# Chat PRO AI Chatbot vs A2A Authenticator

The clearest difference is in-app purchases: A2A Authenticator at none against Chat PRO AI Chatbot's 2. A2A Authenticator also leads on ads (none vs shown) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Chat PRO AI Chatbot sells 2 in-app purchases, starting at $6.99 per 7 days. A2A Authenticator asks for nothing beyond the download.

## The numbers

| Metric | Chat PRO AI Chatbot | A2A Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (145 ratings)](https://appshunter.io/ios/app/chat-pro-ai-chatbot/id1659720931/reviews)** | — |
| Number of ratings | **145** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 39 MB | 27 MB |
| Requires iOS | 16.1 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Aliaksei Kuptsou](https://appshunter.io/developer/1562810290) | [Jupiter System & Solution](https://appshunter.io/developer/1397216911) |

## What reviewers say

### Chat PRO AI Chatbot

[App page](https://appshunter.io/ios/app/chat-pro-ai-chatbot/id1659720931)

Leverage advanced AI to generate unique and creative content, from essays and emails to social media posts and code. This tool provides personalized content creation in seconds, offering insights beyond simple search results.

**Highlights:** AI-powered content creation, Essay and text writing, Social media caption generation, Email drafting, Code correction, Personalized content generation

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChatGPT AI Unlimited Questions | $6.99 | per 7 days |
| GPT Unlimited Chat Questions | $6.99 | per 7 days |

**What reviewers like**

- 💡 Innovative AI tool for creative writing and content generation
- ✍️ Helpful for course descriptions and title generation
- 🎯 Useful for essay outlining and student assistance
- 💬 Ability to ask follow-up questions for clarification
- 🧠 Impressive AI capabilities for various topics

**What reviewers complain about**

- 💰 Extremely expensive pricing ($7.99-$10 per week / ~$32-$40 per month)
- 🐛 Frequent server overload errors and 'Too many requests' messages
- ❌ Poor quality responses and inaccurate information
- 📅 Outdated knowledge base (information from 2019-2021)
- 🚫 Aggressive upselling to PRO version immediately

**Reported bugs**

- Server overload errors preventing responses
- App crashes after 30 minutes to 1 hour of use
- Inconsistent language responses despite language settings
- Blocks users after 5-10 messages despite premium subscription
- Generates false information (deceased people listed as alive, wrong Oscar nominations)

**Requested features**

- One-time purchase option instead of subscription
- Monthly pricing instead of weekly billing
- Free trial without requiring credit card
- More detailed and comprehensive responses
- Better language consistency (English/Spanish/French)


### A2A Authenticator

[App page](https://appshunter.io/ios/app/a2a-authenticator/id6744716942)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chat PRO AI Chatbot free?

Chat PRO AI Chatbot is free to download, with in-app purchases available.

### Is A2A Authenticator free?

A2A Authenticator is free to download, with no in-app purchases.

### Do Chat PRO AI Chatbot or A2A Authenticator have ads?

Chat PRO AI Chatbot shows ads; A2A Authenticator does not.

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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.*