# 數學不求人 vs Jacfit Device

The clearest difference is ads: Jacfit Device at none against 數學不求人's shown. Jacfit Device also leads on update cadence (weekly vs every 6 weeks). 數學不求人's advantage is iOS requirement (13.0 vs 15.6). On price, 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.

數學不求人 ships an update every 6 weeks, Jacfit Device weekly. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 數學不求人 | Jacfit Device |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/jacfit-device/id6746643211/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 62 MB | 2 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Shih-Chieh Lin](https://appshunter.io/developer/1270187242) | [JSPORTS TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1453347979) |

## What reviewers say

### 數學不求人

[App page](https://appshunter.io/ios/app/id6746408810)

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

**In-app purchases:** none


### Jacfit Device

[App page](https://appshunter.io/ios/app/jacfit-device/id6746643211)

This application connects to specific devices to manage their firmware. It ensures your connected products are always running the latest software for optimal performance and a smooth user experience.

**Highlights:** Firmware updates, Device management, Performance optimization, User experience enhancement, Keep devices up to date

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

**In-app purchases:** none


## Frequently asked questions

### Is 數學不求人 free?

數學不求人 is free to download, with no in-app purchases.

### Is Jacfit Device free?

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

### Do 數學不求人 or Jacfit Device have ads?

數學不求人 shows ads; Jacfit Device does not.

### Which is updated more often, 數學不求人 or Jacfit Device?

數學不求人 ships an update every 6 weeks, and Jacfit Device weekly. Most recently, 數學不求人 was updated on November 8, 2026 and Jacfit Device on October 30, 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.*