# Aviation Tools vs GRF Snowtam

The clearest difference is review sentiment: Aviation Tools at 50% against GRF Snowtam's 0%. Aviation Tools also leads on iOS requirement (13.0 vs 15.6). GRF Snowtam's advantage is update cadence (every 4 months vs every 33 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Aviation Tools costs $1.99 and GRF Snowtam $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Aviation Tools ships an update every 33 months, GRF Snowtam every 4 months. The most recent releases landed on October 12, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Aviation Tools | GRF Snowtam |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/grf-snowtam/id1514590590/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Size | 22 MB | 9 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jorge Gonzalez Galvan](https://appshunter.io/developer/915982572) | [Pedro Isidoro](https://appshunter.io/developer/1506809339) |

## What reviewers say

### Aviation Tools

[App page](https://appshunter.io/ios/app/aviation-tools/id1271017562)

This app consolidates essential aviation tools for pilots, including time calculators, unit converters, and extensive databases of Jeppesen and FAA abbreviations, definitions, and NOTAMs. It also features a wind correction calculator for landing performance.

**Highlights:** Time Calculator for logbooks and flight times, Unit Converter for aviation standards, Jeppesen Symbols and Definitions database, Extensive FAA and ICAO Abbreviations, NOTAMs database, Wind Correction Calculator

**Features:** macOS Compatibility

**In-app purchases:** none


### GRF Snowtam

[App page](https://appshunter.io/ios/app/grf-snowtam/id1514590590)

Decode aviation weather reports with this tool. It handles Global Reporting Format (GRF) and older Snowtam formats, converts visibility and temperature units, and calculates altitude corrections for cold weather.

**Highlights:** GRF decoder, Snowtam decoder, MOTNE decoder, Visibility converter, Temperature converter, Altitude correction calculator

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Aviation Tools free?

Aviation Tools costs $1.99, with no in-app purchases.

### Is GRF Snowtam free?

GRF Snowtam costs $1.99, with no in-app purchases.

### Do Aviation Tools or GRF Snowtam have ads?

Neither Aviation Tools nor GRF Snowtam shows ads.

### Which is updated more often, Aviation Tools or GRF Snowtam?

Aviation Tools ships an update every 33 months, and GRF Snowtam every 4 months. Most recently, Aviation Tools was updated on October 12, 2026 and GRF Snowtam on October 25, 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.*