# RockCONNECT vs SubStandard

The clearest difference is update cadence: RockCONNECT at every 2 months against SubStandard's every 7 months. 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.

RockCONNECT ships an update every 2 months, SubStandard every 7 months. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | RockCONNECT | SubStandard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/substandard/id1513656520/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | — | Free |
| Size | 17 MB | 33 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ground Control Technologies UK Ltd](https://appshunter.io/developer/1774186724) | [iService Ottner Röck](https://appshunter.io/developer/1413717324) |

## What reviewers say

### RockCONNECT

[App page](https://appshunter.io/ios/app/rockconnect/id904965550)

**Features:** macOS Compatibility

**In-app purchases:** none


### SubStandard

[App page](https://appshunter.io/ios/app/substandard/id1513656520)

This aviation utility app simplifies applying cold temperature corrections for altitudes. It allows users to save frequently used altitude sets for rapid retrieval, enhancing efficiency in flight planning.

**Highlights:** Cold temperature corrections, Altitude set storage, Quick access to saved altitudes, Easy to use interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RockCONNECT free?

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

### Is SubStandard free?

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

### Do RockCONNECT or SubStandard have ads?

Neither RockCONNECT nor SubStandard shows ads.

### Which is updated more often, RockCONNECT or SubStandard?

RockCONNECT ships an update every 2 months, and SubStandard every 7 months. Most recently, RockCONNECT was updated on September 21, 2026 and SubStandard on September 9, 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.*