# HMI云监控 vs OmniCalc

The clearest difference is update cadence: OmniCalc at every 3 days against HMI云监控's every 35 months. HMI云监控's advantage is iOS requirement (12.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

HMI云监控 ships an update every 35 months, OmniCalc every 3 days. The most recent releases landed on October 27, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | HMI云监控 | OmniCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/omnicalc-calculator-and-notes/id6760615662/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 3 days** |
| Monetization | — | Free |
| Size | 59 MB | 4 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [志伟 郭](https://appshunter.io/developer/1633168041) | [飞龙 杨](https://appshunter.io/developer/1686016407) |

## What reviewers say

### HMI云监控

[App page](https://appshunter.io/ios/app/hmi/id1634945850)

**Features:** macOS Compatibility

**In-app purchases:** none


### OmniCalc

[App page](https://appshunter.io/ios/app/omnicalc-calculator-and-notes/id6760615662)

This calculator app allows you to add notes to numbers and calculations, group related results for easy totaling, and keep projects separate. It features a searchable history and customizable appearance options for everyday math needs.

**Highlights:** Add notes to numbers and calculations, Total multiple results with one tap, Keep projects separate with calculation pages, Searchable and reusable calculation history, Live result previews and customizable appearance, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is HMI云监控 free?

HMI云监控 is free to download, with no in-app purchases.

### Is OmniCalc free?

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

### Do HMI云监控 or OmniCalc have ads?

Neither HMI云监控 nor OmniCalc shows ads.

### Which is updated more often, HMI云监控 or OmniCalc?

HMI云监控 ships an update every 35 months, and OmniCalc every 3 days. Most recently, HMI云监控 was updated on October 27, 2026 and OmniCalc on October 19, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*