Make your call
A short daily deck of claims you've heard about flying. Judge each one in a swipe.
→ Believe
← Doubt
↑ Needs proof
↓ Skip
For nervous flyers
iPhone · Free
Judge the claim,
not the fear.
Every day you get a short deck of claims about flying. Swipe to believe, doubt or ask for proof — then see the evidence, and find out where you and the facts part ways.
TurbulenceTakeoff & LandingEngines & MechanicsWeatherSounds & SensationsPilots & CrewAircraft Age & AirlinesStatistics & Odds
How it works
Four steps from
Four steps from
gut feeling to evidence.
See the evidence
After each call the card opens its hidden values: how strongly physics, rules and data back it — and whether it flatters calm or fear.
Find the double standards
Your calls become a bias map and a blind-spot check against how calm you said you are.
Fly & compare
Log your real flights and see what each one did to your fear skew — before and after.
Try a card
Five real cards
Five real cards
from the deck.
Make your call on each claim — tap a button, drag the card, or use your arrow keys. The reveal shows what the evidence says and whether your call fell into a double standard.
In the app there are 120 claim cards like these, plus estimate cards that ask you to guess a number — like how far an airliner can glide with no engines.
Sample boarding
Swipe the card or press ← ↑ →
What the evidence says
Evidence Strength
WeakStrong
Fear Lean
Flatters calmFlatters fear
Inside the app
Five tabs. One honest mirror.
Whiteknuckle doesn't tell you to relax. It shows you, call by call, where your fear is doing the judging.
Daily Boarding
A fresh deck every day — 5, 10 or 15 cards, balanced between scary and calming claims. Keep your streak; skipped cards come back in three days.
Bias Map
Every call lands on a map of evidence strength against fear lean. Mismatches get flagged as one of four patterns: fear-confirming, reassurance-dismissing, comfort-seeking or denial.
Calm & Strong
Scary & Strong
Calm & Weak
Scary & Weak
Blind Spot
Declare how calm a flyer you are and what you brace for. The app holds you to it — your declared profile versus the one your calls reveal.
Logbook
Log real flights, rough patches and how each felt. A drift chart shows your fear skew moving, with a before & after for every trip.
Source Desk
Heard something from a friend, the news or a forum? Turn it into your own card, rate it, and give it a second reading later with your first ratings hidden.
Estimate cards
Every fifth card asks for a number. The estimate ladder shows whether you overestimate danger — and by how much.
Honest sources
Each claim names its source type — physics, certification rule, statistics, procedure or anecdote — so you learn which kind of evidence to trust.
Stays on your phone
Your calls, declarations and flights live on your device. No account, nothing stored anywhere else.
Your fear skew
Where do your calls land?
Denial Zone
Your calls wave away strong scary claims and accept weak calm ones.
Calibrated
Your fear and your doubt land close to where the evidence sits.
Fear-tilted
You give weak scary claims more credit than the evidence does.
White-knuckle
Fear is steering most of your calls; the evidence rarely gets a vote.
Loosen your grip
Climb the ladder, call by call.
Level 1 · 0+ calls
Whiteknuckle
Where everyone starts.
Level 2 · 50+ calls
Loosened Grip
The patterns start to show.
Level 3 · 150+ calls
Steady Hands
Evidence gets a real vote.
Level 4 · 350+ calls
Armrest Free
Top of the ladder.
Contact
Questions, ideas,
Questions, ideas,
a claim we missed?
Write to us at inbox@kinsona.site or use the form. Suggestions for new cards are always welcome.
Is Whiteknuckle therapy?
No. It's a self-reflection tool that checks your gut calls against the evidence. If fear of flying seriously affects your life, please talk to a qualified professional.
Do I need an account?
No. Everything stays on your iPhone — there's no sign-up and nothing is stored anywhere else.
How long does a boarding take?
A few minutes. Choose 5, 10 or 15 cards a day in Settings, and add extra decks whenever you like.
Start boarding.
Your next flight will still have bumps. You'll just know which fears the evidence backs — and which ones it doesn't.
Download on theApp Store
Free · iPhone