JustFly.ing packs 40+ aviation calculators — crosswind, weight & balance, fuel planning, IFR approach math, and more — into one searchable toolkit, plus a currency & airworthiness tracker and a §91.205/KOEL dispatch reference. Built for single-engine piston pilots who want fast, trustworthy numbers on the ramp and in the pattern.
No spam — one email when JustFly.ing hits the App Store.
Run the numbers first — then lean on currency tracking and a dispatch reference to round out your preflight, all without switching between three different apps and a paper checklist.
Searchable, categorized, and fast — crosswind, density altitude, weight & balance, fuel planning, IFR approach math, and more, all in a consistent input/result layout.
GO / CAUTION / UNKNOWN status lamps track pilot currency and aircraft airworthiness side by side, so you know what's expiring before it becomes a problem.
A Part 61/91/135 dispatch reference that adapts to your flight scenario — day/night, IFR, high-performance, Part 135 — and tracks required-equipment attestations against your aircraft's KOEL.
Organized into seven categories so you can find the right tool in a tap, not a search.
Crosswind Component · Density Altitude / ISA · Wind Correction Angle · Cloud Base & Humidity · Freezing Level · VFR Weather Minima
Weight & Balance · Fuel Required · Fuel Endurance & Range · Fuel Uplift Cost · Time-Speed-Distance · ETP / PNR · Magnetic Wind Triangle · Required Fuel Reserve
Takeoff Distance · Landing Distance · Top of Climb · Top of Descent · Climb Gradient · Runway Slope · Stall Speed & VA Adjustment · Obstacle Clearance · Contaminated Runway
Holding Pattern Entry · Turn Radius · DME Arc Lead Radial · VOR Radial Intercept · Cold Temperature Correction · VDP · Approach Category · Descent Gradient · Alternate Requirements
PAVE Risk Score · IMSAFE / Fatigue · Supplemental Oxygen Requirement
Calendar Inspection Due · 100-Hour Remaining · Oil TBO Remaining · VOR 24-Month Due
Temperature · Pressure · Distance & Speed · Fuel & Weight · Lat/Lon · MGRS · UTM · True Airspeed · Mach Number
JustFly.ing is built for educational, training, and general informational use. It is not a substitute for your Aircraft Flight Manual, Pilot's Operating Handbook, official aeronautical charts, NOTAMs, weather briefings, or ATC instructions — always verify figures against official, current sources.
No output from the app should ever be the sole basis for a go/no-go, airworthiness, currency, or weight-and-balance decision. That responsibility, and the exercise of independent judgment, stays with the pilot in command at all times.
The full Terms of Use & Disclaimer of Liability are presented in the app and must be accepted before use.
JustFly.ing will be free with no subscriptions. At launch, you'll be able to leave an optional tip from inside the app if it saves you time in the cockpit.
Optional, in-app, one-time — never required. No accounts, no subscriptions, no ads.
JustFly.ing is still in development. Leave your email and we'll send one message the day it lands on the App Store.