Cold Weather Ops vs FDPme
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cold Weather Ops
Provides pilots with quick access to critical flight information, including snowfall intensity, holdover times, runway conditions, and altimeter corrections. Simplifies complex calculations and reduces the need to consult extensive documentation.
- Snowfall intensity calculations
- Anti-icing holdover time access
- Runway condition information
- Altimeter corrections for cold conditions
- Holdover time expiration timer
- Runway cleared width calculator
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Cold Weather Ops is an app that gives simple and intuitive access to information that would otherwise require pilots to troll through pages and pages of documents, or make critical calculations based on tabulated information. The app includes:- Snowfall Intensity - Make 3 simple selections to find out the snowfall intensity for use in Holdover Time calculations. Holdover Times - A simple and intuitive interface to gain access to anti-icing holdover times, based on the current FAA Guidelines tables. The form builds in a logical sequence, with all notes (including restrictions, Lowest Operational Use Temperatures, condition descriptions, etc) appearing at the relevant points in the process - avoiding the need to have to troll through pages of documents. Once a holdover time has been generated, a timer is available to set a reminder for when the holdover time has expired. Runway Conditions - A tool to quickly gain information about generic Braking Action and Runway Condition Code associated with the various types of runway contaminants. A description of each condition is provided along with what can be expected with the different Braking Action levels. Also included is a simple calculator to work out the runway cleared width in metres, when given by ATC in feet (when required for reducing maximum crosswind figures). Holdover Data is updated each winter to reflect the latest FAA guidelines. Altimeter Corrections - By using the mathematical formula from ICAO Doc 8168, this tool provides accurate altimeter information for flying approaches in colder than standard conditions - removing the need to make calculations/interpolation of tabulated figures. Annual subscription required to use this app. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
FDPme
This aviation utility helps pilots calculate Flight Duty Period limits and plan long-haul operations. It offers tools for pre-flight preparation, including duty limit calculations, in-flight crew rest visualization, and quick time calculations.
- Flight Duty Period (FDP) limit calculation
- Crew rest planning with timeline visualization
- Pilot time calculation tools
- Long range reference table
- Aviation definitions glossary
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Flight Duty Period Calculator & Crew Rest Planner for Pilots FDPme is an aviation utility designed to help pilots quickly calculate Flight Duty Period (FDP) limits and plan long-haul operations. Built by a pilot, the app focuses on clarity, speed, and practical tools used during pre-flight preparation. Whether calculating duty limits, planning in-flight crew rest, or performing quick time calculations, FDPme provides a simple aviation-focused interface designed for real operational use. Middle East FTLs. Key Features Flight Duty Period Calculator Calculate FDP limits quickly with support for both acclimatised and non-acclimatised crew conditions. Crew Rest Planner Visualise in-flight rest breaks with a timeline showing takeoff, rest periods, and estimated arrival. Pilot Time Calculator Perform common aviation time calculations including adding, subtracting, multiplying, and dividing time values. Long Range Reference Table Quickly reference 2-crew long range limits. Aviation Definitions Built-in reference section explaining key terms used in flight duty and fatigue regulations. Disclaimer This application is provided for guidance purposes only and must not replace official company manuals or regulatory documentation. Always verify operational limits with your airline procedures and applicable regulations.
Screenshots
Verdict
Cold Weather Ops and FDPme both sit at 5.0 stars, but that hides the real split: 100% of FDPme's written reviews are positive against 33% of Cold Weather Ops's. FDPme also leads on in-app purchases (none vs 1) and update cadence (every 6 days vs every 3 months). Cold Weather Ops's advantage is price (Free vs $1.99). On rating, 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
Cold Weather Ops is free to download; FDPme costs $1.99 up front. Cold Weather Ops sells 1 in-app purchase, starting at $2.99 per year. FDPme asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Cold Weather Ops against 5.0 for FDPme. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews are what separate them: 33% of Cold Weather Ops's written reviews are positive against 100% of FDPme's.
Cold Weather Ops ships an update every 3 months, FDPme every 6 days. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.
| Parameter | Cold Weather Ops | FDPme |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 3 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Subscription | Paid — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 10 MB | 13 MB |
| Age rating | 4+ | 17+ |
| Developer | Adrian Patterson | Andrew Oakley |
Customer experience
Cold Weather Ops
FDPme
In-app purchases
Cold Weather Ops
- App access$2.991 Year
FDPme
No in-app purchases



