# 百思笔记 vs Hidden Camera Detector & Sweep

The clearest difference is update cadence: 百思笔记 at weekly against Hidden Camera Detector & Sweep's every 3 months. 百思笔记 also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. 百思笔记 sells 1 in-app purchase, starting at $0.99 per month and Hidden Camera Detector & Sweep sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

百思笔记 ships an update weekly, Hidden Camera Detector & Sweep every 3 months. The most recent releases landed on October 30, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 百思笔记 | Hidden Camera Detector & Sweep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai-best-note/id6746778545/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Monetization | Freemium | — |
| Size | 383 MB | 8 MB |
| Requires iOS | **15** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [智汇学海](https://appshunter.io/developer/1514896327) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### 百思笔记

[App page](https://appshunter.io/ios/app/ai-best-note/id6746778545)

This app acts as an AI knowledge operating system, transforming various forms of input like text, audio, and scans into interconnected, reusable knowledge units. It offers features for recording, understanding, organizing, and reusing information, with a focus on privacy and seamless integration.

**Highlights:** Multi-modal input (text, voice, audio, docs, images, scans, web), Real-time voice to text with speaker labeling, Simultaneous translation for 50+ languages, Document scanning with OCR and perspective correction, In-app browser for research and note-taking, Cloud synchronization across devices, Full-text search with word-level matching

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 基础会员-月付 | $0.99 | per month |


### Hidden Camera Detector & Sweep

[App page](https://appshunter.io/ios/app/hidden-camera-detector-and-sweep/id6759969775)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly Plan | $6.99 | per 7 days |
| Premium Yearly | $34.99 | per year |
| Lifetime | $69.99 | one-time |


## Frequently asked questions

### Is 百思笔记 free?

百思笔记 is free to download, with in-app purchases available.

### Is Hidden Camera Detector & Sweep free?

Hidden Camera Detector & Sweep is free to download, with in-app purchases available.

### Do 百思笔记 or Hidden Camera Detector & Sweep have ads?

Neither 百思笔记 nor Hidden Camera Detector & Sweep shows ads.

### Which is updated more often, 百思笔记 or Hidden Camera Detector & Sweep?

百思笔记 ships an update weekly, and Hidden Camera Detector & Sweep every 3 months. Most recently, 百思笔记 was updated on October 30, 2026 and Hidden Camera Detector & Sweep on November 7, 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.*