# Grid vs RTKapp

The clearest difference is price: RTKapp at Free against Grid's $0.99. RTKapp also leads on rating (5.0 vs 3.7) and update cadence (every 3 weeks vs every 5 months). Grid's advantage is ratings volume (3 vs 1) and iOS requirement (9.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

RTKapp is free to download; Grid costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RTKapp holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Grid ships an update every 5 months, RTKapp every 3 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Grid | RTKapp |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/grid-nav/id1245973518/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rtkapp/id6759115701/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 16 MB | 93 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Matt Kaili](https://appshunter.io/developer/398449850) | [Juan Carlos Lopez Calvo](https://appshunter.io/developer/1876960144) |

## What reviewers say

### Grid

[App page](https://appshunter.io/ios/app/grid-nav/id1245973518)

This app provides accurate location data in MGRS/USNG and lat/lon formats, along with altitude, course, and speed. It features a satellite map, a coordinate converter, and options to adjust grid accuracy and units. Location updates can be toggled to conserve battery.

**Highlights:** MGRS/USNG and lat/lon coordinates, Altitude, course, and speed display, Satellite map view, Coordinate converter (DMS, MGRS, UTM), Adjustable grid accuracy, Toggleable location updates

**Features:** macOS Compatibility

**In-app purchases:** none


### RTKapp

[App page](https://appshunter.io/ios/app/rtkapp/id6759115701)

Achieve centimeter-level GNSS precision directly on your mobile device. Connect receivers, process raw data in real-time or post-processing, and analyze results with advanced plotting tools. This app offers professional surveying workflows without the need for desktop software, prioritizing local data processing and privacy.

**Highlights:** Real-time RTK positioning, Post-processing (PPK/PPP), NTRIP Client and Caster Management, Raw data logging and RINEX conversion, Live quality metrics and skyplot, Analytical plotting tools

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Grid free?

Grid costs $0.99, with no in-app purchases.

### Is RTKapp free?

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

### Which has better reviews, Grid or RTKapp?

RTKapp is rated higher. Grid averages 3.7 out of 5 from 3 ratings, while RTKapp averages 5.0 from 1 ratings.

### Do Grid or RTKapp have ads?

Neither Grid nor RTKapp shows ads.

### Which is updated more often, Grid or RTKapp?

Grid ships an update every 5 months, and RTKapp every 3 weeks. Most recently, Grid was updated on November 6, 2026 and RTKapp on October 31, 2026.

---

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