# 须臾 vs 小律

The clearest difference is ads: 小律 at none against 须臾's shown. 小律 also leads on rating (5.0 vs 4.7) and review sentiment (97% vs 84%). 须臾's advantage is ratings volume (456 vs 4) and iOS requirement (14.0 vs 16.1). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. 须臾 sells 1 one-off in-app purchase and 小律 sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

小律 holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: 须臾 has 456 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 84% of 须臾's written reviews are positive against 97% of 小律's.

须臾 ships an update every 3 days, 小律 every 4 days. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 须臾 | 小律 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (456 ratings)](https://appshunter.io/ios/app/id1384089839/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/id6448206193/reviews)** |
| Number of ratings | **456** | 4 |
| Positive reviews | 84.1% of reviews | **97.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 4 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 47 MB | 192 MB |
| Requires iOS | **14.0** | 16.1 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Xiaorichang Technology Co., Ltd.](https://appshunter.io/developer/1106886288) | [Maanshan Tuxiaonan Technology Co., Ltd.](https://appshunter.io/developer/1681706632) |

## What reviewers say

### 须臾

[App page](https://appshunter.io/ios/app/id1384089839)

This app helps you plan and track time spent on projects or skills, inspired by the 10,000-hour rule. It functions as both a time accumulator and a time diary, offering detailed statistical charts.

**Highlights:** Track time spent on projects/skills, Forward timer, Manual time entry, Rich statistical charts (radar, line), Time accumulator, Time diary

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 高级用户 | $3.99 | one-time |

**What reviewers like**

- 👍 Clean, simple, and intuitive interface design
- ⏱️ Effective time tracking and recording functionality
- 🎯 Helps users stay focused and motivated
- 📊 Useful statistics and analytics features
- 💰 No ads, ad-free experience

**What reviewers complain about**

- 🔊 Notification and timer sounds too loud and cannot be disabled
- 🐛 Frequent crashes and stability issues
- 🌍 Limited language support (primarily Chinese only)
- 📈 Statistics and analytics have bugs and display errors
- 💳 Premium features require payment; free version limited to 5 projects

**Reported bugs**

- iOS 26 update: clickable buttons (checkmark and X) become unresponsive without scrolling
- Week and day calendar misalignment after New Year
- Duplicate time entries in statistics when recording past dates
- Statistics chart Y-axis values incorrect for weekly view
- Recent time investment table displays wrong time units (minutes vs hours)

**Requested features**

- Add weekly and monthly planning goals (not just daily)
- Support for multiple simultaneous project timers
- Apple Watch app version for convenient wrist tracking
- iPad app version with optimized layout
- English language support and other language options


### 小律

[App page](https://appshunter.io/ios/app/id6448206193)

This app helps users improve time management and productivity through a cute and healing interface. It utilizes the Pomodoro Technique and offers features like video study logs, focus timers, and detailed statistics to combat procrastination and build self-discipline.

**Highlights:** Video study log and vlog creation, Focus timer with Pomodoro and countdown, Detailed time statistics and calendar view, Habit tracking and planning, Multi-device synchronization, Widgets and live activities

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 Pro | $0.99 | one-time |
| 半年会员 Pro | $4.99 | one-time |
| 年会员 Pro | $6.99 | one-time |


## Frequently asked questions

### Is 须臾 free?

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

### Is 小律 free?

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

### Which has better reviews, 须臾 or 小律?

小律 is rated higher. 须臾 averages 4.7 out of 5 from 456 ratings, while 小律 averages 5.0 from 4 ratings.

### Do 须臾 or 小律 have ads?

须臾 shows ads; 小律 does not.

### Which is updated more often, 须臾 or 小律?

须臾 ships an update every 3 days, and 小律 every 4 days. Most recently, 须臾 was updated on November 6, 2026 and 小律 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.*