positive against 100% of Knowledge Robo's, so the app with the better star average is not the one people write more warmly about.

ChatBot Smart Assistant ships an update fortnightly, Knowledge Robo weekly. The most recent releases landed on August 27, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | ChatBot Smart Assistant | Knowledge Robo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (9 ratings)](https://appshunter.io/ios/app/chatbot-smart-assistant-evan/id6446467038/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/knowledge-robo-ai-chat/id6449212253/reviews) |
| Number of ratings | **9** | 2 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 23 MB | 67 MB |
| Requires iOS | 16.2 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Nicolo Stanciu](https://appshunter.io/developer/930855677) | [Shashi Gupta](https://appshunter.io/developer/1688140059) |

## What reviewers say

### ChatBot Smart Assistant

[App page](https://appshunter.io/ios/app/chatbot-smart-assistant-evan/id6446467038)

Engage in intelligent conversations with an AI companion powered by advanced speech synthesis and ChatGPT integration.  Transcribe your voice into text and enjoy context-aware dialogue for a personalized experience.

**Highlights:** Advanced speech synthesis, Voice transcription, ChatGPT integration, Context-aware conversations, Personalized voice and speed settings

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Evan AI Pro Weekly | $1.99 | per 7 days |
| Evan AI Pro Monthly | $2.99 | per month |
| Evan AI Pro Yearly | $22.99 | per year |


### Knowledge Robo

[App page](https://appshunter.io/ios/app/knowledge-robo-ai-chat/id6449212253)

This AI-powered assistant uses advanced models to answer questions, generate images, and assist with writing tasks. It supports multiple languages and offers organized conversations for a streamlined user experience.

**Highlights:** AI Chat with GPT and Gemini, AI Image Generation, Voice Input for AI Responses, Organized Conversations, Multi-language Support, Export and Share Conversations, AI Writing Assistance

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coins Basic | $0.99 | one-time |
| Coins Premium | $1.99 | one-time |


## Frequently asked questions

### Is ChatBot Smart Assistant free?

ChatBot Smart Assistant is free to download, with in-app purchases available.

### Is Knowledge Robo free?

Knowledge Robo is free to download, with in-app purchases available.

### Which has better reviews, ChatBot Smart Assistant or Knowledge Robo?

ChatBot Smart Assistant is rated higher. ChatBot Smart Assistant averages 4.0 out of 5 from 9 ratings, while Knowledge Robo averages 3.0 from 2 ratings.

### Do ChatBot Smart Assistant or Knowledge Robo have ads?

Neither ChatBot Smart Assistant nor Knowledge Robo shows ads.

### Which is updated more often, ChatBot Smart Assistant or Knowledge Robo?

ChatBot Smart Assistant ships an update fortnightly, and Knowledge Robo weekly. Most recently, ChatBot Smart Assistant was updated on August 27, 2026 and Knowledge Robo on September 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*