Holdover Calculator vs MentalCrosswind

Holdover Calculator is a pre-departure decision tool for pilots facing winter operations. It returns the applicable anti-icing holdover or allowance time from FAA or Transport Canada published guidance, based on the actual weather, the de/anti-icing fluid applied, and your aircraft configuration. DESIGNED FOR iOS 26 Built for iOS 26 and its Liquid Glass interface. The pilot answers a sequence of focused questions; the app shows the matching table cell, the published range, and a continuously interpolated estimate within that range. KEY FEATURES • Holdover and allowance times from the current FAA Holdover Time Guidelines and Transport Canada HOT Guidelines — and if a correction is published mid-season, the app can pick up the new numbers on its own. Settings shows which set you are calculating with. • Live weather autofill via the NOAA Aviation Weather Center — closest METAR or any ICAO you search. • Manual entry always available when stations are out of range or you want to model conditions ahead. • All four fluid types (Type I through Type IV) with both generic-table and specific-brand selections. • Active Frost allowance and Ice Pellet allowance with a 90-minute takeoff-window tracker. • Chart Notes surfaced inline, with active conditions (cold-soaked wing, OAT thresholds, etc.) flagged so you see only the notes that matter right now. • App Estimated time — a continuous interpolation across OAT and precipitation intensity, shown alongside the FAA Recommended low end of every published range. • Countdown timer with Live Activity on the Lock Screen, with the wall-clock "Ends at" time always shown to the second. • Apple Watch companion for the crew member running the timer. • Cockpit Sync — share one running timer across the flight deck. Link two to four devices over a direct local connection; the captain approves every change. No account, no internet, no server. • On iPad and the open iPhone Duo, dock the holdover time and countdown beside your questions, on either side. • Readable on the ramp. Tap any advisory note — or any setting's description — to enlarge it in a comfortable card sized for reading-distance glasses. • Support & Feedback in one tap. Reach the developer from the menu with a note, a screenshot, and a summary of your session. No account required. • FAA or Transport Canada as the global default, with per-calculation overrides. • Local or Zulu time display; 12- or 24-hour clock. PRE-DEPARTURE DECISION ONLY This app is an advisor. The pilot in command remains solely responsible for verifying that the selected time is appropriate for the actual conditions, fluid, and aircraft at the moment of departure. Always cross-reference the current published holdover tables. DATA SOURCES • FAA Holdover Time Guidelines (current revision) • Transport Canada Holdover Time Guidelines (current revision) • NOAA Aviation Weather Center (aviationweather.gov) for live METAR observations SUBSCRIPTION Holdover Calculator is an auto-renewable annual subscription, with a free trial for new subscribers. Pricing is shown in the app before you subscribe. • Payment is charged to your Apple ID at confirmation of purchase. • The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. • Your account is charged for renewal within 24 hours before the period ends. • Manage or cancel anytime in your Apple ID account settings. • Any unused portion of a free trial is forfeited when you purchase a subscription. PRIVACY Location is requested only to identify the nearest weather station; your coordinates are sent solely to NOAA to run that query and are never stored or shared with us. No ads, no analytics, no tracking. Privacy Policy: https://kilolimallc.github.io/legal/holdover-calculator/privacy.html Terms of Use (EULA): https://kilolimallc.github.io/legal/holdover-calculator/terms.html Disclaimer: https://kilolimallc.github.io/legal/holdover-calculator/disclaimer.html

Mental Crosswind is a simple application for student pilot who struggle to quickly process in their head what a wind announcement from the tower means in term of cross wind. The app will generate random wind configuration for a given runway and announce it as a controller would. You can then practice in your head to visual and estimate the crosswind. You can then press the Display button to see the wind graphically and the numerical cross wind and direct wind component. Usage: - press the practice button to generate a wind announcement (make sure your volume and sound is on). Each press on practice will generate a new wind configuration. - press the wind check button to hear the announcement again for the same wind as previously announced - press display to see the wind graphically represented - if you selected an airport you can also press the refresh button In the setting page you can: - choose whether the app starts in practice mode (wind not displayed, but announced), Analysis mode (wind displayed) or last (start as it last exited) - choose wether the app should on start up use the wind from the METAR of a given airport or from the nearest airport (will required location when in use) Note this app is not intended and SHOULD NOT be used for flight planning, this is purely a training tool.