# 氢刻 vs 别鸽了 PigeOn

氢刻 and 别鸽了 PigeOn are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 氢刻 sells 8 one-off in-app purchases and 别鸽了 PigeOn sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 氢刻 | 别鸽了 PigeOn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ai/id1585104628/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 5 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [QingKe Tech Co., Ltd.](https://appshunter.io/developer/1584950202) | [妍 蔡](https://appshunter.io/developer/1854271728) |

## What reviewers say

### 氢刻

[App page](https://appshunter.io/ios/app/ai/id1585104628)

This tool helps you capture, organize, and recall information using a structured card system. It leverages AI to extract key points and generate study aids like flashcards and quizzes. Share and learn from community-created card sets for efficient knowledge acquisition.

**Highlights:** AI-powered note extraction, Flashcard creation and review, Scientific learning and recall methods, Structured card-based knowledge base, Content sharing community, Import from WeChat Read and Anki

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP of one month | $1.99 | one-time |
| 氢刻专业版-1个月 | $2.99 | one-time |
| VIP of one year | $12.99 | one-time |
| 氢刻专业版-1年 | $19.99 | one-time |
| VIP of three years | $29.99 | one-time |
| 氢刻专业版-3年 | $39.99 | one-time |
| Premium Lifetime | $69.99 | one-time |
| Pro Lifetime | $89.99 | one-time |


### 别鸽了 PigeOn

[App page](https://appshunter.io/ios/app/pigeon/id6759386480)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zixu Pro Monthly | $1.99 | per month |
| PigeOn  Yearly | $14.99 | per year |


## Frequently asked questions

### Is 氢刻 free?

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

### Is 别鸽了 PigeOn free?

别鸽了 PigeOn is free to download, with in-app purchases available.

### Do 氢刻 or 别鸽了 PigeOn have ads?

Neither 氢刻 nor 别鸽了 PigeOn shows ads.

### Which is updated more often, 氢刻 or 别鸽了 PigeOn?

氢刻 ships an update every 3 weeks, and 别鸽了 PigeOn every 3 weeks. Most recently, 氢刻 was updated on October 30, 2026 and 别鸽了 PigeOn on October 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.*