# QTH Grid Square Locator vs SmartMTR for FlexRadio

The clearest difference is in-app purchases: QTH Grid Square Locator at none against SmartMTR for FlexRadio's 1. QTH Grid Square Locator also leads on update cadence (daily vs every 5 weeks) and iOS requirement (18.0 vs 26.2). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. SmartMTR for FlexRadio sells 1 in-app purchase, starting at $2.99 per month. QTH Grid Square Locator asks for nothing beyond the download.

QTH Grid Square Locator ships an update daily, SmartMTR for FlexRadio every 5 weeks. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | QTH Grid Square Locator | SmartMTR for FlexRadio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/smartmtr-for-flexradio/id6758765008/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 3 MB |
| Requires iOS | **18.0** | 26.2 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Ugur Altinsoy](https://appshunter.io/developer/1721426307) | [Dariusz Socha](https://appshunter.io/developer/1084171708) |

## What reviewers say

### QTH Grid Square Locator

[App page](https://appshunter.io/ios/app/qth-grid-square-locator/id6738007254)

Calculate your Maidenhead grid locator accurately using your device's GPS. This tool is designed for amateur radio operators, offering real-time calculations and offline functionality for contests and DX communication.

**Highlights:** Real-time GPS location calculation, Maidenhead grid system support, Offline functionality, Interactive map view, Optimized for amateur radio

**Features:** macOS Compatibility

**In-app purchases:** none


### SmartMTR for FlexRadio

[App page](https://appshunter.io/ios/app/smartmtr-for-flexradio/id6758765008)

Transform your iOS device into a precise S-meter and control panel for FlexRadio transceivers. Monitor signal levels, adjust DSP filters, and control radio functions with intuitive gestures. Includes a demo mode for exploration.

**Highlights:** Precision S-meter with arc-band indicator, Dual-slice display for simultaneous monitoring, TX meters for RF Power, SWR, and Compression, Intuitive swipe gestures for radio control, Comprehensive DSP filter adjustments, Demo mode for exploration

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SmartMTR | $2.99 | per month |


## Frequently asked questions

### Is QTH Grid Square Locator free?

QTH Grid Square Locator is free to download, with no in-app purchases.

### Is SmartMTR for FlexRadio free?

SmartMTR for FlexRadio is free to download, with in-app purchases available.

### Do QTH Grid Square Locator or SmartMTR for FlexRadio have ads?

Neither QTH Grid Square Locator nor SmartMTR for FlexRadio shows ads.

### Which is updated more often, QTH Grid Square Locator or SmartMTR for FlexRadio?

QTH Grid Square Locator ships an update daily, and SmartMTR for FlexRadio every 5 weeks. Most recently, QTH Grid Square Locator was updated on October 24, 2026 and SmartMTR for FlexRadio on October 31, 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.*