# RMNJ vs Ground Measure

The clearest difference is update cadence: Ground Measure at every 2 weeks against RMNJ's every 4 weeks. RMNJ's advantage is iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

RMNJ ships an update every 4 weeks, Ground Measure every 2 weeks. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | RMNJ | Ground Measure |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Size | 133 MB | 3 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lavatech Limited](https://appshunter.io/developer/728488344) | [Andrew Bushby](https://appshunter.io/developer/1858603704) |

## What reviewers say

### RMNJ

[App page](https://appshunter.io/ios/app/rmnj/id1455107782)

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

**In-app purchases:** none


### Ground Measure

[App page](https://appshunter.io/ios/app/ground-measure/id6756124337)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RMNJ free?

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

### Is Ground Measure free?

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

### Do RMNJ or Ground Measure have ads?

Neither RMNJ nor Ground Measure shows ads.

### Which is updated more often, RMNJ or Ground Measure?

RMNJ ships an update every 4 weeks, and Ground Measure every 2 weeks. Most recently, RMNJ was updated on November 2, 2026 and Ground Measure on October 28, 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.*