# 机器听诊大师 vs 优效日历

The clearest difference is in-app purchases: 机器听诊大师 at none against 优效日历's 4. 机器听诊大师 also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.0). 优效日历's advantage is update cadence (weekly vs every 4 months). On price and device support there is nothing between them.

Both are free to download. 优效日历 sells 4 in-app purchases, starting at $2.99 per month. 机器听诊大师 asks for nothing beyond the download.

机器听诊大师 ships an update every 4 months, 优效日历 weekly. The most recent releases landed on October 25, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 机器听诊大师 | 优效日历 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (6 ratings)](https://appshunter.io/ios/app/ai/id1621678880/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 39 MB | 76 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sucheon (Xiamen) Technologies Co.,Ltd.](https://appshunter.io/developer/1523948455) | [枭 游](https://appshunter.io/developer/1620285113) |

## What reviewers say

### 机器听诊大师

[App page](https://appshunter.io/ios/app/id1554822119)

**Features:** macOS Compatibility

**In-app purchases:** none


### 优效日历

[App page](https://appshunter.io/ios/app/ai/id1621678880)

This comprehensive calendar app helps manage your time and boost personal efficiency. It offers calendar queries, schedule planning, to-do lists, notes, habit tracking, and an AI assistant for various tasks. Stay organized across devices with cross-platform synchronization.

**Highlights:** AI-powered schedule and to-do creation, Integrated calendar with lunar and solar dates, Advanced to-do list management, Habit tracking with charts and heatmaps, Birthday and anniversary reminders, Cross-platform synchronization, Home screen widgets

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $2.99 | per month |
| 年度会员 | $14.99 | per year |
| 三年会员 | $29.99 | one-time |
| 终身会员 | $59.99 | one-time |


## Frequently asked questions

### Is 机器听诊大师 free?

机器听诊大师 is free to download, with no in-app purchases.

### Is 优效日历 free?

优效日历 is free to download, with in-app purchases available.

### Do 机器听诊大师 or 优效日历 have ads?

优效日历 shows ads; 机器听诊大师 does not.

### Which is updated more often, 机器听诊大师 or 优效日历?

机器听诊大师 ships an update every 4 months, and 优效日历 weekly. Most recently, 机器听诊大师 was updated on October 25, 2026 and 优效日历 on October 30, 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.*