# Kai AI vs TopicFlow

The clearest difference is ads: TopicFlow at none against Kai AI's shown. TopicFlow also leads on update cadence (every 9 days vs every 4 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Kai AI sells 7 in-app purchases, starting at $0.99 per 7 days and TopicFlow sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Kai AI ships an update every 4 months, TopicFlow every 9 days. The most recent releases landed on October 5, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Kai AI | TopicFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/topicflow-ai-notes/id6765620478/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 97 MB | 67 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PARENTALPRO APPS BILISIM HIZMETLERI VE TICARET LIMITED SIRKETI](https://appshunter.io/developer/1723978734) | [亦君 潘](https://appshunter.io/developer/1889920920) |

## What reviewers say

### Kai AI

[App page](https://appshunter.io/ios/app/kai-ai-chatbot-and-assistant/id6740135283)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Premium Lite | $0.99 | per 7 days |
| AI Premium Weekly | $4.99 | per 7 days |
| AI Premium | $9.99 | per month |
| 10000 Credits | $9.99 | one-time |
| 20000 Credits | $17.99 | one-time |
| 30000 Credits | $24.99 | one-time |
| 50000 Credits | $39.99 | one-time |


### TopicFlow

[App page](https://appshunter.io/ios/app/topicflow-ai-notes/id6765620478)

This app transforms AI conversations into structured, reusable notes, plans, and summaries. It allows users to branch discussions for focused follow-ups and capture key ideas before they are lost. Organize your AI-generated content locally and export it when ready.

**Highlights:** Transform AI chats into reusable notes, Branch conversations for focused follow-ups, Capture and organize key ideas, Refocus AI discussions without re-prompting, Export and share selected content, Local topic history organization, Connect own AI provider keys

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TopicFlow Monthly Subscription | $4.99 | per month |
| TopicFlow Yearly Subscription | $29.99 | per year |
| TopicFlow Lifetime Access | $69.99 | one-time |


## Frequently asked questions

### Is Kai AI free?

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

### Is TopicFlow free?

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

### Do Kai AI or TopicFlow have ads?

Kai AI shows ads; TopicFlow does not.

### Which is updated more often, Kai AI or TopicFlow?

Kai AI ships an update every 4 months, and TopicFlow every 9 days. Most recently, Kai AI was updated on October 5, 2026 and TopicFlow on September 28, 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.*