# GTRS Cloud vs 737 Tools · Annunciator Lights

The clearest difference is price: GTRS Cloud at Free against 737 Tools · Annunciator Lights's $9.99. GTRS Cloud also leads on update cadence (every 2 weeks vs monthly). 737 Tools · Annunciator Lights's advantage is iOS requirement (13.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

GTRS Cloud is free to download; 737 Tools · Annunciator Lights costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GTRS Cloud ships an update every 2 weeks, 737 Tools · Annunciator Lights monthly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | GTRS Cloud | 737 Tools · Annunciator Lights |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Size | 262 MB | 36 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [mooer](https://appshunter.io/developer/1384361853) | [Adria Raventos ruiz](https://appshunter.io/developer/1876663356) |

## What reviewers say

### GTRS Cloud

[App page](https://appshunter.io/ios/app/gtrs-cloud/id6780415337)

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

**In-app purchases:** none


### 737 Tools · Annunciator Lights

[App page](https://appshunter.io/ios/app/737-tools-annunciator-lights/id6794879293)

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

**In-app purchases:** none


## Frequently asked questions

### Is GTRS Cloud free?

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

### Is 737 Tools · Annunciator Lights free?

737 Tools · Annunciator Lights costs $9.99, with no in-app purchases.

### Do GTRS Cloud or 737 Tools · Annunciator Lights have ads?

Neither GTRS Cloud nor 737 Tools · Annunciator Lights shows ads.

### Which is updated more often, GTRS Cloud or 737 Tools · Annunciator Lights?

GTRS Cloud ships an update every 2 weeks, and 737 Tools · Annunciator Lights monthly. Most recently, GTRS Cloud was updated on October 24, 2026 and 737 Tools · Annunciator Lights 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.*