# 氢刻 vs PomoRing

The clearest difference is review sentiment: 氢刻 at 100% against PomoRing's 0%. 氢刻 also leads on price (Free vs $0.99) and iOS requirement (13.4 vs 16.0). PomoRing's advantage is in-app purchases (none vs 6). On update cadence, ads and device support there is nothing between them.

氢刻 is free to download; PomoRing costs $0.99 up front. 氢刻 sells 6 one-off in-app purchases. PomoRing asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 22, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | 氢刻 | PomoRing |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ai/id1585104628/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 22 MB | 3 MB |
| Requires iOS | **13.4** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [QingKe Tech Co., Ltd.](https://appshunter.io/developer/1584950202) | [远魁 黄](https://appshunter.io/developer/1884181435) |

## What reviewers say

### 氢刻

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

This tool helps you capture, organize, and recall information through a structured card system. It uses AI and spaced repetition techniques to enhance memory and learning. Share and import notes to build a personalized knowledge base.

**Highlights:** AI-powered note-taking, Spaced repetition learning, Card-based knowledge base, Content sharing community, Import notes from WeChat Read, Anki-style flashcards

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP of one month | $0.99 | one-time |
| 氢刻专业版-1个月 | $1.99 | one-time |
| VIP of one year | $9.99 | one-time |
| 氢刻专业版-1年 | $14.99 | one-time |
| VIP of three years | $24.99 | one-time |
| 氢刻专业版-3年 | $29.99 | one-time |


### PomoRing

[App page](https://appshunter.io/ios/app/pomoring/id6760386979)

This standalone Pomodoro timer for your wrist helps you stay focused with a beautiful, intuitive interface. It offers customizable work and break cycles, haptic alerts, and progress tracking. Seamlessly sync your focus sessions with HealthKit.

**Highlights:** Standalone Pomodoro timer for Apple Watch, Animated circular progress ring, Customizable focus and break durations, Haptic alerts for session transitions, Daily and weekly focus statistics, HealthKit integration for mindfulness tracking

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is 氢刻 free?

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

### Is PomoRing free?

PomoRing costs $0.99, with no in-app purchases.

### Do 氢刻 or PomoRing have ads?

Neither 氢刻 nor PomoRing shows ads.

### Which is updated more often, 氢刻 or PomoRing?

氢刻 ships an update every 3 weeks, and PomoRing every 3 weeks. Most recently, 氢刻 was updated on September 22, 2026 and PomoRing on September 25, 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.*