# 车工计算器助手 vs 豆子同学

The clearest difference is price: 豆子同学 at Free against 车工计算器助手's $1.99. 豆子同学 also leads on update cadence (every 6 days vs every 2 months) and iOS requirement (13.0 vs 15.6). 车工计算器助手's advantage is in-app purchases (none vs 9). On ads and device support there is nothing between them.

豆子同学 is free to download; 车工计算器助手 costs $1.99 up front. 豆子同学 sells 9 one-off in-app purchases. 车工计算器助手 asks for nothing beyond the download.

车工计算器助手 ships an update every 2 months, 豆子同学 every 6 days. The most recent releases landed on September 22, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | 车工计算器助手 | 豆子同学 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Paid | — |
| Size | 9 MB | 229 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [小燕 陈](https://appshunter.io/developer/1462872555) | [北京豆神智睿网络科技有限公司](https://appshunter.io/developer/1822717280) |

## What reviewers say

### 车工计算器助手

[App page](https://appshunter.io/ios/app/id6761551237)

This app assists machinists with complex calculations for CNC programming, including thread libraries, macro programs, and taper calculations. It also provides tools for geometry, material weight, and G/M code lookups to streamline the machining process.

**Highlights:** Cut point coordinate calculation, Thread library and calculation, Macro program generation, Taper calculation, Tolerance and fit query, Material weight calculation, G/M code lookup

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

**In-app purchases:** none


### 豆子同学

[App page](https://appshunter.io/ios/app/id6779469983)

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1豆点 | $0.99 | one-time |
| 6豆点 | $0.99 | one-time |
| 12豆点 | $1.99 | one-time |
| 24豆点 | $2.99 | one-time |
| 50豆点 | $6.99 | one-time |
| 99豆点 | $14.99 | one-time |
| 200豆点 | $29.99 | one-time |
| 500豆点 | $69.99 | one-time |
| 1499豆点 | $199.99 | one-time |


## Frequently asked questions

### Is 车工计算器助手 free?

车工计算器助手 costs $1.99, with no in-app purchases.

### Is 豆子同学 free?

豆子同学 is free to download, with in-app purchases available.

### Do 车工计算器助手 or 豆子同学 have ads?

Neither 车工计算器助手 nor 豆子同学 shows ads.

### Which is updated more often, 车工计算器助手 or 豆子同学?

车工计算器助手 ships an update every 2 months, and 豆子同学 every 6 days. Most recently, 车工计算器助手 was updated on September 22, 2026 and 豆子同学 on September 18, 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.*