# SZ Calc vs 联塑管道智能制造MES

The clearest difference is in-app purchases: 联塑管道智能制造MES at none against SZ Calc's 4. 联塑管道智能制造MES also leads on iOS requirement (13.0 vs 16.0). SZ Calc's advantage is update cadence (every 5 weeks vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. SZ Calc sells 4 one-off in-app purchases. 联塑管道智能制造MES asks for nothing beyond the download.

SZ Calc ships an update every 5 weeks, 联塑管道智能制造MES every 7 months. The most recent releases landed on October 25, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | SZ Calc | 联塑管道智能制造MES |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 7 months |
| Size | 11 MB | 53 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [玉君 陈](https://appshunter.io/developer/1830854776) | [广东联塑科技实业有限公司](https://appshunter.io/developer/1464881401) |

## What reviewers say

### SZ Calc

[App page](https://appshunter.io/ios/app/sz-calc/id6757951650)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support the Developer | $0.99 | one-time |
| Support the Developer | $2.99 | one-time |
| Support the Developer | $4.99 | one-time |
| Support the Developer | $9.99 | one-time |


### 联塑管道智能制造MES

[App page](https://appshunter.io/ios/app/mes/id6759917228)

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

**In-app purchases:** none


## Frequently asked questions

### Is SZ Calc free?

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

### Is 联塑管道智能制造MES free?

联塑管道智能制造MES is free to download, with no in-app purchases.

### Do SZ Calc or 联塑管道智能制造MES have ads?

Neither SZ Calc nor 联塑管道智能制造MES shows ads.

### Which is updated more often, SZ Calc or 联塑管道智能制造MES?

SZ Calc ships an update every 5 weeks, and 联塑管道智能制造MES every 7 months. Most recently, SZ Calc was updated on October 25, 2026 and 联塑管道智能制造MES on October 13, 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.*