# 四川科技兴村在线（专家版） vs SmartHearLd

The clearest difference is iOS requirement: SmartHearLd at 12.0 against 四川科技兴村在线（专家版）'s 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 四川科技兴村在线（专家版） | SmartHearLd |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | — | Free |
| Size | 6 MB | 48 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [四川省计算机研究院](https://appshunter.io/developer/556828426) | [上海合微智能科技有限公司](https://appshunter.io/developer/1121192106) |

## What reviewers say

### 四川科技兴村在线（专家版）

[App page](https://appshunter.io/ios/app/id1136507280)

**Features:** macOS Compatibility

**In-app purchases:** none


### SmartHearLd

[App page](https://appshunter.io/ios/app/smarthearld/id1582571220)

This app collects and records heart and lung sounds for scientific research. It features real-time algorithms, noise reduction, and cloud backup for audio data. Manage patient files and listening positions for detailed analysis.

**Highlights:** Heart and lung sound collection, Real-time algorithm processing, Environmental noise reduction, Cloud backup and local playback, Patient file management, Listening position tagging

**In-app purchases:** none


## Frequently asked questions

### Is 四川科技兴村在线（专家版） free?

四川科技兴村在线（专家版） is free to download, with no in-app purchases.

### Is SmartHearLd free?

SmartHearLd is free to download, with no in-app purchases.

### Do 四川科技兴村在线（专家版） or SmartHearLd have ads?

Neither 四川科技兴村在线（专家版） nor SmartHearLd shows ads.

### Which is updated more often, 四川科技兴村在线（专家版） or SmartHearLd?

四川科技兴村在线（专家版） ships an update every 4 months, and SmartHearLd every 4 months. Most recently, 四川科技兴村在线（专家版） was updated on October 26, 2026 and SmartHearLd 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.*