# Calculator vs HD ERP

The clearest difference is in-app purchases: HD ERP at none against Calculator's 2. HD ERP also leads on update cadence (every 5 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Calculator sells 2 one-off in-app purchases. HD ERP asks for nothing beyond the download.

Calculator ships an update every 2 months, HD ERP every 5 days. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Calculator | HD ERP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.9K ratings)](https://appshunter.io/ios/app/calculator-mingcalc/id1596875771/reviews)** | — |
| Number of ratings | **1.9K** | — |
| Positive reviews | 70.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 68 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [杭州智慧小明科技有限公司](https://appshunter.io/developer/1631940625) | [建红 程](https://appshunter.io/developer/1781276160) |

## What reviewers say

### Calculator

[App page](https://appshunter.io/ios/app/calculator-mingcalc/id1596875771)

This utility app offers a streamlined and efficient calculator experience. It records your entire calculation history for easy retrieval and allows for personalized prompt tones and customizable themes. Ideal for iPad users seeking a simpler, faster calculation tool.

**Highlights:** Faster calculation speed, Complete calculation process recording, Customizable prompt tones, Built-in exquisite themes, Ideal for iPad

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One year VIP | $3.99 | one-time |
| Permanent VIP | $14.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Convenient and efficient
- 💡 Useful features
- 👍 Simple operation
- 👍 Colorful and visually appealing

**What reviewers complain about**

- 🐛 Issues with deleting the app
- 💰 Expensive paid version
- 🔒 Unclear about the paid subscription

**Reported bugs**

- Paid subscription not working as expected
- Compatibility issues with older devices

**Requested features**

- Add scientific calculation options
- Ability to save and export calculation history


### HD ERP

[App page](https://appshunter.io/ios/app/hd-erp/id6738633454)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calculator free?

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

### Is HD ERP free?

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

### Do Calculator or HD ERP have ads?

Neither Calculator nor HD ERP shows ads.

### Which is updated more often, Calculator or HD ERP?

Calculator ships an update every 2 months, and HD ERP every 5 days. Most recently, Calculator was updated on November 7, 2026 and HD ERP on November 8, 2026.

---

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