# BluetoothLE RTK vs Field Master

The clearest difference is ads: BluetoothLE RTK at none against Field Master's shown. BluetoothLE RTK also leads on device support (3 vs 1) and iOS requirement (12.4 vs 17.0). Field Master's advantage is update cadence (every 5 days vs every 2 weeks). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BluetoothLE RTK ships an update every 2 weeks, Field Master every 5 days. The most recent releases landed on September 18, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | BluetoothLE RTK | Field Master |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Size | 13 MB | 13 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Navisys Technology Corp.](https://appshunter.io/developer/954176603) | [Bumjoon Lee](https://appshunter.io/developer/6801095554) |

## What reviewers say

### BluetoothLE RTK

[App page](https://appshunter.io/ios/app/bluetoothle-rtk/id1599429026)

**Features:** macOS Compatibility

**In-app purchases:** none


### Field Master

[App page](https://appshunter.io/ios/app/field-master-measure-and-level/id6802022573)

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

**In-app purchases:** none


## Frequently asked questions

### Is BluetoothLE RTK free?

BluetoothLE RTK is free to download, with no in-app purchases.

### Is Field Master free?

Field Master is free to download, with no in-app purchases.

### Do BluetoothLE RTK or Field Master have ads?

Field Master shows ads; BluetoothLE RTK does not.

### Which is updated more often, BluetoothLE RTK or Field Master?

BluetoothLE RTK ships an update every 2 weeks, and Field Master every 5 days. Most recently, BluetoothLE RTK was updated on September 18, 2026 and Field Master on October 29, 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.*