# Grid Locator Calculator vs RUMlogNG2Go

The clearest difference is price: Grid Locator Calculator at Free against RUMlogNG2Go's $4.99. Grid Locator Calculator also leads on review sentiment (100% vs 74%) and iOS requirement (10.0 vs 17.6). RUMlogNG2Go's advantage is update cadence (every 4 weeks vs every 4 months). On ads, in-app purchases and device support there is nothing between them.

Grid Locator Calculator is free to download; RUMlogNG2Go costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Grid Locator Calculator ships an update every 4 months, RUMlogNG2Go every 4 weeks. The most recent releases landed on October 22, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Grid Locator Calculator | RUMlogNG2Go |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | — | **[4.7 (253 ratings)](https://appshunter.io/ios/app/rumlogng2go/id1005575164/reviews)** |
| Number of ratings | — | **253** |
| Positive reviews | **100.0% of reviews** | 73.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 weeks** |
| Monetization | **Free** | Paid |
| Size | 22 MB | 16 MB |
| Requires iOS | **10.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kazunori Watanabe](https://appshunter.io/developer/709465263) | [Thomas Lindner, DL2RUM](https://appshunter.io/developer/531394808) |

## What reviewers say

### Grid Locator Calculator

[App page](https://appshunter.io/ios/app/grid-locator-calculator/id714086890)

This app helps Amateur Radio operators quickly find their Maidenhead Grid Locator reference using their iPhone's GPS. It works offline and provides 10-digit locators, which can be truncated to 4 or 6 digits as needed. Ideal for portable operations in unfamiliar locations.

**Highlights:** Calculates 10-digit grid locators, Uses iPhone GPS, Offline functionality, Supports 4, 6, and 10-digit locators, Ideal for portable operations

**Features:** macOS Compatibility

**In-app purchases:** none


### RUMlogNG2Go

[App page](https://appshunter.io/ios/app/rumlogng2go/id1005575164)

This application serves as a contact logging tool for amateur radio enthusiasts. It allows users to manage their QSO logs, import and export data in ADIF format, and integrate with various online services for QSL confirmation and log uploads. Features include DXCC tracking, sunrise/sunset calculations, and DX cluster integration.

**Highlights:** Contact logging for amateur radio, ADIF file import and export, DXCC, heading, and distance calculations, eQSL and LoTW user identification, Integrated telnet DX cluster, Real-time Grayline Map, Transceiver data exchange

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

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and useful
- 🔗 Connects via Bluetooth (IC-705)
- ☁️ Cloud sync for logbook
- 🗂️ DX cluster integration
- 📱 Works on iPhone and iPad

**What reviewers complain about**

- 🐛 Date and time issues (UTC/Local)
- ❓ Configuration complexity
- 🚫 eQSL not working
- 🚫 DX-CLUSTER without function
- 🐛 Cannot download ADIF logs

**Reported bugs**

- Date and time (UTC) fields not functioning properly
- eQSL not working, incorrect password message
- DX-CLUSTER without function, no response from Sysop
- Will not download ADIF logs from onecloud
- Local Time and UTC mixed, data converted to UTC

**Requested features**

- Add K4D as rig option for TRX Control
- Add AMP KPA1500
- Add RT21-D Rotor Control
- Search logbook by first name or town
- Flash first name when adding call sign


## Frequently asked questions

### Is Grid Locator Calculator free?

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

### Is RUMlogNG2Go free?

RUMlogNG2Go costs $4.99, with no in-app purchases.

### Do Grid Locator Calculator or RUMlogNG2Go have ads?

Neither Grid Locator Calculator nor RUMlogNG2Go shows ads.

### Which is updated more often, Grid Locator Calculator or RUMlogNG2Go?

Grid Locator Calculator ships an update every 4 months, and RUMlogNG2Go every 4 weeks. Most recently, Grid Locator Calculator was updated on October 22, 2026 and RUMlogNG2Go on November 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*