# PCB (Personal Client Book) vs TopicFlow

The clearest difference is in-app purchases: PCB (Personal Client Book) at none against TopicFlow's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. TopicFlow sells 3 in-app purchases, starting at $4.99 per month. PCB (Personal Client Book) asks for nothing beyond the download.

PCB (Personal Client Book) ships an update every 2 weeks, TopicFlow every 9 days. The most recent releases landed on October 17, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | PCB (Personal Client Book) | 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | — | Freemium |
| Size | 38 MB | 67 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ALEKSANDR SOROKIN](https://appshunter.io/developer/1878698696) | [亦君 潘](https://appshunter.io/developer/1889920920) |

## What reviewers say

### PCB (Personal Client Book)

[App page](https://appshunter.io/ios/app/pcb-personal-client-book/id6759455134)

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

**In-app purchases:** none


### 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 PCB (Personal Client Book) free?

PCB (Personal Client Book) is free to download, with no in-app purchases.

### Is TopicFlow free?

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

### Do PCB (Personal Client Book) or TopicFlow have ads?

Neither PCB (Personal Client Book) nor TopicFlow shows ads.

### Which is updated more often, PCB (Personal Client Book) or TopicFlow?

PCB (Personal Client Book) ships an update every 2 weeks, and TopicFlow every 9 days. Most recently, PCB (Personal Client Book) was updated on October 17, 2026 and TopicFlow on October 14, 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.*