Wrist Dope vs Zero Considerations

A real ballistic calculator built for Apple Watch first — not a phone app's afterthought. It runs standalone on your wrist; the iPhone companion is a full app, synced. FREE TO DOWNLOAD The full calculator is free on iPhone and Apple Watch. Wrist Dope Pro — a one-time $39.99, no subscription — unlocks wind meters, Field Trueing, Match Mode, scanning, Siri, auto environmentals, live complications, printable range cards, and unlimited profiles — buy or restore on the watch. Accuracy is never gated. WHEN THE SHOT WON'T WAIT No time to thumb through a calculator. Raise your wrist, dial the range, read your hold. Send it. Glanceable and dial-driven, with real math underneath. A SERIOUS ENGINE, NOT A TOY - True point-mass solver with G1/G7 drag models - Coriolis, spin drift, aero jump, and incline compensation - Holds in MIL or MOA — plus velocity, energy, time of flight - Validated against published reference trajectories - Advanced Settings (Pro): switch each correction on or off LIVE FIRE Dial the range; the solution updates instantly. A color-coded arrow shows wind at a glance; multi-wind previews holds across wind speeds. The display stays awake on the gun. On the rifle, target angle and cant update your holds live. WIND METERS Connect a Kestrel or a WeatherFlow Tempest or WEATHERmeter from the iPhone or straight from the watch. Its wind, temperature, pressure and humidity flow into your holds. FIELD TRUEING Correct the solver to what your rifle actually did: true muzzle velocity from a chronograph or a group at distance, then BC on a transonic target. It checks your zero first and refuses ranges that can't tell you anything. MATCH MODE — STAGE CARD AND STAGE TIMER Build a match as stages and targets, then glance-read the active stage: every target's range and live-solved holds. Arm the par timer on the watch or iPhone and both count down together — the screen edge drains, and haptics, range beeps, or a spoken countdown call the time. Hunter stages: log each target as you find it, then engage in order. On iPhone, RO mode puts one big button in the RO's hand. Share a match as a file — the whole squad imports it. AIRGUN READY Eleven airgun calibers, .177 to .72, with pellet-real weights and BCs. SCOPE LEVEL — FREE ANTI-CANT A canted rifle misses wide at distance. Zero the level to your rifle and hold by ear — audio and haptic cues, eyes on target; a glow, ring, bars or footer shows level. Pro puts a live level behind Live Fire, the Range Card, and the Stage Card. HIT PROBABILITY AND THE ETHICAL SHOT Lock a target for a real first-round-hit percentage from your velocity SD, group size, and wind call, plus a terminal check for your game. HANDS-FREE WITH SIRI "Hey Siri, Dope for 250" speaks your hold — watch and iPhone. Wind and target by voice, too. POINT-AND-LOCK THE FIELD Aim downrange, tap to lock target; aim downwind, tap to lock wind — read on the shooter's clock face. RANGE CARD ON YOUR WRIST A full dope table — dial to scroll — plus seven watch-face complications: a mini range card, holds, target, density altitude, and active load. YOUR RIFLES, YOUR LOADS Build rifle and load profiles on the watch — no phone required. On iPhone, scan a factory ammo barcode and the load builds itself, or pick from a bullet catalog with factory BCs. Export a printable dope card; back up your library to a file you control. YOUR CONDITIONS, YOUR UNITS Pressure, temperature, altitude, humidity, and wind each toggle AUTO or MANUAL. Metric or imperial, synced across devices. PRIVATE BY DESIGN No accounts, no tracking, no third-party SDKs. Your profiles and readings stay on your device. Weather comes from Apple Weather on request. Built for hunters, PRS shooters, and airgunners who want a first-round-hit hold without unpacking a bag of gear. Runs on Apple Watch Series 4 and later. Wrist Dope is a calculation aid. Always verify your data and shoot safely, responsibly, and within the law.

A ballistics calculator that reads the paper. Photograph your shot group and Zero Considerations gives you the exact clicks your turret takes to move point of impact onto point of aim. Everything that measures and calculates runs on your phone, with no signal. Your firearms, loads, photos and results never leave your device. The one part that uses the internet is the optional weather fill, which sends an approximate location to a weather service and stores nothing. Leave it off and the app never touches the network. SIGHT IN FROM A PHOTO • Shoot your group, photograph the target, and the app finds the target and the holes, measures the group against your point of aim, and gives the exact click adjustments for your turret. • 1,219 optic entries carry the makers' own click values, so the same scope in MOA and in MIL gets the right answer. • Scale comes from a printed target with coded corners that also squares up camera tilt, or from a store-bought target the app recognizes. Type a known span for anything else. A manual fallback always works. • Sighting in indoors? Proxy zero works out where to print at 25 yards so you should be on paper at 100. The app calls a proxy zero a prediction, because that is what it is. • If it is not sure it has your target, it shows you the photo and asks. It will not print a confident call it cannot stand behind. BALLISTICS THAT MATCH YOUR RIFLE • Drop, wind and energy in MOA, MIL or clicks. • Temperature, pressure, humidity and wind fill in from your phone, or type them yourself. • A wind dial you drag to your call, with optional compass capture. • Point-blank range and maximum ordinate. • Zero and true: from a photographed group at a known distance, back out your true muzzle velocity so your dope matches what the rifle actually does. KNOW YOUR OPTIC BEFORE YOU SHOOT • 487 reticle patterns drawn to the makers' published subtension sheets wherever the maker publishes the numbers, to scale, so you can see your real holdovers — and where one never did, the app says so on the reticle. • A suggested zero distance for each reticle, based on your load. • A mount and riser calculator that works out true height over bore from your rail and mount, offset optics included. Bore sight it, then confirm the zero on paper. SET UP YOUR RIGS ONCE • Save firearms, optics, mounts, loads and lasers as setups you reuse. • 852 firearms and 512 factory loads built in, or add your own. • Device loadouts: primary optic, offset, laser and irons on one rifle, each with its own zero. WHAT IT COSTS • One purchase. No subscription, no ads, no analytics, no account. For education and lawful sporting use. Always verify your zero and dope on paper before relying on them.