# Duse vs 牛牛模考

The clearest difference is update cadence: 牛牛模考 at every 2 days against Duse's fortnightly. On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Duse sells 4 in-app purchases, starting at $1.99 per month and 牛牛模考 sells 5 in-app purchases, starting at $0.99 per 3 months. Whichever you choose, the download price is not the number that matters.

Duse ships an update fortnightly, 牛牛模考 every 2 days. The most recent releases landed on October 24, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Duse | 牛牛模考 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (18 ratings)](https://appshunter.io/ios/app/duse-habit-tracker/id6742254716/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | **88.9% of reviews** | 83.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Freemium | Freemium |
| Size | 28 MB | 87 MB |
| Requires iOS | 17.0 | **16.2** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Andy Arevalo](https://appshunter.io/developer/1853674132) | [诚志 张](https://appshunter.io/developer/1765833656) |

## What reviewers say

### Duse

[App page](https://appshunter.io/ios/app/duse-habit-tracker/id6742254716)

This app helps you build lasting habits and achieve your goals with a simple, customizable interface. Track good and bad habits with flexible frequencies, set personalized goals, and receive powerful reminders. Visualize your progress with insightful statistics and unlock achievements.

**Highlights:** Track good and bad habits, Flexible tracking frequencies (daily, weekly, monthly), Customizable goals and units, Multiple customizable reminders, Insightful statistics and progress visualization, Home and lock screen widgets, Achievements and notes

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $1.99 | per month |
| Yearly Premium (7-Day Trial) | $7.99 | per year |
| Yearly Premium | $7.99 | per year |
| Lifetime Access | $14.99 | one-time |


### 牛牛模考

[App page](https://appshunter.io/ios/app/id6743365984)

This app offers simulated exam environments with timers and sound effects to help users practice for various tests. Users can create custom exam templates and manage subjects with specific durations and workflows. It also includes productivity tools like clocks to enhance study efficiency.

**Highlights:** Simulated exam environments, Customizable exam templates, Subject and duration management, Exam process sound effects, Productivity clock tools, Timed practice sessions

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 季度订阅 | $0.99 | per 3 months |
| 月度订阅 | $0.99 | per month |
| 半年订阅 | $1.99 | per 6 months |
| 年度订阅 | $3.99 | per year |
| 永久订阅 | $0.99 | one-time |


## Frequently asked questions

### Is Duse free?

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

### Is 牛牛模考 free?

牛牛模考 is free to download, with in-app purchases available.

### Do Duse or 牛牛模考 have ads?

Neither Duse nor 牛牛模考 shows ads.

### Which is updated more often, Duse or 牛牛模考?

Duse ships an update fortnightly, and 牛牛模考 every 2 days. Most recently, Duse was updated on October 24, 2026 and 牛牛模考 on September 19, 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.*