# RadioEquations vs QTH Grid Square Locator

The clearest difference is in-app purchases: QTH Grid Square Locator at none against RadioEquations's 2. QTH Grid Square Locator also leads on update cadence (daily vs every 3 months). RadioEquations's advantage is iOS requirement (16.4 vs 18.0). On price, review sentiment, ads and monetization model there is nothing between them.

Both are free to download. RadioEquations sells 2 one-off in-app purchases. QTH Grid Square Locator asks for nothing beyond the download.

RadioEquations ships an update every 3 months, QTH Grid Square Locator daily. The most recent releases landed on September 15, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | RadioEquations | QTH Grid Square Locator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/radioequations/id6451230870/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Daily** |
| Monetization | Free | Free |
| Size | 9 MB | 3 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Robert J Sarvis Jr](https://appshunter.io/developer/1531648349) | [Ugur Altinsoy](https://appshunter.io/developer/1721426307) |

## What reviewers say

### RadioEquations

[App page](https://appshunter.io/ios/app/radioequations/id6451230870)

This utility app provides quick access to essential functions for radio telecommunications professionals. It includes helpful descriptions to ensure users understand each function, even if they are new to the field.

**Highlights:** Access to common radio telecommunications functions, Accompanying descriptions for comprehension, Designed for professionals in the field, Easy-to-use interface

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Advanced Functions | $0.99 | one-time |
| Unlock AC Functions | $0.99 | one-time |


### 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


## Frequently asked questions

### Is RadioEquations free?

RadioEquations is free to download, with in-app purchases available.

### Is QTH Grid Square Locator free?

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

### Do RadioEquations or QTH Grid Square Locator have ads?

Neither RadioEquations nor QTH Grid Square Locator shows ads.

### Which is updated more often, RadioEquations or QTH Grid Square Locator?

RadioEquations ships an update every 3 months, and QTH Grid Square Locator daily. Most recently, RadioEquations was updated on September 15, 2026 and QTH Grid Square Locator on June 5, 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.*