# calculator HD⁻ vs 嘟嘟司机

The clearest difference is in-app purchases: 嘟嘟司机 at none against calculator HD⁻'s 6. 嘟嘟司机 also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. calculator HD⁻ sells 6 in-app purchases, starting at $2.99 per 3 months. 嘟嘟司机 asks for nothing beyond the download.

calculator HD⁻ ships an update every 3 months, 嘟嘟司机 every 2 months. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | calculator HD⁻ | 嘟嘟司机 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.5K ratings)](https://appshunter.io/ios/app/calculator-hd/id1485888099/reviews)** | — |
| Number of ratings | **2.5K** | — |
| Positive reviews | 61.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 98 MB | 32 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Beijing four time ledo Technology Co., Ltd.](https://appshunter.io/developer/1485888098) | [Mortree Online Groceries Delivery Inc](https://appshunter.io/developer/1565399115) |

## What reviewers say

### calculator HD⁻

[App page](https://appshunter.io/ios/app/calculator-hd/id1485888099)

A powerful and intuitive calculator app designed for simplicity and beauty. It offers a complete record of operations that can be reviewed and edited, along with scientific functions and multiple themes. Enjoy enhanced functionality with an optional subscription.

**Highlights:** Records operation process, Check and edit operations, Elegant and intuitive interface, Displays equation and result simultaneously, Supports scientific functions, Multiple themes

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| auto season vip | $2.99 | per 3 months |
| 连续年会员 | $3.99 | per year |
| 深色主题 | $0.99 | one-time |
| 周会员 | $0.99 | one-time |
| 高级会员 | $14.99 | one-time |
| 超级会员 | $14.99 | one-time |

**What reviewers like**

- 👍 Good calculator
- 🚀 Efficient calculations

**What reviewers complain about**

- 💰 Paid features
- 🔒 Locked to one device
- 🐛 Calculation errors
- 🙅‍♀️ Lack of functionality

**Reported bugs**

- Incorrect calculation results
- Compatibility issues with new devices

**Requested features**

- More customization options
- Improved user interface
- Free version without ads


### 嘟嘟司机

[App page](https://appshunter.io/ios/app/id6449782738)

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

**In-app purchases:** none


## Frequently asked questions

### Is calculator HD⁻ free?

calculator HD⁻ is free to download, with in-app purchases available.

### Is 嘟嘟司机 free?

嘟嘟司机 is free to download, with no in-app purchases.

### Do calculator HD⁻ or 嘟嘟司机 have ads?

calculator HD⁻ shows ads; 嘟嘟司机 does not.

### Which is updated more often, calculator HD⁻ or 嘟嘟司机?

calculator HD⁻ ships an update every 3 months, and 嘟嘟司机 every 2 months. Most recently, calculator HD⁻ was updated on October 25, 2026 and 嘟嘟司机 on October 15, 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.*