# 百斗公交 vs RTK Helper

The clearest difference is price: 百斗公交 at Free against RTK Helper's $0.99. 百斗公交 also leads on iOS requirement (13.0 vs 17.6). RTK Helper's advantage is ads (none vs shown) and update cadence (every 3 days vs every 11 months). On in-app purchases and device support there is nothing between them.

百斗公交 is free to download; RTK Helper costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

百斗公交 ships an update every 11 months, RTK Helper every 3 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 百斗公交 | RTK Helper |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/rtk-helper/id6755748761/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Every 3 days** |
| Monetization | — | Paid |
| Size | 67 MB | 5 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [北京才牛图科技有限公司](https://appshunter.io/developer/1556885180) | [亦隆 朱](https://appshunter.io/developer/1855893826) |

## What reviewers say

### 百斗公交

[App page](https://appshunter.io/ios/app/id6504395865)

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

**In-app purchases:** none


### RTK Helper

[App page](https://appshunter.io/ios/app/rtk-helper/id6755748761)

This professional tool provides centimeter-level positioning accuracy for users requiring precise location data. It connects to RTK/GNSS receivers, offers NTRIP client functionality for real-time corrections, and displays detailed positioning information. Features include interest point and track recording, GPX export, and measurement tools.

**Highlights:** Bluetooth RTK/GNSS receiver connection, NTRIP client for differential correction data, Real-time positioning and accuracy display, Interest point and track recording, GPX export for compatibility, Distance and area measurement tools

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

**In-app purchases:** none


## Frequently asked questions

### Is 百斗公交 free?

百斗公交 is free to download, with no in-app purchases.

### Is RTK Helper free?

RTK Helper costs $0.99, with no in-app purchases.

### Do 百斗公交 or RTK Helper have ads?

百斗公交 shows ads; RTK Helper does not.

### Which is updated more often, 百斗公交 or RTK Helper?

百斗公交 ships an update every 11 months, and RTK Helper every 3 days. Most recently, 百斗公交 was updated on October 25, 2026 and RTK Helper on October 28, 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.*