# 博世SFE vs 汽修叮叮

The clearest difference is update cadence: 汽修叮叮 at fortnightly against 博世SFE's every 2 months. 汽修叮叮 also leads on iOS requirement (12.0 vs 15.6). 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.

博世SFE ships an update every 2 months, 汽修叮叮 fortnightly. The most recent releases landed on October 20, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 博世SFE | 汽修叮叮 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 54 MB | 65 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [rbts](https://appshunter.io/developer/1334576474) | [Wuxi Chetong Rail Technology Co., Ltd](https://appshunter.io/developer/1509398718) |

## What reviewers say

### 博世SFE

[App page](https://appshunter.io/ios/app/sfe/id1519942417)

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

**In-app purchases:** none


### 汽修叮叮

[App page](https://appshunter.io/ios/app/id1583684532)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 博世SFE free?

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

### Is 汽修叮叮 free?

汽修叮叮 is free to download, with no in-app purchases.

### Do 博世SFE or 汽修叮叮 have ads?

Neither 博世SFE nor 汽修叮叮 shows ads.

### Which is updated more often, 博世SFE or 汽修叮叮?

博世SFE ships an update every 2 months, and 汽修叮叮 fortnightly. Most recently, 博世SFE was updated on October 20, 2026 and 汽修叮叮 on October 14, 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.*