# Dynamo vs Chat AI

The clearest difference is in-app purchases: Dynamo at none against Chat AI's 12. Dynamo also leads on iOS requirement (12.0 vs 15). Chat AI's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Chat AI sells 12 in-app purchases, starting at $4.99 per 7 days. Dynamo asks for nothing beyond the download.

Dynamo ships an update every 2 months, Chat AI every 2 weeks. The most recent releases landed on December 12, 2025 and October 22, 2026 respectively.

## The numbers

| Metric | Dynamo | Chat AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (1.1K ratings)](https://appshunter.io/ios/app/chat-ai-ask-chatbot-answers/id6446177789/reviews)** |
| Number of ratings | — | **1.1K** |
| Positive reviews | — | 72.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Subscription |
| Size | 42 MB | 217 MB |
| Requires iOS | **12.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KHELPDESK TECHNOLOGY LTDA](https://appshunter.io/developer/1346693189) | [Lutech-DN](https://appshunter.io/developer/1700646669) |

## What reviewers say

### Dynamo

[App page](https://appshunter.io/ios/app/dynamo/id1630865890)

**Features:** macOS Compatibility

**In-app purchases:** none


### Chat AI

[App page](https://appshunter.io/ios/app/chat-ai-ask-chatbot-answers/id6446177789)

This AI-powered assistant helps with writing, image generation, PDF analysis, and understanding video content. It offers tools for grammar checking, rewriting, social media posts, and coding assistance, boosting productivity and creativity.

**Highlights:** AI Writing Assistant, Text-to-Image Generation, PDF Summarization & Rewriting, YouTube Video Analysis, Grammar & Spelling Correction, Social Media Post Creator, Code Writing & Checking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $4.99 | per 7 days |
| Ask AI 1 Week | $6.99 | per 7 days |
| Ask AI Weekly Premium | $6.99 | per 7 days |
| Ask AI Weekly Trial Plan | $6.99 | per 7 days |
| Ask AI Weekly Plan | $6.99 | per 7 days |
| Ask AI Monthly Plan | $15.99 | per month |
| 1 Monthly | $15.99 | per month |
| Ask AI 1 Year | $19.99 | per year |
| 1 Year | $39.99 | per year |
| Ask AI Yearly Premium | $39.99 | per year |
| Ask AI Yearly Plan | $39.99 | per year |
| Lifetime | $49.99 | one-time |

**What reviewers like**

- 👍 Helpful for writing and summarizing
- 🚀 Instant response time
- 🤖 Excellent AI capabilities
- 💡 Versatile and adaptable
- 🤩 Amazing app, very useful

**What reviewers complain about**

- 🐛 App not working/crashing
- 🤔 Frequent errors/glitches
- 💰 Subscription/payment issues
- 🤷‍♀️ Doesn't understand basic commands

**Reported bugs**

- App stops working after a few months
- Subscription not transferring to new device
- Perpetual 'thinking' state, no response

**Requested features**

- Add landscape mode for iPad
- Increase number of free questions per day
- Improve error handling and stability


## Frequently asked questions

### Is Dynamo free?

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

### Is Chat AI free?

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

### Do Dynamo or Chat AI have ads?

Neither Dynamo nor Chat AI shows ads.

### Which is updated more often, Dynamo or Chat AI?

Dynamo ships an update every 2 months, and Chat AI every 2 weeks. Most recently, Dynamo was updated on December 12, 2025 and Chat AI on October 22, 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.*