Comparison

GRF Snowtam vs CrewRest+

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

GRF Snowtam

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
Read full description

Complete and Accurate GRF decoder (New format GRF - global reporting format) to decode RCAM. Complete and Accurate Snowtam decoder (old format - used in Russia). MOTNE Decoder (Old format for Runway Condition Code) Converter for U.S. Visibility SM/m table, and temperatures Altitude correction calculator for cold Temperatures enjoy!

About

CrewRest+

This app helps flight crew calculate rest and duty schedules for long-haul flights. It offers customizable scenarios, including airline-specific options, and allows users to adjust durations and share timelines. A free trial is available before a yearly subscription.

Highlights
  • Rest and duty scheduling calculator
  • Customizable rest period splits
  • Airline-specific scenario catalog
  • Adjustable duration settings
  • Timeline sharing as PNG
  • Breaks before rest/duty periods
Features
Read full description

CrewRest+ is an application designed for flight crew members, both cockpit and cabin crew, operating long-haul flights. It is a rest scheduling calculator (and duty-service scheduling for cabin crew) that provides a simple and efficient flight timeline, displaying the duration, start time, and end time of each rest and/or duty-service period based on the entered data. Several scenarios can be selected, such as splitting the total duration into 3 equal rest periods, or 4, or even 6. Some airline-specific scenarios have been requested by pilots and are also available in the scenario catalog: Cathay, Virgin, Swiss, and Air New Zealand options. Breaks between rest periods are defined by the user. For cabin crew, breaks before rest periods and before duty periods can be set differently. Once the timeline is displayed, durations can be adjusted according to the actual flight context (except for the airline-specific scenarios mentioned above). The timeline can also be shared as a PNG image with other crew members. The application is available on both iPhone and iPad. --- Note : The app includes a free trial allowing up to 5 timeline calculations, with full access to all features. After these 5 calculations have been used, continued access to the app and its features requires an auto-renewable annual subscription priced at $6.99 per year. Payment will be charged to your Apple ID account at confirmation of purchase. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current billing period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscription at any time in your App Store account settings under “Subscriptions“. This application uses Apple's standard Terms of Use (EULA) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

GRF Snowtam4 screens
CrewRest+4 screens

Verdict

The call

The clearest difference is price: CrewRest+ at Free against GRF Snowtam's $1.99. CrewRest+ also leads on rating (5.0 vs 1.0) and update cadence (every 9 days vs every 4 months). GRF Snowtam's advantage is in-app purchases (none vs 1) and iOS requirement (15.6 vs 17.6). On ratings volume, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

CrewRest+ is free to download; GRF Snowtam costs $1.99 up front. CrewRest+ sells 1 in-app purchase, starting at $6.99 per year. GRF Snowtam asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CrewRest+ holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

GRF Snowtam ships an update every 4 months, CrewRest+ every 9 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
GRF Snowtam versus CrewRest+: the parameters behind the verdict, then further details
ParameterGRF SnowtamCrewRest+
Price$1.99Free — better
Rating1.0 (1 ratings)5.0 (2 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings12 — better
Update frequencyEvery 4 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.6 — better17.6
Further details — not scored
Size9 MB14 MB
Age rating4+4+
DeveloperPedro IsidoroSerge Ostrowsky

Customer experience

GRF Snowtam

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

CrewRest+

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

GRF Snowtam

No in-app purchases

1 purchases

CrewRest+

Subscriptions1
  • Yearly subscription7 Days trial$6.991 Year

Questions

Is GRF Snowtam free?
GRF Snowtam costs $1.99, with no in-app purchases.
Is CrewRest+ free?
CrewRest+ is free to download, with in-app purchases available.
Which has better reviews, GRF Snowtam or CrewRest+?
CrewRest+ is rated higher. GRF Snowtam averages 1.0 out of 5 from 1 ratings, while CrewRest+ averages 5.0 from 2 ratings.
Do GRF Snowtam or CrewRest+ have ads?
Neither GRF Snowtam nor CrewRest+ shows ads.
Which is updated more often, GRF Snowtam or CrewRest+?
GRF Snowtam ships an update every 4 months, and CrewRest+ every 9 days. Most recently, GRF Snowtam was updated on November 3, 2026 and CrewRest+ on October 31, 2026.

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